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Maleic acid anhydride

Price 600 INR/ Kilograms

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MOQ : 1 Kilogram

Maleic acid anhydride Specification

Density
1.480 Gram per cubic centimeter(g/cm3)

Ph Level
Acidic, pH ~2 (for aqueous solution of hydrolyzed acid)

HS Code
29171400

Shape
Flakes, Briquettes, or Lumps

Purity
99%

Taste
Irritant/acidic

Melting Point
52.8 C

Molecular Weight
98.06 g/mol

Smell
Pungent, choking odor

Solubility
Soluble in acetone, benzene, dioxane, and moderately soluble in water (hydrolyzes to maleic acid)

Form
Solid

Boiling point
202 C (decomposes)

Molecular Formula
C4H2O3

Structural Formula
OC=OCH=CHC=O

Poisonous
Yes

Classification
Organic chemical/Acid anhydride

Chemical Name
Maleic anhydride

Grade
Industrial Grade, Reagent Grade

Standard
Meets industrial and reagent standards

Type
Organic acid anhydride

Usage
Industrial, laboratory, chemical synthesis

Main Material
Maleic acid anhydride

Application
Used in the manufacture of unsaturated polyester resins, alkyd resins, pesticides, pharmaceuticals, copolymers, plasticizers, lubricating oil additives, and as a chemical intermediate.

Maleic acid anhydride Trade Information

Minimum Order Quantity
1 Kilogram

Supply Ability
1 Kilogram Per Week

Delivery Time
1 Week

About Maleic acid anhydride

Maleic acid anhydride

CAS No.          : 108-31-6

Other Names :    Maleic Anhydride briquettes

MF                 :    C35H49O29

EINECS No. :    203-571-6

Grade Standard    : Agriculture Grade

Purity            :     99.5%

Appearance :    Colorless Crystallization

Purity(by MAN)(%) : 99.5 min
Molten Color(APHA) (#) : 20 max
Solidifying point () : 52.4min
Ash (PPM) : 20 max
Iron (PPM) : 5 max

Key Chemical Characteristics

Maleic anhydride features a molecular formula of C4H2O3 and has a density of 1.480 g/cm3. The substance is moderately soluble in waterconverting to maleic acidand readily dissolves in acetone, benzene, and dioxane. It stands as a solid at room temperature, with a boiling point of 202C (decomposes) and a vapor pressure of 0.08 mmHg at 25C. Its acidic nature and pungent odor require careful handling during use.

Industrial Applications and Uses

This compound is critical in manufacturing unsaturated polyester resins and alkyd resins, widely used in plastics and coatings. It also serves as a precursor in pesticides, pharmaceuticals, copolymers, plasticizers, and lubricating oil additives. Its versatility as a chemical intermediate makes it invaluable in industrial and laboratory settings as well as for chemical synthesis.

Safe Handling, Storage, and Transport

Maleic anhydride must be handled with proper safety precautions due to its corrosive, irritating properties. Storage conditions should prevent contact with water, as reaction yields maleic acid. For transportation, it is classified as a Class 8 corrosive material (UN 2215, Packing Group II). Suitable for both industrial and reagent-grade requirements, compliance with standard regulatory protocols is essential for safety.

FAQs of Maleic acid anhydride:

Q: How should maleic acid anhydride be handled and stored safely?

A: Maleic acid anhydride should be handled with full personal protective equipment, including gloves, goggles, and suitable protective clothing, due to its corrosive and irritating nature. Store it in tightly closed containers, in a dry, well-ventilated area, away from moisture and water, as it reacts to form maleic acid. Emergency equipment and ventilation should be readily accessible.

Q: What are the main industrial uses and benefits of maleic acid anhydride?

A: Maleic acid anhydride is valued for its role in manufacturing unsaturated polyester resins and alkyd resins, essential for coatings, plastics, and composites. It is also important in producing pesticides, pharmaceuticals, copolymers, plasticizers, and additives for lubricating oils. Its chemical reactivity and versatility make it a key intermediate in various chemical syntheses.

Q: When and where is maleic acid anhydride typically used?

A: Maleic acid anhydride is widely used in industrial plants, chemical factories, and laboratories engaged in resin, pharmaceutical, or agrichemical production. It is typically employed during chemical synthesis processes or as a starting material in the manufacture of specialty products and intermediates.

Q: What are the hazards associated with maleic acid anhydride, and what precautions should be taken during transport?

A: This substance causes severe skin burns, eye damage, and respiratory irritation, and is harmful if inhaled or ingested. During transport, it must be classified and packed as a corrosive substance (Class 8, UN 2215, Packing Group II), with packaging that prevents leaks and exposure. Proper labeling and compliance with transport regulations are mandatory.

Q: How does maleic acid anhydride react with water and what is the process for its hydrolysis?

A: When maleic acid anhydride comes into contact with water, it undergoes hydrolysis to produce maleic acid. This reaction is exothermic and should be managed with care, as it can generate heat and potentially cause splashing or fume release. The process is used industrially to produce maleic acid from the anhydride.

Q: In what physical forms and purity grades is maleic acid anhydride supplied?

A: Suppliers offer maleic acid anhydride as white flakes, briquettes, or lumps with a purity of at least 99%. The product is available in both industrial and reagent grades, adhering to relevant standards, and is distributed, exported, and imported by manufacturers and chemical suppliers across India.

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