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Phthalic anhydride(PA)
Phthalic Anhydride (PA) is an important organic chemical intermediate supplied as white flakes or crystalline powder. It is widely used in the manufacture of plasticizers, unsaturated polyester resins, alkyd resins, pigments, dyes, coatings and other chemical products.
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Details description
1. Product Information
Product Name: Phthalic Anhydride
Chemical Name: o-Phthalic Anhydride
CAS No.: 85-44-9
Molecular Formula: C₈ H₄ O₃
Molecular Weight: 148.12 g/mol
2. Product Description
Phthalic Anhydride (PA) is an important organic chemical intermediate supplied as white flakes or crystalline powder. It is widely used in the manufacture of plasticizers, unsaturated polyester resins, alkyd resins, pigments, dyes, coatings and other chemical products.
3. Specification
Items | Index | ||
Excellent products | First-class products | Qualified products | |
| Appearance | White flake or crystalline powder | Scaly or crystalline powder with white stripes and other tones | |
| Melt chromaticity (chromaticity number)≤ | 20 | 50 | 100 |
| Thermal stability chromaticity (chromaticity number)≤ | 50 | 150 | - |
| Sulfuric acid color number (chromaticity number)≤ | 40 | 100 | 150 |
| Crystallization point,℃≥ | 130.5 | 130.3 | 130.0 |
| Purity(mass fraction)%≥ | 99.5 | 99.5 | 99.5 |
| Free acid content(mass fraction)%≤ | 0.20 | 0.30 | 0.50 |
4. Applications
Mainly used in plasticizers, unsaturated polyester resins, alkyd resins, pigments, dyes, coatings and other organic chemical intermediates.
5. Packaging
25 kg bags or 500 kg jumbo bags. Other packaging may be available upon agreement.
6. Storage&Handling
- Store in a cool, dry and well-ventilated place.
- Keep containers tightly closed and protect from moisture, heat and incompatible materials.
- Refer to the Safety Data Sheet (SDS) for detailed safety, handling and transportation information.
7. Disclaimer
The information contained herein is based on our current knowledge and is intended for general guidance only. The values shown above are product specifications unless otherwise agreed in writing. Users are responsible for determining the suitability of the product for their intended application.
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