Molekula
Maleic anhydride
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Maleic anhydride is an organic compound belonging to the family of cyclic anhydrides, widely used in the production of unsaturated polyester resins, agricultural chemicals, and as a chemical intermediate in pharmaceuticals and coatings. It is also employed in the synthesis of 1,4-butanediol and in the production of alkenyl succinic anhydrides used as lubricant additives and paper sizing agents. Maleic anhydride has a CAS number of 108-31-6, with the molecular formula C4H2O3 and a molecular weight of 98.057 g/mol. It is stored at ambient temperatures and classified with the signal word "Danger" due to its hazardous properties. Molekula supplies maleic anhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 kg — $115.90 per pack
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to light yellow crystalline powder |
| Colour | ≤ 25 Hazen |
| Assay | ≥ 99.5% |
| Iron (Fe) | ≤ 5ppm |
| Identification (IR) | Conforms to Reference |
| Solidification Point | ≥ 52.5°C |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 103 °C |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless needles or white lumps or pellets |
| Odour | Pungent odor |
| Melting Point | 52.56 °C |
| Boiling Point | 202 °C |
| Solubility (other solvents) | Soluble in water, forming maleic acids |
| Vapour Pressure | 21 Pa at 20 °C |
| log P (octanol/water) | 1.62 |
Source: PubChem CID 7923 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 89966900 |
| CAS Number | 108-31-6 |
| IUPAC Name | furan-2,5-dione |
| EC Number | 203-571-6 |
| Molecular Formula | C4H2O3 |
| Molecular Weight | 98.057 |
| Exact Mass | 98.0004 |
| SMILES | C1=CC(=O)OC1=O |
| InChIKey | FPYJFEHAWHCUMM-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H |
| PubChem CID | 7923 |
| UN Number | UN2215 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29171410 |
| Tariff Code | 2917140000 |
Safety & GHS
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Corrosive
GHS05
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Toxic
GHS06
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Serious Health Hazard
GHS08
Hazard statements
- EUH071 Corrosive to the respiratory tract
- H301 Toxic if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H330 Fatal if inhaled
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H372 Causes damage to organs through prolonged or repeated exposure
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2,5-Furandione
- 2,5-Furanedione
- Anhydrid kyseliny maleinove
- cis-Butenedioic anhydride
- Dihydro-2,5-dioxofuran
- furan-2,5-dione
- Maleic acid anhydride
- Maleinanhydrid
- RCRA waste number U147
- Toxilic anhydride
Frequently asked questions
What is maleic anhydride used for?
Maleic anhydride is primarily used in the production of unsaturated polyester resins, alkyd resins, and copolymers for applications in coatings, adhesives, and plastics.
What is the chemical formula and molecular weight of maleic anhydride?
The chemical formula is C4H2O3, and the molecular weight is 98.057 g/mol.
How should maleic anhydride be stored?
Maleic anhydride should be stored at ambient temperature in a dry, well-ventilated area, away from moisture and incompatible materials.
What grade of maleic anhydride does Molekula supply?
Molekula supplies maleic anhydride in technical grade, suitable for industrial applications.
Can Molekula supply maleic anhydride in bulk?
Yes, Molekula can supply maleic anhydride in bulk quantities; please contact our sales team for pricing and logistics.
What documentation comes with a maleic anhydride order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS), compliant with GHS standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.