Phthalic Anhydride PA

Phthalic anhydride
1 highest quality,most competitive prices
2 relible credit,timely delivery
3 standard:GB/T15336-94
Phthalic anhydride
1 highest quality,most competitive prices
2 relible credit,timely delivery
3 standard:GB/T15336-94
Phthalic anhydride is an important organic chemical raw material which is mainly used to make plasticizer in plastic, alkyd resin, dye, unsaturated resin and some medicines or farm chemicals.
molecular formula :C
8
H
4
O
3
molecular weight :148.12
Item
Index
Top grade
First grade
Qualified product
Appearance
white scaly or crystalline powder
white scaly or crystalline powder with slight colors
molten Chroma(Chroma no. )≤
20
50
100
thermostable Chroma(Chroma no. )≤
50
150
-
Chroma of vitriol(Chroma no. )≤
60
100
150
crystallization point°C≥
130.5
130.3
130.0
Purity(mass fraction)%≥
99.50
99.50
99.00
Free acid(mass fraction)≤ %
0.20
0.30
0.50
Ash(mass fraction)%≤
0.05
-
-