China Wholesale CAS No. 108-31-6 Maleic Anhydride / Ma with The Best Price and Ready Stock

• CAS No.: 108-31-6
• Formula: C4H2O3
• EINECS: 203-571-6
• Type: Dyestuff Intermediates
• Appearance: Crystal
• Quality: Industrial
• Model NO.: Industrial Grade
• Colour: White
• Water-Soluble Form: Clear Colorless
• Melting Point (ºC): >52
• Purity (%): >99.5
• Dissolution Test (Hazen): <20
• Iron (%): <0.0005
• Un No.: 2215
• Ash Content: 0.005 Max.
• Applications: Unsaturated Polyester Resins, Malic Acid, Paint, I
• Transport Package: Packed in 25kg Bags
• Trademark: Tengda
• Origin: China
• HS Code: 29171400
• Production Capacity: 600000

Product Description

 China Wholesale CAS No. 108-31-6 Maleic Anhydride / MA with the best price and ready stock

Product Description

Maleic anhydride is an organic compound with the formula C₂H₂(CO)₂O. It is the acid anhydride of maleic acid. It is a colorless or white solid with an acrid odor. It is produced industrially on a large scale for applications in coatings and polymers.
Maleic anhydride is produced by vapor-phase oxidation of n-butane. The overall process converts the methyl groups to carboxylate and dehydrogenates the backbone. The selectivity of the process reflects the robustness of maleic anhydride, with its conjugated double-bond system. Traditionally maleic anhydride was produced by the oxidation of benzene or other aromatic compounds. As of 2006, only a few smaller plants continue to use benzene.

C₄H₁₀ + 3.5 O₂ → C₄H₂O₃ + 4 H₂O H = −1236 kJ/mol

The main competing process entails full combustion of the butane, a conversion that is twice as exothermic as the partial oxidation.

The traditional method using benzene became uneconomical due to the high and still rising benzene prices and by complying with the regulations of benzene emissions. 

 

Product Parameters

 

Item	Specifications	Results
Appearance	White, light yellow lump or lamellae	White flaky crystal
Assay (%)	≥99.5	99.7
Chromaticity(Pt-Co)	≤25	21
Crystallization point ºC	≥52	52.4
Residue on ignition %	≤0.005	0.002
Content of Fe (mg/g)	≤3	---
Conclusion	The results conforms with Specification  GB/T 3676-2008

 

 

Detailed Photos

Packaging & Shipping

We have various of packages for different products and we are always pleased to satisfy customers'
request.

Packaging:
25kg*1000bags,25ton/FCL;

Shipping:
Promote shipping usually 7--14 days after receiving TT deposit or Original LC.

 

Certifications

Company Profile

Shandong Near Chemical Co.,Ltd is located in the beautiful Yellow River Delta, the mouth of the Yellow River into the sea-Dongying City. With a registered capital of 30 million yuan, it was founded in 2011 and has grown rapidly with total assets 180 million yuan and 100 employees. Near Chemical is a comprehensive service company focusing on import & export of chemicals and domestic trade. We are integrating rich chemical resources along with individual customized services for all global clients.

Our Advantages

FAQ

1 Q: How can you guarantee your quality?
A: Our factory owns mature production line under EPR quality system. We can guarantee the stab ility and qualification of the raw materials . And we also have SOP loading system to ensure the safety and timely transportation.

2 Q: Can I get some samples?
A: Yes, we welcome sample order for you to test and check our quality. Send me your requirement s of the product you need. We can provide sample free of charge , and the express cost is on you .

3 Q: How to confirm the Product Quality before placing orders?
A : You can get free samples from us or taking our previous SGS Report s as reference or arrange SGS before loading.

4 Q: What is your MOQ?
A: Our MOQ is 20'FCL for each product.

5 Q: What kind of package do you have?
A: We have various of packages to meet needs of our customers,like Iron drums, plastic drums, IBC tank s, Flexitank, ISO TANK and bags etc.

6 Q :Which kind of payment terms do you accept?
A:We prefer TT, LC payment terms. Other payment terms are flexible to be further discussed.

7 Q:Can you give me a discount price?
A: Yes. It depends on your order qty.

8 Q: How about your delivery? How long is your delivery time?
A: Prompt and reliable delivery by professional shipping lines . Generally it takes 14 days after deposit or original LC.