Phthalic Anhydride PA CAS 85 44 9 Flake Powder
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Phthalic Anhydride PA CAS 85 44 9 flake powder
Product Introduction
Phthalic Anhydride (PA) is a fundamental organic chemical intermediate widely traded in global bulk chemical markets. This chemical has CAS 85-44-9 and is supplied in two mainstream appearances: flake and powder. The molecular formula of phthalic anhydride is C₈H₄O₃.
All Aliases of Phthalic Anhydride
o-Phthalic Anhydride
1,2-Benzenedicarboxylic Anhydride
2-Benzofuran-1,3-dione
Phthalic Acid Anhydride
Physical Properties and Product Description
Phthalic Anhydride is white crystalline flake or powder with slight pungent odor. It is slightly soluble in cold water, soluble in hot water, alcohol and aromatic solvents. The chemical is stable under normal temperature and dry environments, while it is easy to hydrolyze into phthalic acid once contacting moisture. The product has completed full REACH registration for EU market clearance, and standard MSDS download is available for import declaration and safety inspection.
General Grade Technical Specifications
|
Item |
Specification |
|---|---|
|
Phthalic Anhydride Purity |
≥99.5% |
|
Melting Point Range |
130.5℃ - 131.5℃ |
|
Free Acid Content |
≤0.20% |
|
Molten Color |
≤20 Hazen |
|
Residue on Ignition |
≤0.05% |
Main Applications
Phthalic Anhydride serves as a core raw material for downstream fine chemical manufacturing across multiple industries:
Plasticizer Production: Primary raw material to manufacture DOP, DOTP and other plasticizers used for PVC modification
Resin Manufacturing: Key ingredient for alkyd resin and unsaturated polyester resin applied in coatings, paints and glass fiber products
Dye and Pigment Industry: Important intermediate for synthetic organic dyes and colorant additives
Textile Auxiliaries: Used for textile finishing agents to improve fabric durability and waterproof performance
FAQ
Is phthalic anhydride hazardous cargo for ocean transportation? Phthalic anhydride is classified as 8-class corrosive dangerous goods for sea shipment with fixed UN number. Corresponding dangerous goods declaration documents are required before container loading.
Why does phthalic anhydride harden during long distance shipping? Product hardening is mainly caused by temperature fluctuation and moisture absorption during transit. Sealed waterproof packaging and constant-temperature storage can effectively avoid caking and hardening issues.
What compliance certificates support European import clearance? Complete REACH registration documents are provided to meet EU chemical import standards. Standard COA and safety files can be matched, and qualified files support free MSDS download for port customs audit.
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