iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM D6143-05

(Test Method)

Standard Test Method for Iron Content of Bisphenol A (4,4´ - Isopropylidenediphenol)

Standard Test Method for Iron Content of Bisphenol A (4,4´ - Isopropylidenediphenol)

SIGNIFICANCE AND USE
Iron may increase the color of bisphenol A and affect other properties of end-use products.
High purity bisphenol A typically has less than 1 mg/kg of iron.
SCOPE
1.1 This test method covers the procedure to determine the iron content of bisphenol A (4,4´-isopropylidenediphenol).
1.2 This test method has a lower detection limit of 0.1 mg/kg, and an upper limit of 10 mg/kg of iron in bisphenol A. If the iron content is higher, it may be necessary to dilute the sample. A longer path length cell can also be used for better accuracy at lower Fe levels, as well as calibration within the range expected (for example, 0 to 1 mg/kg versus 0 to 10 mg/kg for samples expected to be in the 0 to 1 mg/kg range.
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E 29.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limits prior to use. For a specific hazard statement, see Section 8.

General Information

Status
Historical
Publication Date
30-Jun-2005
ICS
71.040.40 - Chemical analysis
Technical Committee
D16 - Aromatic, Industrial, Specialty and Related Chemicals
Drafting Committee
D16.02 - Oxygenated Aromatics
Current Stage
Ref Project

Relations

Replaces
ASTM D6143-97 - Standard Test Method for Iron Content of Bisphenol A (4,4&#180 - Isopropylidenediphenol)
Effective Date
01-Jul-2005
Replaced By
ASTM D6143-09 - Standard Test Method for Iron Content of Bisphenol A (4,4´ - Isopropylidenediphenol)
Effective Date
01-Dec-2009
Referred By
ASTM E1615-22 - Standard Test Method for Determination of Trace Quantities of Iron by Visible Spectrophotometry
Effective Date
01-Jul-2005

Buy Standard

ASTM D6143-05 - Standard Test Method for Iron Content of Bisphenol A (4,4´ - Isopropylidenediphenol)ASTM D6143-05 - Standard Test Method for Iron Content of Bisphenol A (4,4´ - Isopropylidenediphenol)
PreviousNext
Standard
ASTM D6143-05 - Standard Test Method for Iron Content of Bisphenol A (4,4´ - Isopropylidenediphenol)
English language
3 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D6143 – 05
Standard Test Method for
1
Iron Content of Bisphenol A (4,4* - Isopropylidenediphenol)
This standard is issued under the fixed designation D6143; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Determine the Precision of a Test Method
2.2 Other Documents:
1.1 This test method covers the procedure to determine the
OSHA Regulations 29CFR paragraphs 1910.1000 and
iron content of bisphenol A (4,48-isopropylidenediphenol).
3
1910.1200.
1.2 This test method has a lower detection limit of 0.1
mg/kg, and an upper limit of 10 mg/kg of iron in bisphenolA.
3. Summary of Test Method
If the iron content is higher, it may be necessary to dilute the
3.1 Bisphenol A is dissolved in methanol, then treated with
sample. A longer path length cell can also be used for better
hydroxylaminehydrochloridetoconvertanyferricironpresent
accuracy at lower Fe levels, as well as calibration within the
to ferrous iron. The ferrous iron is then complexed with
range expected (for example, 0 to 1 mg/kg versus 0 to 10
FerroZine to form a purple/maroon chromophore that is
mg/kg for samples expected to be in the 0 to 1 mg/kg range.
quantified by visible spectrophotometry at 560 nm.
1.3 In determining the conformance of the test results using
this method to applicable specifications, results shall be
4. Significance and Use
rounded off in accordance with the rounding-off method of
4.1 Iron may increase the color of bisphenol A and affect
Practice E29.
other properties of end-use products.
1.4 The values stated in SI units are to be regarded as
4.2 High purity bisphenolAtypically has less than 1 mg/kg
standard. No other units of measurement are included in this
of iron.
standard.
1.5 This standard does not purport to address all of the
5. Interferences
safety concerns, if any, associated with its use. It is the
5.1 No direct interferences have been observed in the use of
responsibility of the user of this standard to establish appro-
this method.
priate safety and health practices and determine the applica-
bility of regulatory limits prior to use. For a specific hazard
6. Apparatus
statement, see Section 8.
6.1 Visible Spectrophotometer, capable of measuring absor-
bance at 560 nm.
2. Referenced Documents
6.2 Analytical Balance, capable of weighing 100 g to the
2
2.1 ASTM Standards:
nearest 0.01 g.
D1193 Specification for Reagent Water
6.3 Glassware, 100 mL and 1 L volumetric flasks, 500 mL
D4297 Practice for Sampling and Handling Bisphenol A
graduated cylinders, 10 mL volumetric pipettes, 1 cm square
(4,48 -Isopropylidinediphenol)
quartz cuvettes.
D6809 Guide for Quality Control and Quality Assurance
6.4 All Glassware used in this test method should be
Procedures for Aromatic Hydrocarbons and Related Ma-
dedicated and thoroughly cleaned prior to use.
terials
E29 Practice for Using Significant Digits in Test Data to
7. Reagents and Materials
Determine Conformance with Specifications
7.1 Methanol, ACS reagent grade,$ 99.8 % purity.
E691 Practice for Conducting an Interlaboratory Study to
7.2 Sodium Acetate, pH 5.5.
7.2.1 This solution may be prepared by dissolving 272.0 g
1
6 0.1g of reagent grade sodium acetate in 1000 mL distilled
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
water and adjusting to pH 5.5 with concentrated hydrochloric
D16.02 on Oxygenated Aromatics.
acid.
Current edition approved July 1, 2005. Published July 2005. Originally approved
7.3 Distilled Water, conforming to Type IV of Specification
in 1997. Last previous edition approved in 1997 as D6143 – 97. DOI: 10.1520/
D6143-05. D1193.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
the ASTM website. 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6143 – 05
TABLE 1 Summary of Precision Data
7.4 Standard Iron Solution, Titrisol, 100 mg/L (ca. 98
mg/kg) iron chloride in 15 % hydrochloric acid or equivalent. Precision, characterized by repeatability, Sr, r,
and reproducibility, SR, R for analysis of Fe in BPA
7.5 Sodium Hydroxide, 0.5 normal, ACS
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM D5808-23(Test Method)
Standard Test Method for Determining Chloride in Aromatic Hydrocarbons and Related Chemicals by Microcoulometry

SIGNIFICANCE AND USE
5.1 Organic as well as inorganic chlorine compounds can prove harmful to equipment and reactions in processes involving hydrocarbons.  
5.2 Maximum chloride levels are often specified for process streams and for hydrocarbon products.  
5.3 Organic chloride species are potentially damaging to refinery processes. Hydrochloric acid can be produced in hydrotreating or reforming reactors and this acid accumulates in condensing regions of the refinery.
SCOPE
1.1 This test method covers the determination of organic chloride in aromatic hydrocarbons, their derivatives, and related chemicals.  
1.2 This test method is applicable to samples with chloride concentrations to 25 mg/kg. The limit of detection (LOD) is 0.2 mg/kg and the limit of quantitation (LOQ) is 0.7 mg/kg. With careful analytical technique or the measurement of replicates, or both, this method can be used to successfully analyze concentrations below the LOD.
Note 1: The maximum is the highest concentration from the interlaboratory study and the LOD and LOQ were calculated from Performance Testing Program (PTP) data. See Table 1.  
1.3 This test method is preferred over Test Method D5194 for products, such as styrene, that are polymerized by the sodium biphenyl reagent.  
1.4 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.5 Organic chloride values of samples containing inorganic chlorides will be biased high due to partial recovery of inorganic species during combustion. Interference from inorganic species can be reduced by water washing the sample before analysis. This does not apply to water soluble samples.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see 7.3 and Section 9.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    5 pages
    English language
    sale 15% off
  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM E203-23(Test Method)
Standard Test Method for Water Using Volumetric Karl Fischer Titration

SIGNIFICANCE AND USE
4.1 Titration techniques using KF reagent are one of the most widely used for the determination of water.  
4.2 Although the volumetric KF titration can determine low levels of water, it is generally accepted that coulometric KF titrations (see Test Method E1064) are more accurate for routine determination of very low levels of water. As a general rule, if samples routinely contain water concentrations of 500 mg/kg or less, the coulometric technique should be considered.  
4.3 Applications can be subdivided into two sections: (1) organic and inorganic compounds, in which water may be determined directly, and (2) compounds, in which water cannot be determined directly, but in which interferences may be eliminated by suitable chemical reactions or modifications of the procedure. Further discussion of interferences is included in Section 5 and Appendix X2.  
4.4 Water can be determined directly in the presence of the following types of compounds:    
Organic Compounds  
Acetals  
Ethers  
Acids (Note 1)  
Halides  
Acyl halides  
Hydrocarbons (saturated and unsaturated)  
Alcohols  
Ketones, stable (Note 4)  
Aldehydes, stable (Note 2)  
Nitriles  
Amides  
Orthoesters  
Amines, weak (Note 3)  
Peroxides (hydro, dialkyl)  
Anhydrides  
Sulfides  
Disulfides  
Thiocyanates  
Esters  
Thioesters  
Inorganic Compounds  
Acids (Note 5)  
Cupric oxide  
Acid oxides (Note 6)  
Desiccants  
Aluminum oxides  
Hydrazine sulfate  
Anhydrides  
Salts of organic and inorganic acids (Note 6)  
Barium dioxide  
Calcium carbonate  
Note 1: Some acids, such as formic, acetic, and adipic acid, are slowly esterified. For high accuracy with pyridine-based reagents, use 30 % to 50 % pyridine in methanol as the solvent. When using pyridine-free reagents, commercially available buffer solutions can be added to the sample prior to titration. With formic acid, it may be necessary to use methanol-free solvents and titrants (1).4
N...
SCOPE
1.1 This test method is intended as a general guide for the application of the volumetric Karl Fischer (KF) titration for determining free water and water of hydration in most solid or liquid organic and inorganic compounds. This test method is designed for use with automatic titration systems capable of determining the KF titration end point potentiometrically; however, a manual titration method for determining the end point visually is included as Appendix X1. Samples that are gaseous at room temperature are not covered (see Appendix X4). This test method covers the use of both pyridine and pyridine-free KF reagents for determining water by the volumetric titration. Determination of water using KF coulometric titration is not discussed. By proper choice of the sample size, KF reagent concentration and apparatus, this test method is suitable for measurement of water over a wide concentration range, that is, parts per million to pure water.  
1.2 The values stated in SI units are to be regarded as standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific warnings are given in 3.1 and 7.3.3.  
1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, and safety precautions for chemicals used in this test procedure.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    10 pages
    English language
    sale 15% off
  • Standard
    10 pages
    English language
    sale 15% off
ASTM
ASTM E1899-23(Test Method)
Standard Test Method for Hydroxyl Groups Using Reaction with p-Toluenesulfonyl Isocyanate (TSI) and Potentiometric Titration with Tetrabutylammonium Hydroxide

SIGNIFICANCE AND USE
5.1 Hydroxyl is an important functional group and knowledge of its content is required in many intermediate and end use applications. This test method is for the determination of primary and secondary hydroxyl groups and can be used for the assay of compounds containing them.  
5.2 This test method has the following advantages over other hydroxyl number methods: It is rapid (10 min), pyridine-free, ambient temperature, small sample size, applicable to extremely low hydroxyl numbers (
SCOPE
1.1 This test method covers the determination of hydroxyl groups attached to primary and secondary carbon atoms in aliphatic and cyclic compounds and phenols from 0.5 to 367 hydroxyl number. It is not suitable for determination of hydroxyl groups attached to tertiary carbon atoms. This test method is applicable to polyacetals, temperature sensitive materials, high solids polymer polyols, and rigid polyols. Other available test methods listed in Note 1 are not suitable for many of the sample types listed above.  
1.1.1 This test method is currently recommended for neutral refined products. Successful application has been made, however, to some in-process samples that contain an excess of acidic species. Proper validation must be performed, of course, to show that the acidic species either does not interfere, or that the acidic species interference has been obviated.
Note 1: Other methods for determination of hydroxyl groups are given in Test Methods D817, D871, D4252, D4273, D4274, E222, E326, and E335.  
1.2 The Limit of Detection (LOD) is 0.18 units and the Limit of Quantitation (LOQ) is 0.59 units. Unit = hydroxyl number (OH#).
Note 2: LOD and LOQ were calculated using Standard deviations from 14.1.2.1.  
1.3 Review the current appropriate Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, and safety precautions.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 The following applies for the purposes of determining the conformance of the test results using this test method to applicable specifications. Results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated, with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazards see Section 9.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    6 pages
    English language
    sale 15% off
  • Standard
    6 pages
    English language
    sale 15% off
ASTM
ASTM D6143-23(Test Method)
Standard Test Method for Iron Content of Bisphenol A (4,4′ - Isopropylidenediphenol)

SIGNIFICANCE AND USE
5.1 Iron may increase the color of bisphenol A and affect other properties of end-use products.  
5.2 High purity bisphenol A typically has less than 1 mg/kg of iron.
SCOPE
1.1 This test method covers the determination of the iron content of bisphenol A (4,4′-isopropylidenediphenol).  
1.2 This test method has a lower detection limit of 0.1 mg/kg, and an upper limit of 10 mg/kg of iron in bisphenol A. If the iron (Fe) content is higher, it may be necessary to dilute the sample. A longer path length cell can also be used for better accuracy at lower Fe levels, as well as calibration within the range expected (for example, 0 mg/kg to 1 mg/kg versus 0 mg/kg to 10 mg/kg for samples expected to be in the 0 mg/kg to 1 mg/kg range.  
1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limits prior to use.  For a specific hazard statement, see Section 9.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    5 pages
    English language
    sale 15% off
  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM E222-23(Test Method)
Standard Test Methods for Hydroxyl Groups Using Acetic Anhydride Acetylation

SIGNIFICANCE AND USE
4.1 Hydroxyl is an important functional group, and knowledge of its content is required in many intermediate and end use applications. The test methods described herein are for the determination of primary and secondary hydroxyl groups and can be used for the assay of compounds containing them.
SCOPE
1.1 These test methods cover the determination of hydroxyl groups attached to primary and secondary carbon atoms in aliphatic and alicyclic compounds and phenols.  
1.2 Three test methods are given as follows:    
Sections  
Test Method A (Pressure Bottle Method)  
8 – 14    
Test Method B (Reflux Method)  
16 – 22    
Test Method C (Perchloric Acid Catalyzed Method)  
24 – 30  
1.2.1 Test Method A is recommended for general use. Test Method B is included to give a standard procedure for the method that has been used widely. Test Method C is recommended when the results are required in a minimum period of time or where ambient temperature for the reaction is desired.  
1.2.2 The results obtained using Test Methods A and B will be essentially the same, but the results obtained using Test Method C will be higher (up to approximately 4 % relative) than those obtained using the other two methods.  
1.2.3 Statements on precision are included with each test method. The precision of Test Methods A and C is consistent over a wide range of hydroxyl content (tested over hydroxyl number range of 250 to 1600), whereas Test Method B is less precise at the higher hydroxyl content level than it is at the lower hydroxyl content level. In general, Test Method A is approximately two-fold as precise as Test Method C. Test Method B has approximately the same precision as Test Method C at the lower hydroxyl content level but poorer precision at the higher hydroxyl content level.  
1.2.4 The interferences are essentially the same for the three methods. Some compounds can be analyzed using Test Methods A or B but not using Test Method C because of interfering reactions of the strong acid catalyst with the compound being analyzed or the acetate product formed in the determination. However, because of its increased reactivity, Test Method C is applicable for determination of some compounds, particularly sterically hindered secondary alcohols, which react too slowly or not at all in Test Methods A and B.
Note 1: Other methods for determination of hydroxyl groups are given in Test Methods D1957, D2195, E326, E335, and E567.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded in accordance with the rounding off methods of Practice E29.  
1.5 Review the current appropriate Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, and safety precautions.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 7.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    9 pages
    English language
    sale 15% off
  • Standard
    9 pages
    English language
    sale 15% off
ASTM
ASTM E394-22(Test Method)
Standard Test Method for Iron in Trace Quantities Using the 1,10-Phenanthroline Method

SIGNIFICANCE AND USE
4.1 This test method is suitable for determining trace concentrations of iron in a wide variety of products, provided that appropriate sample preparation has rendered the iron and sample matrix soluble in water or other suitable solvent (see 10.1 and Note 4).  
4.2 This test method assumes that the amount of color developed is proportional to the amount of iron in the test solution. The calibration curve is linear over the specified range. Possible interferences are described in Section 5.
SCOPE
1.1 This test method covers the determination of trace concentrations of iron in the range from 1 to 100 μg/g in a wide variety of products.  
1.2 In determining the conformance of the test results using this method to applicable specifications; results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 Consult current OSHA regulations, suppliers’ Safety Data Sheets, and local regulations for all materials used in this specification.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    5 pages
    English language
    sale 15% off
  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM E2313-22(Test Method)
Standard Test Method for Aldehydes in Mono-, Di-, and Triethylene Glycol (using Spectrophotometry)

SIGNIFICANCE AND USE
5.1 Knowledge of the total aldehyde content of MEG is required to establish whether the product meets the requirements of its quality specifications.
SCOPE
1.1 This test method describes the spectrophotometric determination of total aldehyde content in mono-, di-, and triethylene glycol (MEG, DEG, and TEG). Alkoxyalcohols (hemiacetals), if present, are co-determined, whereas dialkoxyalkanes (acetals), if present, are not. The results provide a measure of the purity of the sample with respect to total aldehyde content.  
1.2 This test method is applicable to samples with total aldehyde concentration (as acetaldehyde) to 50 mg/kg or 35 mg/kg (as formaldehyde). The limit of detection (LOD) is 0.4 mg/kg and the limit of quantitation is 1.2 mg/kg.
Note 1: LOD and LOQ were calculated using the lowest level sample in the ILS.  
1.3 The following applies for the purposes of determining the conformance of the test results using this test method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8 and 7.1.1 – 7.1.6.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    6 pages
    English language
    sale 15% off
  • Standard
    6 pages
    English language
    sale 15% off
ASTM
ASTM D8266-19(Test Method)
Standard Test Method for Analysis of Bisphenol A (4,4`-Isopropylidenediphenol) by High Performance Liquid Chromatography

SIGNIFICANCE AND USE
4.1 Bisphenol A is used for production of polycarbonate or epoxy resin. The presence of impurities in bisphenol A is undesirable because they may slow down the polymerization and be impurities in the final product.  
4.2 Determination of the trace impurities, such as isomer of bisphenol A and the unreacted raw material, is often required. This test method is suitable for setting specifications and for using as an internal quality control where these products are produced or used.  
4.3 Purity is commonly reported by subtracting the determined expected impurities and water from 100 %. However, a HPLC analysis cannot determine absolute purity if unknown components are contained within the material being examined.
SCOPE
1.1 This test method covers the determination of trace impurities in bisphenol A (4,4′-Isopropylidenediphenol) by reverse-phase gradient high performance liquid chromatography (HPLC). It is generally meant for the analysis of bisphenol A of 99.5 % or greater.  
1.2 This method is applicable to bisphenol A samples containing impurity concentration between 2 and 400 mg/kg. Users of this method believe it is linear over a wider range.  
1.3 In determining the conformance of the test results using this method to applicable specification, results shall be rounded off in accordance with the rounding-off method of Practice E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Section 8.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM D891-18(Test Method)
Standard Test Methods for Specific Gravity, Apparent, of Liquid Industrial Chemicals

SIGNIFICANCE AND USE
4.1 Specific gravity, apparent, may be used as a qualitative test in establishing the identity of a chemical. It may be used to calculate the volume occupied by a product whose weight is known, or to calculate the weight of a product from its volume. It may be used to determine the composition of binary mixtures of pure chemicals. In the case of most refined industrial chemicals specific gravity, apparent, is of minimal value in defining quality, although it may detect gross contamination.  
4.2 Of the two test methods described, the pycnometer method (Test Method B, 1.1.2) is the most accurate and precise. For this reason it is the preferred method in case of disputes. The hydrometer method (Test Method A, 1.1.1) is the least accurate and precise, but it is also the simplest and fastest to perform and is often entirely satisfactory for many purposes. If the sample is too viscous to permit the hydrometer to float freely, the pycnometer test method should be used.
SCOPE
1.1 These test methods cover the determination of the specific gravity, apparent, of liquid industrial chemicals. Two test methods are covered as follows:  
1.1.1 Test Method A, specific gravity, apparent, by means of a hydrometer.  
1.1.2 Test Method B, specific gravity, apparent, by means of a pycnometer.  
Note 1: Test Method D4052 describes an instrumental procedure.  
1.2 In common usage the term specific gravity, apparent, is understood to mean specific gravity.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in these test methods with the exception of Fahrenheit (°F) in 5.1 as an example of a possible industrial specification unit.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Sections 8 and 16.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM E534-18(Test Method)
Standard Test Methods for Chemical Analysis of Sodium Chloride

SIGNIFICANCE AND USE
3.1 Sodium chloride occurs in nature. It is a necessary article of diet as well as the source for production of many sodium compounds and chlorine. The methods listed in 1.2 provide procedures for analyzing sodium chloride to determine if it is suitable for its intended use.
SCOPE
1.1 These test methods cover the chemical analyses usually required for sodium chloride.  
1.2 The analytical procedures appear in the following sections:    
Section  
Sample Preparation  
5 to 9  
Moisture  
10 to 17  
Water Insolubles  
18 to 26  
Calcium and Magnesium  
27 to 34  
Sulfate  
35 to 42  
Reporting of Analyses  
43 to 45  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 Review the current safety data sheets (SDS) for detailed information concerning toxicity, first-aid procedures, handling, and safety precautions.  
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
    7 pages
    English language
    sale 15% off
  • Standard
    7 pages
    English language
    sale 15% off