Maleic anhydride
Maleic anhydride (CAS: 108-31-6), a cyclic dicarboxylic anhydride with the formula C4H2O3 and a molecular weight of 98.06 g/mol, is a crucial organic building block. It presents as a white crystalline solid and is widely employed in the synthesis of polymers, resins, and agricultural chemicals. Its reactive nature makes it a versatile intermediate in various chemical manufacturing processes.
- IUPAC
- 2,5-Furandione
- Synonyms
- 2,5-Furandione
Unsaturated Polyester Resins (UPR)
Maleic anhydride is a primary raw material in the production of unsaturated polyester resins. These resins are extensively used in fibreglass-reinforced plastics for applications in automotive, marine, and construction industries due to their excellent mechanical properties and corrosion resistance.
Agricultural Chemicals
It serves as an intermediate in the synthesis of various agricultural chemicals, including pesticides and plant growth regulators. Its chemical structure allows for the introduction of specific functionalities necessary for crop protection and yield enhancement.
Copolymers and Additives
Maleic anhydride is used to create copolymers with other monomers, leading to materials with modified properties such as improved adhesion or dispersibility. It also functions as a precursor for lubricant additives and surfactants.
Fumaric Acid Production
Through isomerisation, maleic anhydride can be converted to fumaric acid, another important chemical intermediate used in the food, pharmaceutical, and polymer industries.
| Molecular weight | 98.06 |
|---|---|
| Empirical formula | C4H2O3 |
| Assay | ≥98.0% |
| Boiling point | 200 °C(lit.) |
| Vapour pressure | 0.16 mmHg (20 °C) |
| Vapour density | 3.4 (vs air) |
| Autoignition temp | 870 °F |
| Melting point | 51-56 °C(lit.) |
Hazard statements
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
- H317May cause an allergic skin reaction
- H334May cause allergy or asthma symptoms if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2215 8 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | C |
| Risk statements (R) | 22-34-42/43 |
| Safety statements (S) | 22-26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Maleic Anhydride used for?
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Maleic anhydride is a key intermediate used in the production of unsaturated polyester resins, agricultural chemicals, copolymers, lubricant additives, surfactants, and fumaric acid.
What is the CAS number and formula for Maleic Anhydride?
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The CAS number for Maleic Anhydride is 108-31-6, and its empirical formula (Hill notation) is C4H2O3.
What grade and purity does Tech Serve Solutions supply for Maleic Anhydride?
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Tech Serve Solutions supplies Maleic Anhydride with an assay of ≥98.0%. We do not represent this product as USP, BP, or EP grade unless explicitly stated, and it should be considered a technical or research grade.
What are the primary safety hazards associated with Maleic Anhydride?
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Maleic Anhydride carries GHS hazards including H302 (Harmful if swallowed), H314 (Causes severe skin burns and eye damage), H317 (May cause an allergic skin reaction), and H334 (May cause allergy or asthma symptoms or breathing difficulties if inhaled). It requires appropriate personal protective equipment, including respiratory protection and chemical-resistant gloves.
How is Maleic Anhydride packed, shipped, and exported by TSS?
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Maleic Anhydride is packed and shipped according to relevant regulations, such as UN 2215 8 / PGIII. TSS is a specialist global supplier and exporter of chemicals.
How can I request a quote or sample for Maleic Anhydride?
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To request a quote or a sample of Maleic Anhydride, please contact our sales team through the provided channels on our website.
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