GB/T 31514-2015
Classification method for the hazardous characterisitics of tetrahydrophthalic acid anhydride
GB/T 31514-2015
GB/T 31514-2015
GB/T 31514-2015
Phthalic anhydride for industrial use. Methods of test. Part 4. Determination of phthalic anhydride content. Titrimetric method
GB/T 31514-2015
Non-ionic surface active agents-Polyalkoxylated derivatives -Determination of hydroxyl value-Phthalic anhydride method
GB/T 31514-2015
Polyglycols for industrial use — Determination of hydroxyl number — Phthalic anhydride esterification method
GB/T 31514-2015
SURFACE ACTIVE AGENTS. POLYGLYCOLS. DETERMINATION OF HYDROXYL NUMBER. PHTHALIC ANHYDRIDE ESTERIFICATION METHOD
GB/T 31514-2015
Test Method for Hydroxyl Groups by Phthalic Anhydride Esterification (Withdrawn 2001)
GB/T 31514-2015
Non-ionic surface active agents — Polyalkoxylated derivatives — Determination of hydroxyl value — Phthalic anhydride method