25kg Bag CAS No 85-44-9 Purity 99.5% PA/Phthalic Anhydride for Plasticizer
Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics. Phthalic anhydride is an important chemical intermediate in the plastics industry from which are derived numerous phthalate esters that function as plasticizers in synthetic resins. Phthalic anhydride itself is used as a monomer for synthetic resins such as glyptal, the alkyd resins, and the polyester resins. Phthalic anhydride is also used as a precursor of anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescein, and xanthene dyes. Phthalic anhydride is used in the synthesis of primary amines, the agricultural fungicide phaltan, and thalidomide. Other reactions with phthalic anhydride yield phenolphthalein, benzoic acid, phthalylsulfathiazole (an intestinal antimicrobial agent), and orthophthalic acid.
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ITEM
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INDEX
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Top grade
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Result
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Appearance
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white scaly or crystalline powder
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Molten Chroma(Chroma no. )≤
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20
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15
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thermostable Chroma(Chroma no. )≤
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50
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11
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Chroma of vitriol(Chroma no. )≤
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60
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10
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crystallization point°C≥
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130.5
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130.3
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Purity(mass fraction)%≥
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99.8
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99.9
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Free acid(mass fraction)≤ %
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0.2
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0.01 |
Phthalic anhydride is used in the manufacture of unsaturated polyesters and as a curing agent for epoxy resins. When used as a pigment, it can be responsible for sensitization in ceramic workers.
We have type c 600kg bag,25kg bag ,500kg bag, we can also packing as your requirement.
W~ha~ts~Ap`p+86 18~56~1~73`~52~6`5
PTA IPA ADA
Ever century chemical is a professional manufacturer and global distributor of chemical products . Our factory is located in Zibo city, the most important chemical industry city of Northern China. We have two specialized warehouse located in Zibo and Qingdao City, covered an area of 5000 square meters, which could provide our customer one-stop chemical sourcing service : mixing, repacking, storing, and distributing etc .
Since the foundation, we not only produce by ourselves, we also have established long-term and firm business relationships with over 300 Chinese enterprises that are engaged in various fields, including paint manufacturing, PU, chemical producing, rubber and plasticizer etc.
Our company has strict management system and quality control. We are ISO 90001:2000, ISO 141001:2000 and SGS certified. Our customers spread in South America, Oceania, Africa, Europe, Middle-East and South East Asia. We are still opening and developing broader market.Depending on the advantages of self-produce, high quality products, competitive price,quick delivery and professional service, we win approval and trust of our clients all over the world.
1.One-stop service station for your whole industry.
We can provide mixing, repacking, storing service for you .
You can buy all of them from us for only one time , we will update the orders processing of all to you on time. We are pleasure to be your warehouse and purchase office in China .
2.Provide the most favorable solutions.
There are many Chinese and other international suppliers of each item , you don't need to inquiry over all of them , just tell us your requirement, we will match the most suitable products for you based on our domestic international resources. We also have a lot of imported resources in our warehouse.
3.Qualified Quality is the first condition for business.
Our company has strict management system and quality control. We are ISO 90001:2000, ISO 141001:2000 and SGS certified. -----Be honest, be sincere ,be your best consultant and supplier. We do the best as what we can, we tell you the truth what we can't reach, and providing sincere advice for you.
Question:
1.what is you payments?
Payment by T/T, ,L/C , DP
2. How to confirm the Product Quality?
1. You can get free samples for some products,only need to pay the shipping cost .
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 15 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 .
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Audited Supplier 
25kg Bag CAS No 85-44-9 Purity 99.5% PA/Phthalic Anhydride for Plasticizer
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