Phthalic Anhydride (PA), commonly known as phthalic anhydride, is one of the important basic organic chemical raw materials. Phthalic anhydride is mainly used in the production of phthalic anhydride ester plasticizers, of which dioctyl phthalate (DOP), dibutyl phthalate (DBP) accounted for the largest proportion of demand, phthalic anhydride is also the production of alkyd resin and amino resin coating raw materials, in addition, Phthalic anhydride can also be widely used in the production of unsaturated polyester resin, anthraquinone, phosphorous imide, saccharin, phenolphthalein laxative and other products.



PRODUCT | PHTHALIC ANHYDRIDE (N-Based) | |||
OPERATIVE | GB/T 15336-2013 | |||
NO. | CHECK ITEM | QUALITY INDEX | RESULTS | |
1 | Appearance | White needle shaped crystals or flake-shaped crystals | White flake- shaped crystals | |
2 | Fused chroma (Chroma No.) | ≤20 | 10 | |
3 | Chroma of thermal stability (Chroma No.) | ≤50 | 40 | |
4 | Chroma of sulphuric acid (Chroma No.) | ≤40 | 20 | |
5 | Crystallization point ºC | ≥130.5 | 130.7 | |
6 | Purity/% | ≥99.50 | 99.98 | |
7 | Free acid (Mass fraction)% | ≤0.20 | 0.027 |
PRODUCT | PHTHALIC ANHYDRIDE ( OX-Based) | |||
OPERATIVE | GB/T 15336-2013 | |||
NO. | CHECK ITEM | QUALITY INDEX | RESULTS | |
1 | Appearance | White needle shaped crystals or flake-shaped crystals | White flake- shaped crystals | |
2 | Fused chroma (Chroma No.) | ≤20 | 10 | |
3 | Chroma of thermal stability (Chroma No.) | ≤50 | 30 | |
4 | Chroma of sulphuric acid (Chroma No.) | ≤40 | 20 | |
5 | Crystallization point ºC | ≥130.5 | 130.7 | |
6 | Purity/% | ≥99.50 | 99.98 | |
7 | Free acid (Mass fraction)% | ≤0.20 | 0.029 |



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.
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24 hours quick response. Professional after sales service to assure the customer satisfaction.
Q: Can I get some samples?
Yes, we welcome sample order for you to test and check our quality. Send me your requirements of the product you need. We support free sample.
Q: How to confirm the product quality before placing orders?
We support the sample delivery before shipment. or arrange SGS inspection before loading.
Q: What is your MOQ?
Our MOQ is 1 bag.
Q: What kind of package do you have?
We support 25kg bag, 500kg bag, and 1000kg bag.
Q :Which kind of payment terms do you accept?
We have flexible payment term liek TT, LC, DP, OA and etc.
Q: How about your delivery? How long is your delivery time?
Propmpt delivery if we have stock at our warehouse. Usually it will take 1 week for normal cargo, and 2 weeks for DG.