Phthalic Anhydride PA For Resin Making
CAS No. 85-44-9
Purity：≥99.5%
Molecular Formula：C8H4O3
Phthalic anhydride can be used in the producing of plasticizer, alkyd resin, unsaturated polyester resin, dyes and pigments, insulating paints, fibreglass reinforced plastics and so on.
Parameter
Technical standard GB/T 15336-2013
Index name | Index | ||
Superior products | First-grade products | Qualified products | |
Appearance | White flake or crystalline powder | Scaly or crystalline powder with other colors | |
Molten chroma ≤ | 20 | 50 | 100 |
Thermal stability chroma ≤ | 50 | 150 | — |
Sulphuric acid chroma≤ | 40 | 100 | 150 |
Crystallization point, ℃ ≥ | 130.5 | 130.3 | 130.0 |
Purity,% ≥ | 99.5 | 99.5 | 99.5 |
Mass fraction of free acid,% ≤ | 0.20 | 0.30 | 0.50 |
Product Performance and Application
Phthalic anhydride, short as PA, a white scaly or crystalline powder. Its Molecular formula is C8H403, molecular weight is 148.12, melting point is 131.1l ℃, boiling point is 284.5 ℃, flash point is 151 ℃ (closed) and 165 ℃ (open), spontaneous ignition point is 584 ℃and density (solid) is 1.527g/cm3. It is insoluble in cold water and soluble in hot water, ethanol, ether, benzene and other organic solvents.
Phthalic anhydride is an important raw material in chemical industry, especially used in the manufacture of plasticizers like DBP and DOP etc. can also be used together with other materials in the manufacture of products like resin, paint, glass fiber reinforced plastics. At the same time, It also is the raw material of benzoic acid and terephthalic acid.
About the package
About the package, we have two kinds of packages for you,
1. 25kg small bag, it is more concient to use.
2. 500kg big bag, it is more economical.
Our Permise
In order to create a famous brand, improve the visibility of the enterprise, establish a corporate image. We are in the spirit of "all pursuit of high quality, user satisfaction for the purpose", with the principle of "the best price, the most thoughtful service, the most reliable quality" , we solemnly promise to you:
1. Product quality commitment:
① The manufacturing and testing of the products have quality records and testing data.
② For the testing of product performance, we do inspection of the product strictly in the whole process and full performance, and then box and ship after the products are confirmed to be qualified.
2. Product Price Commitment:
① In order to ensure the high reliability and advanced nature of the products, the system is selected from domestic or international high-quality famous brand devices.
② Under the same competition conditions, we sincerely provide you the most favorable price we can give.
3. Delivery time commitment:
Product delivery time: we can do the delivery as soon as the reception of full payment. If there are special circumstances, we will tell you in advance.
4. After-sales service commitment:
Service tenet : fast, decisive, accurate, thoughtful and thorough
Service objective: Service quality to win user satisfaction
FAQ
Q1: Are you the trading company or manufacturer ?
A: We are the manufacturer.
Q2: Can I get a free sample?
A: Yes, a sample less than 2 kg is free, you only need to pay the delivery cost.
Q3. What is your terms of payment?
A:We prefer TT, 30% as deposit, and 70% before delivery. but other ways is also negotiable.
Q4: How long is your delivery time?
A: We can do the delivery as soon as the payment.
Q5. Do you test all your goods before delivery?
A: Yes, we will test the product at least 3 times during the producing, And before delivery we will test it again.
