1) PA: use for polyester resins. 2) Purity: 99.5% flake 3)Package:25kg/bag.
It 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 :C8H4O3molecular weight :148.12Quality Level: GB/T 15336-2006
Item | Index | ||
Top grade | First grade | Salable 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 | - | - |
2012 hit product phthalic anhydride--99.8%
