ASTM D4789-08
(Test Method)Standard Test Method for Solution Color of Bisphenol A (4,4′-Isopropylidenediphenol)
Standard Test Method for Solution Color of Bisphenol A (4,4<span class='unicode'>′</span>-Isopropylidenediphenol)
SIGNIFICANCE AND USE
p>Color is caused by impurities in the bisphenol A. The acceptable amount of color depends on the end-use of the bisphenol A.
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 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, see Section 8.
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Designation: D4789 − 08
StandardTest 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* 3. Summary of Test Method
1.1 This test method describes the procedure for determina- 3.1 Bisphenol A is dissolved in methanol. This solution is
tion of the Platinum-Cobalt Color of bisphenol A (4,48- then transferred to a color comparison tube and the color
Isopropylidenediphenol) dissolved in methanol. compared to that of the Platinum-Cobalt Color Standards,
either visually or by means of a spectrophotometer. The color
1.2 This standard does not purport to address all of the
is reported as that closest to the applicable standard.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Significance and Use
priate safety and health practices and determine the applica-
4.1 Color is caused by impurities in the bisphenol A. The
bility of regulatory limitations prior to use. For a specific
acceptable amount of color depends on the end-use of the
hazard statement, see Section 8.
bisphenol A.
2. Referenced Documents
4.2 This test method can be used for internal quality control
2
or for setting specifications.
2.1 ASTM Standards:
D1209 Test Method for Color of Clear Liquids (Platinum-
5. Interferences
Cobalt Scale)
5.1 The presence of any turbidity or haze will affect the
D4297 Practice for Sampling and Handling Bisphenol A
color reading.
(4,4' -Isopropylidinediphenol)
D6809 Guide for Quality Control and Quality Assurance 5.2 AbisphenolAcolorthatisoff-hue,ortintedwithrespect
Procedures for Aromatic Hydrocarbons and Related Ma- to the color standards, may interfere with proper color com-
terials parison.
E180 Practice for Determining the Precision of ASTM
6. Apparatus
Methods for Analysis and Testing of Industrial and Spe-
3
6.1 Color Comparison Tubes—Matched 100 mL, tall-form
cialty Chemicals (Withdrawn 2009)
Nessler tubes, provided with ground-on, optically clear, glass
2.2 Other Documents:
caps.Tubesshouldbeselectedsothattheheightofthe100-mL
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
4 graduation mark is 275 to 295 mm above the bottom of the
1910.1200
tube.
NIST Letter Circular LC 1017 , Standard for Checking the
5
Calibration of Spectrophotometers (200 to 1000 nm) 6.2 Color Comparator, constructed to permit visual com-
parison of light transmitted through tall-form, 100 mL Nessler
tubes in the direction of their longitudinal axis; and so that
1
This test method is under the jurisdiction of ASTM Committee D16 on
white light is passed through or reflected off a white glass plate
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
anddirectedwithequalintensitythroughthetubes.Itshouldbe
Subcommittee D16.02 on Oxygenated Aromatics.
shielded so that no light enters the tubes from the sides.
Current edition approved Jan. 1, 2008. Published January 2008. Originally
approved in 1988. Last previous edition approved in 2003 as D4789 – 03. DOI:
6.3 Spectrophotometer, equipped for liquid samples and for
10.1520/D4789-08.
2
measurements in the visible region.
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
NOTE 1—The spectrophotometer must be clean and in excellent
Standards volume information, refer to the standard’s Document Summary page on
operating condition. The instrument should be calibrated in accordance
the ASTM website.
3 with the instructions given in NIST Letter Circular LC 1017. For good
The last approved version of this historical standard is referenced on
agreement with the visual method, the spectrophotometer or colorimeter
www.astm.org.
4
should be a filter type instrument.
AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
6.4 Spectrophotometer Cells, cells of different path lengths
www.access.gpo.gov.
5
may be used as long as the equipment is calibrated with the
Available from National Institute of Standards and Technology (NIST), 100
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov. same length cells as the sample solution.
*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
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D4789 −
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:D4789–03 Designation: D 4789 – 08
Standard Test Method for
1
Solution Color of Bisphenol A (4,4*-Isopropylidenediphenol)
This standard is issued under the fixed designation D 4789; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1This test method describes the procedure for determination of the Platinum-Cobalt Color of 4,48-Isopropylidenediphenol,
commercially known as bisphenol A, dissolved in methanol. *
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 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, see Section 8.
2. Referenced Documents
2
2.1 ASTM Standards:
D 1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)
2
D 4297Practice for Sampling and Handling 4,48-Isopropylidenediphenol (Bisphenol A) Practice for Sampling and Handling
Bisphenol A (4,4 -Isopropylidinediphenol)
D 6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
E 180 Practice for Determining the Precision ofASTM Methods forAnalysis andTesting of Industrial and Specialty Chemicals
2.2 Other Documents:
OSHA Regulations, 29CFR, paragraphs 1910.1000 and 1910.1200
NIST Letter Circular LC 1017, Other Documents:
3
OSHA Regulations, 29 CFR, paragraphs 1910.1000 and 1910.1200
4
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 bisphenolA. 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 AbisphenolAcolorthatisoff-hue,ortintedwithrespecttothecolorstandards,mayinterferewithpropercolorcomparison.
1
This test method is under the jurisdiction ofASTM Committee D16 onAromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.02 on Oxygenated Aromatics.
Current edition approved Jan. 10, 2003.1, 2008. Published March 2003.January 2008. Originally approved in 1988. Last previous edition approved in 19942003 as
D4789–94.D 4789 – 03.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 06.04.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 15.05.
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.
4
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.
4
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 ----------------------
D4789–08
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
...
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