ASTM D6143-23

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 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.

General Information

• Status: Published
• Publication Date: 31-Mar-2023
• ICS: 71.040.40 - Chemical analysis
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.02 - Oxygenated Aromatics

Standards Content (Sample)

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.
Designation: D6143 − 23
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 determination of the iron
D4790 Terminology of Aromatic Hydrocarbons and Related
content of bisphenol A (4,4'-isopropylidenediphenol).
Chemicals
1.2 This test method has a lower detection limit of
D6809 Guide for Quality Control and Quality Assurance
0.1 mg ⁄kg, and an upper limit of 10 mg ⁄kg of iron in bisphenol
Procedures for Aromatic Hydrocarbons and Related Ma-
A. If the iron (Fe) content is higher, it may be necessary to
terials
dilute the sample. A longer path length cell can also be used for
E29 Practice for Using Significant Digits in Test Data to
better accuracy at lower Fe levels, as well as calibration within
Determine Conformance with Specifications
the range expected (for example, 0 mg ⁄kg to 1 mg/kg versus
E691 Practice for Conducting an Interlaboratory Study to
0 mg ⁄kg to 10 mg/kg for samples expected to be in the
Determine the Precision of a Test Method
0 mg ⁄kg to 1 mg/kg range.
E1615 Test Method for Determination of Trace Quantities of
1.3 In determining the conformance of the test results using
Iron by Visible Spectrophotometry
this method to applicable specifications, results shall be
2.2 Other Documents:
rounded off in accordance with the rounding-off method of
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
Practice E29.
1910.1200 Air contaminates – table of exposure limits and
3
1.4 The values stated in SI units are to be regarded as hazard communication
standard. No other units of measurement are included in this
3. Terminology
standard.
1.5 This standard does not purport to address all of the
3.1 See Terminology D4790 for definitions of terms used in
safety concerns, if any, associated with its use. It is the this standard.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- 4. Summary of Test Method
mine the applicability of regulatory limits prior to use. For a
4.1 Bisphenol A is dissolved in methanol, then treated with
specific hazard statement, see Section 9.
hydroxylamine hydrochloride to convert any ferric iron present
1.6 This international standard was developed in accor-
to ferrous iron. The ferrous iron is then complexed with an iron
dance with internationally recognized principles on standard-
reagent to form a purple/maroon chromophore that is quanti-
ization established in the Decision on Principles for the
fied by visible spectrophotometry at 560 nm.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Significance and Use
Barriers to Trade (TBT) Committee.
5.1 Iron may increase the color of bisphenol A and affect
2. Referenced Documents
other properties of end-use products.
2
2.1 ASTM Standards:
5.2 High purity bisphenol A typically has less than 1 mg/kg
D1193 Specification for Reagent Water
of iron.
1
This test method is under the jurisdiction of ASTM Committee D16 on
6. Interferences
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi-
6.1 No direct interferences have been observed in the use of
bility of D16.02 on Oxygenated Aromatics.
Current edition approved April 1, 2023. Published June 2023. Originally
this method.
approved in 1997. Last previous edition approved in 2018 as D6143 – 18. DOI:
10.1520/D6143-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. 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 − 23
7. Apparatus 9. Hazards
7.1 Visible Spectrophotometer, capable of measuring absor- 9.1 Consult current OSHA regulations, local regulations
...

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 − 18 D6143 − 23
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 determination of the iron content of bisphenol A (4,4'-
isopropylidenediphenol).
1.2 This test method has a lower detection limit of 0.10.1 mg mg/kg, ⁄kg, and an upper limit of 1010 mg mg/kg ⁄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, 00 mg ⁄kg to 1 mg/kg versus
00 mg ⁄kg to 10 mg/kg for samples expected to be in the 00 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.
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
E1615 Test Method for Determination of Trace Quantities of Iron by Visible Spectrophotometry
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of D16.02
on Oxygenated Aromatics.
Current edition approved June 1, 2018April 1, 2023. Published June 2018June 2023. Originally approved in 1997. Last previous edition approved in 20132018 as
D6143 – 13.D6143 – 18. DOI: 10.1520/D6143-18.10.1520/D6143-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 − 23
2.2 Other Documents:
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200 paragraphs 1910.1000 and 1910.1200Air contaminates –
3
table of exposure limits and hazard communication
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 an iron reagent 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.
6. Interferences
6.1 No direct interferences have been observed in the use of this method.
7. Apparatus
7.1 Visible Spectrophotometer, capable of me
...