UNE 55717:1984
SURFACE ACTIVE AGENTS. POLYGLYCOLS. DETERMINATION OF HYDROXYL NUMBER. PHTHALIC ANHYDRIDE ESTERIFICATION METHOD
UNE 55717:1984
Non-ionic surface active agents-Polyalkoxylated derivatives -Determination of hydroxyl value-Phthalic anhydride method
UNE 55717:1984
SURFACE ACTIVE AGENTS. NON-IONIC SURFACE ACTIVE AGENTS. POLYALKAXYLATED DERIVATIVES. DETEMINATION OF HYDROXYL VALUE. PHTALIC ANHYDRIDE METHOD
UNE 55717:1984
Non-ionic surface active agents — Polyalkoxylated derivatives — Determination of hydroxyl value — Phthalic anhydride method