Hot Selling 99%Min CAS 108-31-6 Ma Maleic Anhydride for Dyeing Industry MFG Tengda, Jiangning, Shengyuan, etc.

• CAS No.: 108-31-6
• Formula: C4H2O3
• EINECS: 203-571-6
• Model NO.: Maleic Anhydride O1
• Type: Dyestuff Intermediates
• Appearance: Powder
• Quality: Industrial
• Colour: White
• Class: 8
• Purity: 99%Min
• Density: 1.48 g/cm3
• Boiling Point: 202 °c
• Vapor Pressure: 0.2 Mmhg (20°c)
• Flash Point: 102 °c
• Odor: Irritating, Choking
• Un No.: 2215
• Molecular Weight: 98.06
• Solubility in Water: Reacts
• Explosive Limits: 1.4%-7.1%
• Molar Mass: 98.057 G·mol−1
• Transport Package: Bag
• Specification: 25kg bag
• Trademark: Tengda, Shengyuan, Jiangning, Huifeng
• Origin: Shandong Province
• HS Code: 29171400
• Production Capacity: 50000tons/Year

Product Description

Hot  Selling
99%Min Maleic Anhydride  108-31-6 for Dyeing Industry

 

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.

 
 

 

PRODUCT NAME	Maleic anhydride	BATCH NO.	MA170302
Inspection Item	Measurement Unit	Qualified Result	Inspection Result
Appearance	White, briquettes
Purity (%)	≥	99.5	99.70
Molten color (APHA) (PT-CO)	≤	20	12
Solidification Point (oC)	--	52.4	52.55
ASH (%)	≤	0.003	0.002
IRON (PPM)	≤	5	0.30

Maleic anhydride is used in many applications.

Around 50% of world maleic anhydride output is used in the manufacture of unsaturated polyester resins (UPR). Chopped glass fibers are added to UPR to produce fiberglass reinforced plastics that are used in a wide range of applications such as pleasure boats, bathroom fixtures, automobiles, tanks and pipes.

Maleic anhydride is used in the production of thermoplastic polyurethanes, elastane/Spandex fibers, polybutylene terephthalate (PBT) resins and many other products.

Diels-Alder reaction of maleic anhydride and butadiene and isoprene gives the respective tetrahydrophthalic anhydrides which can be hydrogenated to the corresponding hexahydrophthalic anhydrides. These species are used as curing agents in epoxy resins. Another market for maleic anhydride is lubricating oil additives, which are used in gasoline and diesel engine crankcase oils as dispersants and corrosion inhibitors. Changes in lubricant specifications and more efficient engines have had a negative effect on the demand for lubricating oil additives, giving flat growth prospects for maleic anhydride in this application.

A number of smaller applications for maleic anhydride. The food industry uses malic acid which is derivative of maleic anhydride in artificial sweeteners and flavour enhancements. Personal care products consuming maleic anhydride include hair sprays, adhesives and floor polishes. Maleic anhydride is also a precursor to compounds used for water treatment detergents, insecticides and fungicides, pharmaceuticals, and other copolymers.

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.






Shandong Near Chemical Co.,Ltd  is located in the beautiful Yellow River Delta ,  the mouth of the Yellow River into the sea - Dongying City .  W ith 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 pharmac y , petroleum, animal husbandry, food processing, printing&dyeing, manufacturing industr ies      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  F ormamide,Isopropanol ,Toluene diisocyanate,Polyether  P olyol ,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,  C yclohexanone, Thiourea, Barium Carbonate, Aluminum Chloride, Calcium Nitrate, N-propanol, Methyl Ethyl Ketone, Methanol, Ethanol,  C yclohexane, 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-e ast, Asia and pacific area as well as Africa,we  have  establish ed  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 q uick and clear respond  to our customers all around the world . Professional and individual  after sale s  service  to assure the Customer satisfaction.
 

FAQ

1 Q:Are you manufacturer? A: As an integrated enterprise, we have our own production lines on Methylene Chloride, Chloroform and Aniline oil , meanwhile we are one of the experienced distributors for other chemicals such as cyclohexanone, Dimethyl Formamide, Propylene Glycol, Ethylene Glycol, Dimethyl Carbonate, Thiourea, Polyol, TDI, IPA, Ethanol etc .  W e have competitive price benefited by ready stock and good relations with some leading chemical  m anufacturers.

2 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 qualifi cation of the raw  material s . And we also have SOP loading system to ensure the safety and timely transportation.

3 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 .

4 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.

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 various of packages to meet needs of our customers,like Iron drums, plastic drums,  IBC  tank s, Flexitank, ISO TANK and bags etc.

7 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.

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 line s .
Generally it takes  14  days after deposit or original LC.

 

Main Product List

 

MAIN PRODUCT LIST

 

ITEM	CLASS	CAS.NO	UN NO.	HS CODE	PURITY	PACKAGE	FCL
Aniline	6.1	62-53-3	1547	29214110	99.95%	200KG*80drum ISO TANK	16tons/FCL 23tons/TANK
Methylene  chloride	6.1	75-09-2	1593	29031200	99.99%	270kg*80drum 250kg*80drum	21.6ton/FCL 20tons/FCL
Isopropyl alcohol  /  IPA	3	67-63-0	1219	29051220	99%	160kg*80drum	12.8tons/FCL
Ethanol	3	64-17-5	1170	22071000	95% , 96% , 99%	160kg*80drum 160*152drum	12.8tons/FCL 24.32tons/40'FCL
Potassium  hydroxide /KOH	8	1310-58-3	1813	28152000	90%	25kg*1000bag	25 tons/FCL
Maleic  anhydride	8	108-31-6	2215	29171400	99%	25kg*1000bag	25tons/FCL
Polyether	//	9082-00 - 2	//	39072090	99%	200kg*80drum	16tons/FCL
Toluene  diisocyanate /TDI TDI	6	584-84 - 9	2078	29291010	99%	250kg*80drum	20 tons/FCL
Cyclohexanone/CYC	3	108-94-1	1915	29142200	99.80%	190kg*80drum 190kg*132drum	15.2tons/FCL 25.08tons/40'FCL

 

ITEM	CLASS	CAS.NO	UN NO.	HS CODE	PURITY	PACKAGE	FCL
Methyl  acetate	3	79-20-9	1231	29153900	99.95%	180kg*80drum 180kg*132drum	14.4tons/FCL 23.76tons/40'FCL
Ethyl acetate /EA	3	141-78-6	1173	29153100	99.90%	180kg*80drum 180kg*132drum	14.4tons/FCL 23.76tons/40'FCL
butyl   acetate /BA	3	123-86-4	1123	29153300	99.70%	200kg*80drum 200kg*120drum	16tons/FCL 24tons/40'FCL
Glacia  acetic acid /GAA	8	64-19-7	2789	29152119	99.80%	30kg*740drum IBCdrum*20	22.2tons/FCL 20 tons/FCL
Caustic  so da flake/pearl	8	1310-73-2	1823	281511000	99.00%	25kg*1000bag 25kg*1080bag	26tons/FCL 22 28tons/FCL 25
Sodium hydroxide/caustic soda liquid	8	1310-73-2	1823	28151100	32% 50%	IBC*20 FLEXITANK	27ton/FCL
NITRILE BUTADIENE RUBBER  LATEX/NBRL	//		//	4002510000	44 %	23tons/flexitank IBCdrum*20	23tons/FCL 20 tons/FCL
Chloroform	6.1	67-66-3	1888	29031300	99.00%	300kg*80drum	24tons/FCL
Dimethyl formamide /DMF DMF	3.3	68-12-2	2265	29241910	99.95%	190kg*80drum	15.2tons/FCL
Dimethyl  carbonate /DMC	3.2	616-38-6	1161	29209000	99.93%	200kg*80drum	16tons/FCL

ITEM	CLASS	CAS.NO	UN NO.	HS CODE	PURITY	PACKAGE	FCL
Propylene  glycol/PG	//	57-55-6	//	29053200	99.50%	215kg*80drum 2 3 tons/ FK	17.2tons/FCL 2 3 tons/flexitank
Methyl  Ethyl  Ketone/MEK	3	78-93-3	1193	29141200	99.90%	165kg*80drum 165kg*144drum	13.2tons/FCL 23.76tons/40'FCL
N-propanol	3	71-23-8	1274	29051210	99%	165kg*80drum 165kg*148drum 18.5tons/ tank	13.2tons/FCL 24.42tons/FCL 18.5tons/TANK
Calcium nitrate  / Calcium salt	//	10124-37-5	//	28342990	99%	25kg*1000bag	25tons/FCL
Ethylene  Glycol  /MEG	//	107-21-1	//	29053100	99.95%	230kg*80drum 1100kg*18 IBC  25tons/ tank	18.4tons/FCL 19.8ton/FCL  25tons/TANK
Phenol	6.1	108-95-2	1671	29071110	99.9%	200KG*80drum	16tons/FCL 24tons/TK
Phthalic anhydride/PA	//	85-44-9	//	29173500	99.95%	25kg*8 8 0bag 25kg*1040bag	2 2  tons/FCL 26tons/40'FCL
Sodium sulfide (Y/R)	8	1313-82-2	1849	28301010	60%	25kg*880drum	22tons/FCL
Aluminum Chloride	8	7446-70-0	1726	28273200	99%	25kg*630drum 50kg*315drum	15.75tons/FCL
Sodium  hydrosulfide	8	16721-80-5	2949	28301090	70%	25kg*800bag	20 tons/FCL
Thiourea	9	62-56-6	2811	29309090	99%	25kg*800bag	20 tons/FCL
Methyl  Methacrylate  /  MMA	3	80-62-6	1247	2916140010	99.90%	190kg*80drum 22MT/ISO TAN	15.2ton/FCL 22ton

EPICHLOROHYDRIN /ECH /ECH	6.1	106-89-8	2023	2910300000	99.9%	240kg*80drum 25ton/ISO TAN K	19.2ton/20FCL  24ton/40FCL
D imethyl  S ulfoxide	//	67-68-5	//	2930300090	99.9%	2 25 KG*80drum	18ton/FCL
Cyclohexane	3	110-82-7	1145	29021100	99.95%	150kg*80 drum 150kg*160 drum	12tons/FCL 24tons/FCL
methyl alcohol	3	67-56-1	1230	29051100	99.9%	160 kg*8 0  drum	12.8ton/FCL
Trichloroethylene/TCE	6.1	79-01-6	1710	29032200	99.5%	280 kg*80 drum	22.4tons/FCL
Per chloroe thylene /PCE	6.1	127-18-4	1897	29032300	99.90%	300kg*80drum	24tons/FCL
Adipic Acid	//	124-04-9	//	29171210	99.8%	25kg*880 bags	22ton/FCL
Naphthalene	4.1	91-20-3	1334	29029020	99%	25kg*640 bags	16ton/FCL