 Home > Organic Chemistry > Carboxylic Acids and Derivatives > Maleic anhydride for Sale > 99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized

99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized buy - large image1

99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized buy - image1

99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized buy - image2

99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized buy - image3

99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized buy - image4

99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized

Name: 99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized
Brand: jianxin
SKU: pr2607171351
Price: 700 USD
Availability: InStock

ISO FDA COA 217 Inquiries

Unit Price:

$700-850/MT FOB

Get Latest Price 

CAS No.:

108-31-6

Grade:

Industrial Grade

Content:

99.6%

Port:

shanghai

Brand:

jianxin

Packaging:

25kg/bag

Price valid (until):

2030-01-01

Contact Supplier

 Chat Now

Shanghai Jianqi Chemical Company

Company Type:

Trader

Location:

China

Qualification:

Main Products:

chemical raw materials

 Visit Store

Product Description
Seller Information
History Price
Inquiry History

Description

Product Detail

99.6% maleic anhydride (MA) with CAS number 108-31-6 is a core cyclic anhydride industrial intermediate specially customized for unsaturated polyester resin manufacturing, refined via continuous n-butane catalytic oxidation and multi-stage recrystallization purification technology. This high-activity raw material has become the mandatory foundational monomer for global composite material factories, coating workshops and fine chemical synthesis plants, occupying an irreplaceable position in UPR production chain.

Physically, the product presents neat white flaky or compact briquette crystals with obvious irritating sour odor. It features strong sublimation performance when heated above 60℃, dissolves rapidly in water to form maleic acid solution, and mixes freely with ethanol, acetone and other organic solvents. Its melting point stabilizes at 52.8℃, with low melting chroma index, which effectively avoids yellowing, turbidity and color deviation defects during high-temperature polycondensation of unsaturated resin.

The core value of maleic anhydride in unsaturated polyester resin production lies in its unique carbon-carbon double bond and anhydride functional groups. During esterification reaction with ethylene glycol, propylene glycol and other diols, MA introduces evenly distributed unsaturated active double bonds into polyester molecular chains. When mixed with styrene monomer and curing initiator, these double bonds trigger free radical cross-linking reaction to form rigid three-dimensional network structure, greatly improving finished resin’s tensile strength, bending resistance, heat deformation temperature and anti-corrosion performance. Our 99.6% resin-special grade strictly controls iron, ash and free acid impurities to ultra-low levels; excess trace metal impurities will suppress free radical activity, slow down resin curing speed and reduce finished product gloss, while our low-impurity MA guarantees stable curing cycle and consistent mechanical properties for mass continuous resin production.

Except for composite unsaturated resin, MA also supports multiple downstream industrial production lines. In coating manufacturing, it reacts with polyhydric alcohols to synthesize high-gloss alkyd resin for furniture paint and anti-rust industrial primer. In fine chemical factories, MA is the primary starting material to produce fumaric acid, malic acid, oil field scale inhibitors and lubricant viscosity modifiers. For papermaking enterprises, MA is used to prepare alkenyl succinic anhydride sizing agent, significantly lifting paper surface flatness and water repellency. It also serves as key intermediate for pesticide herbicide and plastic graft compatibilizer synthesis to enhance plastic alloy interfacial compatibility.

Purity ≥99.6%, low iron, ash and free acid impurities, stable esterification reaction performance for resin production
High unsaturation activity, sufficient double bond content, uniform cross-linking effect to enhance resin tensile strength & heat resistance
Low melting chroma, no yellowing after high-temperature polymerization, ensures transparent and bright resin finished products
Standard briquette packaging prevents deliquescence and caking during long-distance sea transportation
Strict n-butane oxidation production line, consistent batch indicators, complete COA, MSDS and dangerous goods documents
Targeted formula for UPR manufacturers, less by-product generation, lower production loss rate
Flexible supply: 25kg woven bag bulk orders and small trial samples with stable spot stock

Items	Specifications
Product Name	Maleic Anhydride (MA)
Appearance	White flake / briquette crystal
Package	25kg double-layer waterproof woven bag with inner PE liner

Shop 99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized-Detailed Image 1

ECHEMI Editorial Reference

Colorless needles, white lumps, or pellets with an irritating, choking odor.

Certificates

Basic Info

Product Name:

Maleic anhydride

Other Name:

2,5-Furandione;Maleic anhydride;cis-Butenedioic anhydride;Maleic acid anhydride;Toxilic anhydride;Dihydro-2,5-dioxofuran;BM 10;Nourymix MA 901;Crystal Man;Crystal Man AB;NSC 137651;NSC 137652;NSC 137653;NSC 9568;HG 3-993-76;M 188;2,5-Dihydrofuran-2,5-dione;SY-A;WS 8201;GR 216;A 1018;Baolilong A 1018;HA 59;184288-31-1;1190407-73-8;1229972-04-6;1380217-40-2

CAS No.:

108-31-6

UN No.:

2215

Molecular Formula:

C4H2O3

InChIKeys:

InChIKey=FPYJFEHAWHCUMM-UHFFFAOYSA-N

Molecular Weight:

98.05688

Exact Mass:

98.06

BRN:

106909

EC Number:

203-571-6

HScode:

2917140000

Categories:

Carboxylic Acids and Derivatives

Characteristics

PSA:

43.37000

XLogP3:

-0.37

Appearance:

White powder

Density:

1.48 g/cm³

Melting Point:

52.8 °C

Boiling Point:

202.0 °C @ Press: 760 Torr

Flash Point:

218 °F

Refractive Index:

1.515

Water Solubility:

H2O: 79 g/100 mL (25 ºC)

Storage Conditions:

Store at RT.

Vapor Pressure:

0.16 mm Hg ( 20 °C)

Vapor Density:

3.4 (vs air)

Toxicity:

Oral-rat LD50: 708 mg/kg; Oral-Mouse LD50: 2400 mg/kg

Flammability characteristics:

Flammable; spicy and irritating smoke is released from the fire

Explosive limit:

1.4-7.1%(V)

Odor:

Pungent odor

PH:

pH of water solutions: 2.42 at 1X10-2 M; 2.62 at 5X10-3 M; 3.10 at 1X10-4 M

See More Maleic anhydride Properties 

Hazard Identification

Classification of the substance or mixture

Acute toxicity - Category 4, Oral

Skin corrosion, Sub-category 1B

Serious eye damage, Category 1

Skin sensitization, Sub-category 1A

Respiratory sensitization, Category 1

Specific target organ toxicity â repeated exposure, Category 1

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Danger
Hazard statement(s)	H302 Harmful if swallowed H314 Causes severe skin burns and eye damage H317 May cause an allergic skin reaction H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H372 Causes damage to organs through prolonged or repeated exposure
Prevention	P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/... P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P284 [In case of inadequate ventilation] wear respiratory protection.
Response	P301+P317 IF SWALLOWED: Get medical help. P330 Rinse mouth. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P316 Get emergency medical help immediately. P321 Specific treatment (see ... on this label). P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P317 Get medical help. P302+P352 IF ON SKIN: Wash with plenty of water/... P333+P317 If skin irritation or rash occurs: Get medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P342+P316 If experiencing respiratory symptoms: Get emergency medical help immediately. P319 Get medical help if you feel unwell.
Storage	P405 Store locked up.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Dry. Separated from strong oxidants, strong bases and food and feedstuffs.Keep container tightly closed in a dry and well-ventilated place. Moisture sensitive. Storage class (TRGS 510): Non-combustible, corrosive hazardous materials

See More Maleic anhydride Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
chemical raw materials

Location:
Building 1, Unit 5, Room 313, Building L, No. 688 Qiushi Road, Jinshuiwei Town, Jinshan District, Shanghai

Average lead Time:
10

Total Annual Revenue:
$1 million-$2.5 million

Total Employees:
11-50

Year of Establishment:
2019
Weekly Price

 The chart shows the price trend of the product in the past 12 months.
Click 99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized price to view more maket price and ECHEMI analysis.

Inquiry History

217 Inquiries

Country	Product	Purchase Quantity	Date Posted
Japan	Inquiry for Maleic Anhydride (Biobased) – CAS No. 108-31-6	1 20' Fcl	Jan 23, 2026
India	Maleic Anhydride 108-31-6	250 MT	Oct 27, 2023
United States	Maleic Anhydride (molten) 99.6% CAS 108-31-6 YUSSEN	6000 MT	Sep 21, 2023
Egypt	maleic anhydride bulk 99% white powder CAS 108-31-6 C4H2O3 maleic anhydride	25 MT	Nov 1, 2023
Colombia	Maleic Anhydride	1 KG	Aug 26, 2025
United States	Maleic anhydride	100 TON	Jun 14, 2024
India	Maleic Anhydride (Molten)	20.00 KG	May 20, 2025
India	Maleic Anhydride (Molten)	200.00 KG	Jun 1, 2025
India	Maleic Anhydride (Molten)	30.00 KG	May 22, 2025
India	Maleic Anhydride (Molten)	10.00 KG	May 17, 2025
Pakistan	Maleic Anhydride	1.00 MT	Jul 30, 2024
India	Maleic Anhydride	20.00 MT	Feb 18, 2024
India	Maleic Anhydride	20.00 MT	Feb 21, 2024
India	Maleic Anhydride	1.00 MT	Feb 26, 2024
United Kingdom	Maleic Anhydride	1.00 MT	Nov 6, 2024
Austria	Maleic Anhydride (Molten)	100.00 KG	Jun 7, 2025
Qatar	Maleic Anhydride	40.00 TON	May 23, 2024
India	Maleic Anhydride	15.00 MT	Jan 31, 2024
Malaysia	MALEIC ANHYDRIDE	300 MT	Jan 29, 2025
India	Maleic Anhydride	25 MT	Aug 6, 2026

Go to Page

Post an enquiry for this product

More Choices Find All Products for Sale 

Product Name	Grade / Content	Price	Supplier Name	Details
Maleic Anhydride High quality TOP 1	Industrial Grade/99		Xi'an Wonder Energy Chemical Co.Ltd	Inquiry
Supplier Industrial Grade 99.5 Granule C4H2O3 108-31-6 Maleic Anhydride Price	Industrial Grade/99.5	$1300-1690/MT FOB	Mudanjiang Fengda Chemicals Imp.& Exp. Corp.	Inquiry
Maleic Anhydride 99.5%	Industrial Grade/99.5		shandong qifa	Inquiry
Maleic Anhydride (Polyurethanes)	Industrial Grade/		ECHEMI Chemical	Inquiry
Maleic Anhydride Briquet	Industrial Grade/99.5		QINGDAO EAST CHEMSOURCES TRADE CO.,LTD	Inquiry

Maleic anhydride Market Price

Hot Related Products



Feedback & Suggestions

Send Message

Thank you for your feedback. If you require further assistance, please contact us by email at info@echemi.com or call us at +86-532-55729510.

99.6% Min Maleic Anhydride MA CAS 108-31-6 White Flake Crystal Chemical Raw Material Specialized

Product Description

Seller Information

History Price