PTHALIC ANHYDRIDE tus neeg muag khoom thiab chaw tsim khoom nyob rau hauv Suav teb

KHOOM PLIG ANHYDRIDE (NAPHTHELEN BASED)
OPERATIVE GB/T 15336-2013
TSIS MUAJ. Yam khoom QUALITY INDEX RESULTS
1 TAM SIM NO DAWB FLAKES LOSSIS CRYSTALLINE POWDER Dawb FLAKES lossis CRYSTALLINE POWDER
2 MOLTEN COLOR (PT-CO) ≤20 10
3 HUV COLOR (PT-CO) ≤50 30
4 SULFURIC ACID COLOR (PT-CO) ≤60 30
5 PURITY/% ≥99.50 99.96
6 CRYSTALLIZATION POINT ℃ ≥130.5 131.3
7 DAWB ACID /% ≤0.20 0.025