ASTM D6143-18
(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, 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.
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Designation: D6143 − 18
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* D4297 Practice for Sampling and Handling Bisphenol A(4,4'
-Isopropylidinediphenol)
1.1 This test method covers the procedure to determine the
D4790 Terminology of Aromatic Hydrocarbons and Related
iron content of bisphenol A (4,4'-isopropylidenediphenol).
Chemicals
1.2 This test method has a lower detection limit of 0.1
D6809 Guide for Quality Control and Quality Assurance
mg/kg, and an upper limit of 10 mg/kg of iron in bisphenol A.
Procedures for Aromatic Hydrocarbons and Related Ma-
If the iron content is higher, it may be necessary to dilute the
terials
sample. A longer path length cell can also be used for better
E29 Practice for Using Significant Digits in Test Data to
accuracy at lower Fe levels, as well as calibration within the
Determine Conformance with Specifications
range expected (for example, 0 to 1 mg/kg versus 0 to 10
E691 Practice for Conducting an Interlaboratory Study to
mg/kg for samples expected to be in the 0 to 1 mg/kg range.
Determine the Precision of a Test Method
1.3 In determining the conformance of the test results using
2.2 Other Documents:
this method to applicable specifications, results shall be OSHA Regulations, 29 CFR paragraphs 1910.1000 and
3
rounded off in accordance with the rounding-off method of
1910.1200
Practice E29.
3. Terminology
1.4 The values stated in SI units are to be regarded as
3.1 See Terminology D4790 for definitions of terms used in
standard. No other units of measurement are included in this
this standard.
standard.
1.5 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
4.1 Bisphenol A is dissolved in methanol, then treated with
responsibility of the user of this standard to establish appro-
hydroxylamine hydrochloride to convert any ferric iron present
priate safety, health, and environmental practices and deter-
to ferrous iron. The ferrous iron is then complexed with an iron
mine the applicability of regulatory limits prior to use. For a
reagent to form a purple/maroon chromophore that is quanti-
specific hazard statement, see Section 9.
fied by visible spectrophotometry at 560 nm.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
5. Significance and Use
ization established in the Decision on Principles for the
5.1 Iron may increase the color of bisphenol A and affect
Development of International Standards, Guides and Recom-
other properties of end-use products.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5.2 High purity bisphenol A typically has less than 1 mg/kg
of iron.
2. Referenced Documents
2
6. Interferences
2.1 ASTM Standards:
D1193 Specification for Reagent Water
6.1 No direct interferences have been observed in the use of
this method.
1
This test method is under the jurisdiction of ASTM Committee D16 on
7. Apparatus
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
bility of D16.02 on Oxygenated Aromatics.
7.1 Visible Spectrophotometer, capable of measuring absor-
Current edition approved June 1, 2018. Published June 2018. Originally
bance at 560 nm.
approved in 1997. Last previous edition approved in 2013 as D6143 – 13. DOI:
10.1520/D6143-18.
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 Available from U.S. Government Printing Office Superintendent of Documents,
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 − 18
7.2 Analytical Balance, capable of weighing 100 g to the 10. Sampling and Handling
nearest 0.01 g.
10.1 Sample bisphenol A (BPA) in accordance with Practice
7.3 Glassware, 100 mL and 1 L volumetric flasks, 500 mL D4297.
graduated cylinders, 10 mL volumetric pipettes, 1 cm square
11. Calibration
quartz cuvettes.
11.1 Weigh into separate 100 mL volumetric flasks, to the
7.4 All Gla
...
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 − 13 D6143 − 18
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 safety, health, and healthenvironmental 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.
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 an iron reagent to form a purple/maroon chromophore that is
quantified by visible spectrophotometry at 560 nm.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons Aromatic, Industrial, Specialty and Related Chemicals and is the direct
responsibility of D16.02 on Oxygenated Aromatics.
Current edition approved June 1, 2013June 1, 2018. Published June 2013June 2018. Originally approved in 1997. Last previous edition approved in 20092013 as
D6143 – 09.D6143 – 13. DOI: 10.1520/D6143-13.10.1520/D6143-18.
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’sstandard’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 − 18
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.
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 Analyti
...
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