Phthalic Anhydride
CAS NO.: 85-44-9
Molecular Formula: C₈H₄O₃
Molecular Weight: 148.12
Phthalic anhydride is a white crystalline compound and a key industrial chemical intermediate derived from naphthalene or ortho-xylene oxidation. It is an important building block in the production of a variety of plasticizers, resins, dyes, and other organic compounds. As a cyclic anhydride of phthalic acid, phthalic anhydride is known for its reactivity and versatility in chemical synthesis.
Main Applications:
Phthalic anhydride is widely used in the manufacture of plasticizers, especially dioctyl phthalate (DOP), which is used in flexible PVC products. It is also a crucial raw material for producing alkyd resins in paints and coatings, unsaturated polyester resins for fiberglass-reinforced plastics, and various dyes and pigments. Additionally, phthalic anhydride serves as a chemical intermediate in pharmaceuticals, agricultural chemicals, and flame retardants.
Typical Properties:
| Property | Value |
|---|---|
| Appearance | White flakes or crystals |
| Assay | ≥99.5% |
| Melting Point | 131°C |
| Boiling Point | 295°C |
| Flash Point | 152°C |
| Ignition Temperature | 580°C |
| Vapor Pressure (25°C) | 0.0013 mmHg |
| Density (20°C) | 1.53 g/cm³ |
| Solubility in Water | Reacts slowly to form phthalic acid |
| Storage | Store in a cool, dry, and well-ventilated area |
Phthalic anhydride from Snowhite ensures high purity, consistent quality, and stable performance for your industrial needs.
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Company Information:
Name: Snowhite Chemical Co., LTD.
Address: No.9 Baixia Road, Baixia District, Nanjing City, China
Tel.: +86-25-56215758
Mobile No.: +86-13776524331
Fax.: +86-25-56215758
Email: shirley@snowhitechem.com
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