GB/T 25174-2010
Feed additive - 4′,7-dihydroxyisoflavone
GB/T 25174-2010
Non-ionic surface active agents-Polyalkoxylated derivatives -Determination of hydroxyl value-Phthalic anhydride method
GB/T 25174-2010
Polyglycols for industrial use — Determination of hydroxyl number — Phthalic anhydride esterification method
GB/T 25174-2010
SURFACE ACTIVE AGENTS. POLYGLYCOLS. DETERMINATION OF HYDROXYL NUMBER. PHTHALIC ANHYDRIDE ESTERIFICATION METHOD
GB/T 25174-2010
Test Method for Hydroxyl Groups by Phthalic Anhydride Esterification (Withdrawn 2001)
GB/T 25174-2010
Non-ionic surface active agents — Polyalkoxylated derivatives — Determination of hydroxyl value — Phthalic anhydride method