Kaiyuan Chemicals Co., Ltd.
Renowned Chemicals Manufacturer & Exporter in China.

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L-Cystine | L-Leucine | L-Tyrosine | Hydroquinone | P-Benzoquinone

Quinizarin | 1,4-Dihydroxy Anthraquinone Leuco compound

1,4-Diamino Anthraquinone Leuco Naphthol series

Chemical Manganese Dioxide | Manganese Carbonate | Iron Oxide Black

Benzaldehyde | Benzyl Chloride | NPK Component Fertilizer | Urea

Phthalic anhydride(PA) | Dioctyl phthalate(DOP) 

Dibutyl phthalate | Diisobutyl phthalate | Manganese Chloride Tetrahydrate

Phthalic anhydride (PA)

Product Name Phthalic anhydride (PA)
Formula C8H4O3
Properties this product is a white flake or crystal powder. The melting point is 130.5C, the specific gravity is 1.527; it is difficult to dissolve in water and ether; it possessess the property of anhydride of organic acid, for example: it reacts with alcohol to form ester through dehydrating, and reacts with hot water and steam to form acid, and benzoic acid through decarboxylating.
Specifications terms index
High class First class qualified
appearance White flake orCrystal powder White-other color traceFlake or crystal powder
Color number of moltePA(Pa-C0)≤  20 50 100
Color number of heatStability(Pa-Co)≤ 50

150

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Solidifica-tion point℃ ≥

130.5

130.3

130.0

purity% ≥

99.5

99.5

99.0

Free acid(%)≤

0.5

0.5

0.5

ashes% ≤

0.05

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Package, storage & transportations 25kg/50kg packed in PP woven bag lined with PVC bag or compound bag..
Uses this product is major used in the production of the phthalic ester series plasticizer, and the unsaturated ployester resins, alkyd resins, glusides, plastics, paints, dyes and medicine industries.


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