Phthalic Anhydride

Hosea Chem® is an industry leader in the field of Phthalic anhydride, with over 10 years' experience. Having a particularly profound understanding of Phthalic anhydride and strong technical force, we are willing to share our technology and experience with

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Product Description

1. Product introduction of Phthalic anhydride

CAS : 85-44-9

HS: 29173500

Chemical Formula:C8H4O3

EINECS No.: 201-607-5

Molecular weight: 148.11

UN:2214 (CN:81631)

Melting point: 130.8℃

Boiling point: 284℃


Place of Origin:Shandong, China (Mainland)

Brand Name: Hosea Chem®

Appearance: White Flakes or Crystalline Powder

Another name: o-Phthalic anhydride, PA.

Phthalic anhydride is an organic compound, which is a cyclic anhydride formed by the intramolecular dehydration of phthalic acid.

Phenylanhydride(white solid), is an important raw material in chemical industry, especially used in the manufacture of plasticizers.

2. Product Parameter(Specification) of Phthalic anhydride







White Flakes or Crystalline Powder

White and Slightly other colors Flakes or Crystalline Powder

Molten Colour (PT-CO) 




Heat Colour(PT-CO) 




Sulphuric Acid Colour(PT-CO) 




Crystallization Point  




Purity  % 




Free Acid  /% 




According of Ins pection

GB/T 15336-2013 

3.Product Feature And Application of Phthalic anhydride

1) Phenylanhydride is one of the most important organic chemical raw materials, it’s main derivatives are dibutyl phthalate; Dioctyl ester and diisobutyl ester, used as plasticizer for PVC, etc.; It can also be used to produce unsaturated polyester resin; Alkyd resin; Dyes and pigments; A variety of paint; Food additive; Cathartic agent phenolphthalein in medicine; Iimine thiophosphorus in pesticides; Melasone and saccharin sodium.

2) This product is used as curing agent for epoxy resin.This product is an important organic chemical raw materials, mainly used in the production of phthalate esters plasticizer, paint, saccharin, dyes and organic compounds of important intermediates, insecticides, fungicides, rubber processing AIDS, photosensitive materials.

3) Used as an analytical reagent.Intermediates for organic synthesis. Dye industry for the preparation of anthraquinone, 2-chloroanthraquinone, 1, 4-dihydroxyanthraquinone and other important intermediates and phthalocyanine blue BS, phthalocyanine blue BX, phthalocyanine blue B and other dyes.

4) Used as curing agent of epoxy resin, reference dosage of 30 ~ 50 mass parts, 100g resin complex suitable period RT /6h, 120℃/1.5h.Curing conditions: 100/2H +150℃/5h or 100℃/12h, 140℃/8h, 200℃/6h.The curing heat is small, the curing material has good electrical properties and mechanical strength, and the thermal deformation temperature is 110 ~ 152℃.

5) It is an important organic chemical raw material. In the synthetic resin industry for the production of polyester resin, amino resin, unsaturated polyester resin, alkyd resin and so on.Dye industry for the preparation of anthraquinone, chloranthracene dihydroxyl anthraquinone dye intermediates and phthalocyanine blue BS, phthalocyanine blue BX, phthalocyanine blue B and other dyes.Plastics industry for the preparation of dibutyl phthalate, dioctyl phthalate and their mixed esters and other plasticizers. It is also an important intermediate in the manufacture of a variety of drugs, paints and organic compounds.

6) Used for the manufacture of plasticizers, dibutyl phthalate, resins and dyes, etc.

4. Product Details of Phthalic anhydride

Phthalic anhydride(PA) is insoluble in cold water, soluble in hot water, ethanol, ethyl ether, benzene and other organic solvents.

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5.Product Qualification of Phthalic anhydride 

With the best prices, good quality, and good service, Hosea Chem® Phthalic anhydride are highly recognized and praised by our customers. Meantime, we provide technical support of each product and marketing competition survey to help customers further enlarge their business easily.
Sampling is conducted every 2 hours and testing for ensuring the quality . 
3rd party inspection can be arranged when loading the container.

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6.Deliver, Shipping And Serving of Phthalic anhydride

25kgs bag, 500kgs jumbo bag  18mts/20'FCL.

Storage: Store sealed and cool.

Delivery Detail: 2 weeks after confirm order.

Shipping: by sea.

Ⅰ. over 10 years of export trading experience.
Ⅱ. 7x24 hours custome service, help you to solve your questions anytime you want.
Ⅲ. Arrange the orders and shipping with cus requests in time, According to the different countries export policy provide complete customs clearance documents.
Ⅳ. Provide a price trend, ensure the clients can know about marketing informations in time.
Ⅴ. Fast response, fast service .Emails will be replied in 12 hours. Ensure your questions will be answered in time.

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Q1.What's the payment terms?
T/T or L/C.

Q2.What's the shelf life for the cargos?
Our product's shelf life is 2 years, which is based on dry and ventilated storage.

Q3.What's the delivery time?
We usually deliver the cargos within 10~25 days after receiving customer's prepayment and original LC.

Q4.What documents can we supply?
Commercial Invoice, Packing List, Certificate of analysis, Certificate of Origin, Health Certificate issued by CIQ with embassy legalized, Bill of Loading etc. 
The documents will be sent by Express within 24 hours against your full payment. 

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