99% Maleic Anhydride CAS 108-31-6 with Best Price in China

99% Maleic Anhydride CAS 108-31-6 with Best Price in China, Find details about China Maleic Anhydride, Ma from 99% Maleic Anhydride CAS 108-31-6 with Best Price in China

Model NO.
Maleic Anhydride 08
Colour
White
Trademark
Near Chem
Transport Package
25kg *1000 Bags, 25ton/FCL
Origin
China
HS Code
2917140000
Model NO.
Maleic Anhydride 08
Colour
White
Trademark
Near Chem
Transport Package
25kg *1000 Bags, 25ton/FCL
Origin
China
HS Code
2917140000

 

Basic Info

 
   Model NO.   CAS  108-31-6   Appearance   White Beiquettes
   Product name   Maleic Anhydrid   Purity   99%
   Trademark   Near Chem   HS Code   2917140000
   Origin   China   Specification    25kg/Bag
 

Product Description


             99% Maleic Anhydride CAS 108-31-6 with Best Price in China
 

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.

In both cases, benzene and butane are fed into a stream of hot air, and the mixture is passed through a catalyst bed at high temperature. The ratio of air to hydrocarbon is controlled to prevent the mixture from igniting. Vanadium pentoxide and molybdenum trioxide are the catalysts used for the benzene route, whereas vanadium phosphate is used for the butane route:

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. In addition, in the production of maleic anhydride (4 C-atoms) a third of the original carbon atoms is lost as carbon dioxide when using benzene (6 carbon atoms). The modern catalytic processes start from a 4-carbon molecule and only attaches oxygen and removes water; the 4-C-base body of the molecule remains intact. Overall, the newer method is therefore more material efficient.



Application:
 
99% Maleic Anhydride CAS 108-31-6 with Best Price in China

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.

In both cases, benzene and butane are fed into a stream of hot air, and the mixture is passed through a catalyst bed at high temperature. The ratio of air to hydrocarbon is controlled to prevent the mixture from igniting. Vanadium pentoxide and molybdenum trioxide are the catalysts used for the benzene route, whereas vanadium phosphate is used for the butane route:

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. In addition, in the production of maleic anhydride (4 C-atoms) a third of the original carbon atoms is lost as carbon dioxide when using benzene (6 carbon atoms). The modern catalytic processes start from a 4-carbon molecule and only attaches oxygen and removes water; the 4-C-base body of the molecule remains intact. Overall, the newer method is therefore more material efficient.




Specification:

 
CharacteristicsUnitsGuaranteed ValuesResults
Appearance White briquettesWhite briquettes
Purity(by MA)WT%99.5  min99.71
Molten ColourAPHA25  Max13
Solidifying PointºC52.5  Min52.5
AshWT%0.005 Max<0.001
IronPPM3  Max0.32
Maleic AcidWT%≤0.50.29


 

Packaging & Shipping


 25kg *1000 bags,25ton/FCL;
 25kg*800 bags,20ton/FCL(with pallets).


 Lead Time: 7--14 days after receiving deposit from buyer.

99% Maleic Anhydride CAS 108-31-6 with Best Price in China
 

Company Profile


99% Maleic Anhydride CAS 108-31-6 with Best Price in China

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 company adheres to the market-oriented, committing to exploring the diversified international market, as well as the principle of honesty and trustworthiness. The clients of Near Chemical always come first.
In the past decade, Near Chemical has established a stable and friendly partnership with thousands of customers over 60 countries and regions. We have spread wide range of chemicals in various fields such as pharmacy, petroleum, animal husbandry, food processing, printing&dyeing, manufacturing industries etc. Near Chemical now has warehousing, trading, public utilities ,property management and other comprehensive entities, and gradually develop to collectivization, internationalization and Industrialization. Our company has a good development prospect and unlimited potential future.
Our main production lines are including Methylene Chloride 30,000 tons/year, Maleic Anhydride 30,000 tons/year, Propylene Glycol 20,000 tons/year.  
Meanwhile, we specialized in offering the following chemicals: Aniline,Dimethyl Formamide,Isopropanol ,Toluene diisocyanate,Polyether Polyol,Polymer Polyol, Methyl Acetate, Ethyl Acetate, Butyl Acetate, Glacial Acetic Acid, Potassium Hydroxide, Nitrile Butadiene Rubber Latex, Caustic Soda, Dipropylene Glycol, Ethylene Glycol, Phenol, Phthalic Anhydride, Cyclohexanone, Thiourea, Barium Carbonate, Aluminum Chloride, Calcium Nitrate, N-propanol, Methyl Ethyl Ketone, Methanol, Ethanol, Cyclohexane, Dimethyl Carbonate,  Dichlorodifluoromethane, Dichlorofluoromethane, Trichloroethylene, Tetrachloroethylene, Epichlorohydrin, Sodium Hydroxide Liquid, etc.
We always carry out "quality first and service the best". 


Near Chemical, Near U, Warm the world.

 

Our Advantages

 

10 Years Experiences
Our products have been promoted to all over Europe,North&South America, Middle-east, Asia and pacific area as well as Africa,we have established long term cooperation with our clients.

Quality service
Adhering to the principle of "quality first,service the best" Near Chem insists on providing high quality chemicals based on a complete Quality Assurance System. Meanwhile,we use SOP system to guarantee our whole logistics.  Near Chem has built a mutual trust under honesty and integrity principles with customers all around the world.And will keep promoting our commitment to better a nearer Chem to the world.  
 
24 hour service
24 hours quick and clear respond to our customers all around the worldProfessional and individual after sales service to assure the Customer satisfaction.
 

FAQ


1 Q:Are you manufacturer?
A: Yes, We are the largest manufacture on Methylene Chloride, Chloroform and Aniline oil. And ready stock on cyclohexanone, Dimethyl Formamide, Propylene Glycol, Ethylene Glycol, Dimethyl Carbonate, Thiourea, Polyol, TDI, IPA, Ethanol etc.

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

3 Q: Can I get some samples?
  A:  Yes, we can supply samples free of charge, the courier shipping cost will be prepaid by customers.

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


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


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


7 Q :Which kind of payment terms do you accept?
A: TT, LC at sight/ LC 90/120days payment terms are acceptable. 

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

9 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.

 

99% Maleic Anhydride CAS 108-31-6 with Best Price in China