ASTM D4789-12

Standard Test Method for Solution Color of Bisphenol A (4,4`-Isopropylidenediphenol)

SIGNIFICANCE AND USE
4.1 Color is caused by impurities in the bisphenol A. The acceptable amount of color depends on the end-use of the bisphenol A.  
4.2 This test method can be used for internal quality control or for setting specifications.
SCOPE
1.1 This test method describes the procedure for determination of the Platinum-Cobalt Color of bisphenol A (4,4′-Isopropylidenediphenol) dissolved in methanol.  
1.2 This test method has been found applicable for the determination of Platinum-Cobalt color of bisphenol A between 20 and 100 color units.  
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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8.

General Information

• Status: Historical
• Publication Date: 14-Aug-2012
• ICS: 71.080.90 - Phenols
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.02 - Oxygenated Aromatics

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D4789 − 12
Standard Test Method for
1
Solution Color of Bisphenol A (4,4'-Isopropylidenediphenol)
This standard is issued under the fixed designation D4789; 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* 2.2 Other Documents:
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
1.1 This test method describes the procedure for determina-
4
1910.1200
tion of the Platinum-Cobalt Color of bisphenol A (4,4'-
NIST Letter Circular LC 1017, Standard for Checking the
Isopropylidenediphenol) dissolved in methanol. 5
Calibration of Spectrophotometers (200 to 1000 nm)
1.2 This test method has been found applicable for the
3. Summary of Test Method
determination of Platinum-Cobalt color of bisphenol A be-
3.1 Bisphenol A is dissolved in methanol. This solution is
tween 20 and 100 color units.
then transferred to a color comparison tube and the color
1.3 The values stated in SI units are to be regarded as
compared to that of the Platinum-Cobalt Color Standards,
standard. No other units of measurement are included in this
either visually or by means of a spectrophotometer. The color
standard.
is reported as that closest to the applicable standard.
1.4 This standard does not purport to address all of the
4. Significance and Use
safety concerns, if any, associated with its use. It is the
4.1 Color is caused by impurities in the bisphenol A. The
responsibility of the user of this standard to establish appro-
acceptable amount of color depends on the end-use of the
priate safety and health practices and determine the applica-
bisphenol A.
bility of regulatory limitations prior to use. For specific hazard
statements, see Section 8.
4.2 This test method can be used for internal quality control
or for setting specifications.
2. Referenced Documents
5. Interferences
2
2.1 ASTM Standards:
5.1 The presence of any turbidity or haze will affect the
D1209 Test Method for Color of Clear Liquids (Platinum-
color reading.
Cobalt Scale)
5.2 AbisphenolAcolorthatisoff-hue,ortintedwithrespect
D4297 Practice for Sampling and Handling Bisphenol A
to the color standards, may interfere with proper color com-
(4,4' -Isopropylidinediphenol)
parison.
D6809 Guide for Quality Control and Quality Assurance
Procedures for Aromatic Hydrocarbons and Related Ma-
6. Apparatus
terials
6.1 Color Comparison Tubes—Matched 100 mL, tall-form
E180 Practice for Determining the Precision of ASTM
Nessler tubes, provided with ground-on, optically clear, glass
Methods for Analysis and Testing of Industrial and Spe-
3
caps.Tubesshouldbeselectedsothattheheightofthe100-mL
cialty Chemicals (Withdrawn 2009)
graduation mark is 275 to 295 mm above the bottom of the
tube.
1
6.2 Color Comparator, constructed to permit visual com-
This test method is under the jurisdiction of ASTM Committee D16 on
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
parison of light transmitted through tall-form, 100 mL Nessler
Subcommittee D16.02 on Oxygenated Aromatics.
tubes in the direction of their longitudinal axis; and so that
Current edition approved Aug. 15, 2012. Published August 2012. Originally
white light is passed through or reflected off a white glass plate
approved in 1988. Last previous edition approved in 2008 as D4789 – 08. DOI:
10.1520/D4789-12.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contact ASTM Customer Service at [e-mail]. 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.
3 5
The last approved version of this historical standard is referenced on Available from National Institute of Standards and Technology (NIST), 100
www.astm.org. Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.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 ----------------------
D4789 − 12
anddirectedwithequalintensitythroughthetubes.Itshouldbe to determine the transmittance at a wavelength of 436 nm,
shielded so that no light enters the tubes from the sides. which would be an indication of the color intensity.
6.3 Spectrophotometer, equipped for liquid samples and for 10.7 If a timed color development test is run, measure the
measurements in the visible region. color30minafterthebisphenolA
...

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: D4789 − 08 D4789 − 12
Standard Test Method for
1
Solution Color of Bisphenol A (4,4*-Isopropylidenediphenol)
This standard is issued under the fixed designation D4789; 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 describes the procedure for determination of the Platinum-Cobalt Color of bisphenol A (4,48-
Isopropylidenediphenol) dissolved in methanol.
1.2 This test method has been found applicable for the determination of Platinum-Cobalt color of bisphenol A between 20 and
100 color units.
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 and health practices and determine the applicability of regulatory
limitations prior to use. For a specific hazard statement,statements, see Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
D4297 Practice for Sampling and Handling Bisphenol A (4,4' -Isopropylidinediphenol)
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
3
(Withdrawn 2009)
2.2 Other Documents:
4
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
5
NIST Letter Circular LC 1017 , Standard for Checking the Calibration of Spectrophotometers (200 to 1000 nm)
3. Summary of Test Method
3.1 Bisphenol A is dissolved in methanol. This solution is then transferred to a color comparison tube and the color compared
to that of the Platinum-Cobalt Color Standards, either visually or by means of a spectrophotometer. The color is reported as that
closest to the applicable standard.
4. Significance and Use
4.1 Color is caused by impurities in the bisphenol A. The acceptable amount of color depends on the end-use of the bisphenol
A.
4.2 This test method can be used for internal quality control or for setting specifications.
5. Interferences
5.1 The presence of any turbidity or haze will affect the color reading.
5.2 A bisphenol A color that is off-hue, or tinted with respect to the color standards, may interfere with proper color comparison.
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.02 on Oxygenated Aromatics.
Current edition approved Jan. 1, 2008Aug. 15, 2012. Published January 2008August 2012. Originally approved in 1988. Last previous edition approved in 20032008 as
D4789 – 03.D4789 – 08. DOI: 10.1520/D4789-08.10.1520/D4789-12.
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.
3
The last approved version of this historical standard is referenced on www.astm.org.
4
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.
5
Available from National Institute of Standards and Technology (NIST), 100 Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.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 ----------------------
D4789 − 12
6. Apparatus
6.1 Color Comparison Tubes—Matched 100 mL, tall-form Nessler tubes, provided with ground-on, optically clear, glass caps.
Tubes should be selected so that the height of the 100-mL graduation mark is 275 to 295 mm above the bottom of the tube.
6.2 Color Comparator, constructed to permit visual comparison of light transmitted through tall-form, 100 mL Nessler tubes
in the direction of their longitudinal axis; and so that white light is passed through or reflected off a white glass plate and directed
with equal intensity thr
...