Phthalic Anhydride (PA)
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Resin & Coating Raw Materials
Phthalic anhydride, abbreviated as PA, is a cyclic anhydride formed by dehydration of phthalic acid in the molecule. Phthalic anhydride is a white solid and is an important raw material in the chemical industry. Mainly used in dyes, pharmaceuticals, polyester resins, alkyd resins, plastic plasticizers, etc.
In compound paper bags or plastics woven bags with PE bags inside (net weight: 25 kg)
18MT/20’FCL with pallets, 20MT/20’FCL without pallet 27MT/40’FCL with or without pallet
In jumbo bag
| CAS No. | 85-44-9 |
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Appearance |
White scale |
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Item
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Superior quality
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First-class
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Testing Result
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Appearance
|
White scale or crystalline powder
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White scale
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|
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Melting Chroma/(Co No)
|
20 Max.
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50 Max.
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15
|
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Thermally stable chroma /(Co No)
|
50 Max.
|
150 Max.
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40
|
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Purity(%)
|
99.5 Min.
|
99.5 Min.
|
99.97
|
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Free acid mass
fraction/% |
0.20 Max.
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0.30 Max.
|
0.03
|
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Crystallizing
Point(℃) |
130.5 Min.
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130.3 Min.
|
130.5
|
|
Sulfuric acid
color /(Co No) |
40 Max.
|
100 Max.
|
40
|
- A white crystalline solid with a pungent odor, chemical formula C8H4O3.
- Essential precursor for phthalate esters, used in manufacturing PVC, vinyl flooring, cables, and synthetic leather.
- Reacts with alcohols to form phthalate esters, enhancing flexibility and durability of PVC materials.
- Key component in polyester resin production by reacting with glycols, crucial for fiberglass-reinforced plastics, paints, coatings, and automotive parts.
- High reactivity and versatility make it valuable in the chemical industry for various industrial products.
- Volatility and sensitivity to moisture require careful handling and storage measures to prevent degradation.
- Used in the synthesis of dyes, pigments, and flame retardants.
- Plays a pivotal role in the creation of flexible materials and high-performance industrial products.
- Its distinctive properties contribute to its wide-ranging applications across multiple industries.
- Phthalic anhydride stands as a cornerstone in modern manufacturing and material science, supporting the production of everyday consumer goods and industrial materials.
