PA (Phthalic Anhydride) CAS 85-44-9 C8h4o3 Purity 99.5%Min

• Customization: Available
• CAS No.: 85-44-9
• Formula: C8h4o3
• Model NO.: Phthalic Anhydride
• EINECS: 201-607-5
• Appearance: Flake
• Source: Nap&Ox
• Colour: White
• Purity: 99.5%Min
• Crystallization Point: 130.5min
• Heat Color: 50max
• Free Acid: 0.2&Max
• Transport Package: Bag
• Specification: industrial grade
• Trademark: ACHILLESCHEM
• Origin: China
• HS Code: 291735
• Production Capacity: 50000mt/Year

Product Description

Product Description

 

Physicochemical property
White acicular crystal, flammable, easily sublimed below boiling point, with a slight odor. The relative density is 1.527. Melting point 131.6ºC. Boiling point 295ºC (sublimation). Flash point (open cup) 151.7ºC. Ignition point 584ºC. Slightly soluble in hot water and ether, soluble in ethanol, benzene and pyridine.

Manufacture method
1. Naphthalene catalytic oxidation method Naphthalene is fused and vaporized with air in a boiling-bed or fixed-bed reactor, in the presence of vanadium pentoxide catalyst, catalytic oxidation to produce anhydride gas, which is condensed and hot melted to obtain crude anhydride. After heat treatment, refined anhydride is obtained by vacuum distillation, condensation and separation.
2. O-xylene oxidation method is obtained by using o-xylene as raw material and air in a fixed bed reactor in the presence of vanadium pentoxide and other catalysts.

use
One of the important organic chemical raw materials. It can be used as an intermediate of organic compounds such as plasticizer, alkyd resin, unsaturated polyester resin, dyes and pigments, medicine, food additives and pesticides.

 

Product Parameters

Test			Unit of	Specifications			Test	Conclusion
Description			Measure	Min	Max		Result
Appearance				White Flakes Or Crystalline Powder			Complied	Qualified
Purity			%	99.5			99.95	Qualified
Free Acid			%		0.2		0.028	Qualified
Crystallization Point			°C	130.5			130.7	Qualified
Heat Color			(Pt-Co)		50		30	Qualified
Molten Color			(Pt-Co)		20		10	Qualified
Sulfuric Acid Color			(Pt-Co)		40		20	Qualified

 

 

Packaging & Shipping

 

 

 

 

 

Certifications

Our office view

 

Our exhibitions

 

Our Advantages

Good relationship with suppliers
We conclude strategic cooperation with KEY customers: we sell raw materials to them, and in the meanwhile we also distribute their finished product, to keep competitive.

Warehouse stcok & supply stability
We prepare stock in our warehouse to keep the supply stability. we could do sub-package, blending and mixing in our warehouse. 

10+ years Experiences
 Both our sales and  purchase team have more than 10 years export experience in Chemical industry. + professional docs service. 

24 hour service
24 hours quick response. Professional after sales service to assure the customer satisfaction.