ASTM-D4493 › Historical Revision Information
Standard Test Method for Solidification Point of Bisphenol A(4,4'-Isopropylidenediphenol)
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Scope
1.1 This test method describes the procedure for determination of the solidification point of 4,4`-isopropylidene diphenol, commercially known as bisphenol A, between 150 and 157°C.
1.2 The following applies to all specified limits in this standard: For purposes of determining conformance with this standard, an observed value or a calculated value shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.
1.3 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.
Significance and Use
The solidification point of bisphenol A is a direct indication of its purity, although it gives no information as to the nature of any impurities present.
High purity bisphenol A has a solidification point of approximately 157°C.
This test method can be used for internal quality control or for setting specifications.
Keywords
bishenol-A;isopropylidenediphenol; solidification point; ICS Number Code 71.080.90 (Phenols)
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Document Number
ASTM-D4493-03
Revision Level
2003 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
Jan. 10, 2003
Document Type
Test Method
Page Count
3 pages
Committee Number
D16.02