HG/T 4637-2014
Guaiacol (o-Hydroxyanisole)
HG/T 4637-2014
O-Hydroxybenzoic acid(Salicylic acid)
HG/T 4637-2014
HG/T 4637-2014
Methods of analysis for silver-copper brazing for electronic devices--Determination of tin (spectrophotometric C21H38BrN absorption method)
HG/T 4637-2014
Non-ionic surface active agents-Polyalkoxylated derivatives -Determination of hydroxyl value-Phthalic anhydride method
HG/T 4637-2014
Polyglycols for industrial use — Determination of hydroxyl number — Phthalic anhydride esterification method
HG/T 4637-2014
SURFACE ACTIVE AGENTS. POLYGLYCOLS. DETERMINATION OF HYDROXYL NUMBER. PHTHALIC ANHYDRIDE ESTERIFICATION METHOD
HG/T 4637-2014
Test Method for Hydroxyl Groups by Phthalic Anhydride Esterification (Withdrawn 2001)
HG/T 4637-2014
Phthalic anhydride for industrial use-Methods of test-Determination of iron content-2,2′-bipyridyl photometric method
HG/T 4637-2014
HG/T 4637-2014
Non-ionic surface active agents — Polyalkoxylated derivatives — Determination of hydroxyl value — Phthalic anhydride method
HG/T 4637-2014
HG/T 4637-2014
Phthalic anhydride for industrial use — Methods of test — Part 11: Determination of iron content — 2,2'- Bipyridyl photometric method
HG/T 4637-2014
Phenol, o-cresol, m-cresol, p-cresol, cresylic acid and xylenols for industrial use — Methods of test — Part 3: Determination of neutral oils and pyridine bases