ASTM D6143-13
(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<emph type="bdit">′</emph > - 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 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 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 and health practices and determine the applicability of regulatory limits prior to use. For a specific hazard statement, see Section 9.
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Designation: D6143 − 13
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* Procedures for Aromatic Hydrocarbons and Related Ma-
terials
1.1 This test method covers the procedure to determine the
E29 Practice for Using Significant Digits in Test Data to
iron content of bisphenol A (4,4'-isopropylidenediphenol).
Determine Conformance with Specifications
1.2 This test method has a lower detection limit of 0.1
E691 Practice for Conducting an Interlaboratory Study to
mg/kg, and an upper limit of 10 mg/kg of iron in bisphenolA.
Determine the Precision of a Test Method
If the iron content is higher, it may be necessary to dilute the
2.2 Other Documents:
sample. A longer path length cell can also be used for better
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
accuracy at lower Fe levels, as well as calibration within the 3
1910.1200
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.
3. Terminology
1.3 In determining the conformance of the test results using 3.1 See Terminology D4790 for definitions of terms used in
this method to applicable specifications, results shall be
this standard.
rounded off in accordance with the rounding-off method of
4. Summary of Test Method
Practice E29.
4.1 Bisphenol A is dissolved in methanol, then treated with
1.4 The values stated in SI units are to be regarded as
hydroxylaminehydrochloridetoconvertanyferricironpresent
standard. No other units of measurement are included in this
to ferrous iron. The ferrous iron is then complexed with
standard.
FerroZine to form a purple/maroon chromophore that is
1.5 This standard does not purport to address all of the
quantified by visible spectrophotometry at 560 nm.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 Iron may increase the color of bisphenol A and affect
bility of regulatory limits prior to use. For a specific hazard
other properties of end-use products.
statement, see Section 9.
5.2 High purity bisphenolAtypically has less than 1 mg/kg
of iron.
2. Referenced Documents
2
2.1 ASTM Standards:
6. Interferences
D1193 Specification for Reagent Water
6.1 No direct interferences have been observed in the use of
D4297 Practice for Sampling and Handling Bisphenol A
this method.
(4,4' -Isopropylidinediphenol)
D4790 Terminology ofAromatic Hydrocarbons and Related
7. Apparatus
Chemicals
7.1 Visible Spectrophotometer, capable of measuring absor-
D6809 Guide for Quality Control and Quality Assurance
bance at 560 nm.
7.2 Analytical Balance, capable of weighing 100 g to the
nearest 0.01 g.
1
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
7.3 Glassware, 100 mL and 1 L volumetric flasks, 500 mL
D16.02 on Oxygenated Aromatics.
graduated cylinders, 10 mL volumetric pipettes, 1 cm square
Current edition approved June 1, 2013. Published June 2013. Originally
approved in 1997. Last previous edition approved in 2009 as D6143 – 09. DOI: quartz cuvettes.
10.1520/D6143-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
*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 − 13
7.4 All Glassware used in this test method should be willgivesolutionswithnominalconcentrationsof0.2,0.5,1.0,
dedicated and thoroughly cleaned prior to use. 2.0, 4.0, 8.0, and 10 mg/kg, respectively.
11.2 Prepare and analyze two 10.0 6 0.1 g aliquots of each
8. Reagents and Materials
of the above calibration standard solutions and two blanks in
8.1 Purity of Reagents—Reagent grade chemicals shall be
accordance with the instructions given in Section 12.
used in all tests. Unless otherwise indicated, it is intended that
11.3 Calibrate the instrument in accordance w
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6143 − 09 D6143 − 13
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*
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 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 and health practices and determine the applicability of regulatory limits
prior to use. For a specific hazard statement, see Section 89.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
D4297 Practice for Sampling and Handling Bisphenol A (4,4' -Isopropylidinediphenol)
D4790 Terminology of Aromatic Hydrocarbons and Related Chemicals
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 Other Documents:
3
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 See Terminology D4790 for definitions of terms used in this standard.
4. Summary of Test Method
4.1 Bisphenol A is dissolved in methanol, then treated with hydroxylamine hydrochloride to convert any ferric iron present to
ferrous iron. The ferrous iron is then complexed with FerroZine to form a purple/maroon chromophore that is quantified by visible
spectrophotometry at 560 nm.
5. 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.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of D16.02 on
Oxygenated Aromatics.
Current edition approved Dec. 1, 2009June 1, 2013. Published December 2009June 2013. Originally approved in 1997. Last previous edition approved in 20052009 as
D6143 – 05.D6143 – 09. DOI: 10.1520/D6143-09.10.1520/D6143-13.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
www.access.gpo.gov.
*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 − 13
6. Interferences
6.1 No direct interferences have been observed in the use of this method.
7. Apparatus
7.1 Visible Spectrophotometer, capable of measuring absorbance at 560 nm.
7.2 Analytical Balance, capable of weighing 100 g to the nearest 0.01 g.
7.3 Glassware, 100 mL and 1 L volumetric flasks, 500 mL graduated cylinders, 10 mL volumetric pipettes, 1 cm square quartz
cuvettes.
7.4 All Glassware used in this test method should be dedicated and thoroughly cleaned prior to use.
8. Reagents and Materials
8.1 Purity of Reagents—Reagent grade chemicals shall be used in all tests. Unless ot
...
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