High Quality Phthalic Anhydride/ PA CAS No. 85-44-9 for Upr

• Customization: Available
• CAS No.: 85-44-9
• Formula: C8h4o3
• Model NO.: PA
• EINECS: 201-607-5
• Classification: Phthalic Anhydride
• Shape: Flake
• Grade Standard: Industrial Grade
• Source: Nap & Ox
• Chroma of Thermal Stability: 40
• Purity: 99.98%
• Free Acid: 0.027%
• Fused Chroma: 10
• Chroma of Sulphuric: 20
• Crystallization Point: 130.7
• Transport Package: Bag
• Specification: more than 99.5%
• Origin: China
• HS Code: 291735
• Production Capacity: 500000/Year

Product Description

Product Description

ITEM	INDEX
	Top grade	Result
Appearance	white scaly or crystalline powder
Molten Chroma(Chroma no. )≤	20	10
thermostable Chroma(Chroma no. )≤	50	40
Chroma of vitriol(Chroma no. )≤	40	20
crystallization point°C≥	130.5	130.7
Purity(mass fraction)%≥	99.5	99.98
Free acid(mass fraction)≤ %	0.2	0.027

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.

Detailed Photos

 

Packaging & Shipping

(A)500KG/BAG


         500KG/BAG,WITH PALLET

(B) 25KG/BAG


       25KG/BAG, WITH PALLET

 

FAQ

1.what is you payments?
 

Payment by T/T, ,L/C , OA
 

2. How to confirm the Product Quality?
 

1. You can get free samples for some products,

2. We have our own quality control department will provides quality control reports before shipment.

3.We can accept third party inspection.

3. How long is lead time, and how should you deliver to us?

We will arrange shipping within 3-5 days for small order, 7 days for bulk order. Some of the products we have stock can send to you immediately. After over 10 years on global trade, we has formed a mature international trade logistics chain.  We can offer "door to door service", our professional team gives you this "one-stop" service to save your time .