Maleic Anhydride
- CAS Number
- 108-31-6
- HSN Code
- 29171400
- Molecular Formula
- C4H2O3
- Catalogue Number
- AL2859
- Purity
- ≥ 99%
- Molecular Weight
- 98.06 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Maleic anhydride is a cyclic dicarboxylic anhydride that is the cyclic anhydride of maleic acid. It has a role as an allergen.
Also known as 2-Butenedioic anhydride.
- Catalogue No.
- AL2859
- CAS Number
- 108-31-6
- Molecular Formula
- C4H2O3
- Molecular Weight
- 98.06 g/mol
- HSN Code
- 29171400
- Grade
- 99% Extra Pure
- Product Form
- Substance
Melting point: 52.56 °C; Boiling point: 202.0 °C at 760 mm Hg; Flash point: 102 °C (closed cup); Density: 0.934 at 20 °C/4 °C; Solubility: In water: reaction with water.
- Appearance
- Orthorhombic needles from chloroform; commercial grades furnished in fused form, as briquettes
- Shelf Life
- 2 years
- Packaging
- Available in: 500 gm plastic bottle, 5 Kg plastic bottle
- Storage
- Fireproof. Store only in original container. Separated from strong oxidants, strong reducing agents and incompatible materials. Dry. Store in an area without drain or sewer access.
1.1 — Product identifier
- Chemical Name
- Maleic Anhydride
- Catalogue No.
- AL2859
- Product form
- Substance
- CAS Number
- 108-31-6
- EC Number
- 203-571-6
- Grade
- 99% Extra Pure
- EC Index Number
- 607-095-00-8
- Chemical Formula
- C4H2O3
- HSN Code
- 29171400
- Synonyms
- 2-Butenedioic anhydride
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Intermediate in the production of resins and other chemicals.
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.1 — Classification of the substance or mixture
- Classification according to Regulation (EC) No 1272/2008
- Acute Tox. 4; Skin Corr. 1B; Skin Sens. 1; Resp. Sens. 1
- Classification source
- ECHA C&L Inventory via PubChem CID 7923 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Corrosive, Irritant, Health Hazard
- Signal word
- Danger
- Hazard statements
- 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
2.3 — Other hazards
- Other hazards
- May cause respiratory irritation and skin burns.
3.1 — Substance
- Name
- Maleic Anhydride
- CAS No.
- 108-31-6
4.1 — Description of first aid measures
- First-aid measures after inhalation
- If this chemical has been inhaled, remove the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the person warm and at rest.
- First-aid measures after skin contact
- If this chemical contacts the skin, immediately wash the contaminated skin with soap and water. If this chemical penetrates the clothing, immediately remove the clothing, wash the skin with soap and water, and get medical attention promptly.
- First-aid measures after eye contact
- If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.
- First-aid measures after ingestion
- If this chemical has been swallowed, get medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Coughing, shortness of breath, skin irritation, and eye irritation.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Water stream or foam may cause frothing. Use dry chemical, carbon dioxide, or water spray.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Evacuate area and ventilate. Wear appropriate protective equipment. Contain spill and absorb with inert material.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. Then store and dispose of according to local regulations.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Use in a fume hood. Wear gloves and eye protection. Avoid inhalation and contact with skin.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Fireproof. Store only in original container. Separated from strong oxidants, strong reducing agents and incompatible materials. Dry. Store in an area without drain or sewer access.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use NIOSH-approved respirator if exposure limits are exceeded.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- White
- Odour
- Pungent odor
- Odour threshold
- Not specified
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- 52.56 °C
- Freezing point
- Not specified
- Boiling point
- 202.0 °C at 760 mm Hg
- Flash point
- 102 °C (closed cup)
- Auto-ignition temperature
- 477 °C
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Flammable solid
- Vapour pressure
- 2.5X10-1 mm Hg at 25 °C
- Relative vapour density at 20°C
- 3.38 (Air = 1)
- Density
- 0.934 at 20 °C/4 °C
- Solubility
- In water: reaction with water
- Log Pow
- 1.62
- Viscosity, kinematic
- Not specified
- Viscosity, dynamic
- Not specified
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not specified
10.1 — Reactivity
- Reactivity
- Reacts with water to form maleic acid; can polymerize under heat or in the presence of catalysts.
10.2 — Chemical stability
- Chemical stability
- Stable under normal laboratory storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- Decomposes on burning. This produces carbon monoxide (see ICSC 0023) and irritating or toxic fumes (or gases). The solution in water is a weak acid.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong oxidizers, bases, and amines.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Maleic anhydride decomposes exothermically, evolving carbon dioxide in the presence of dimethylamine, triethylamine, pyridine, or quinoline at temperatures above 150 °C.
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Guinea pig oral 390 mg/kg; LD50 Guinea pig dermal >20,000 mg/kg bw; LD50 Rabbit dermal 2620 mg/kg
- Skin corrosion/irritation
- H314: Causes severe skin burns and eye damage
- Serious eye damage/irritation
- Not classified (based on available data)
- Respiratory or skin sensitisation
- H317: May cause an allergic skin reaction; H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled
- Germ cell mutagenicity
- Not classified (based on available data)
- Carcinogenicity
- Not classified (based on available data)
- Specific target organ toxicity (single exposure)
- Not classified (based on available data)
- Specific target organ toxicity (repeated exposure)
- Not classified (based on available data)
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- UN 2215
- UN-No. (IMDG)
- UN 2215
- UN-No. (IATA)
- UN 2215
- UN-No. (ADN)
- UN 2215
- UN-No. (RID)
- UN 2215
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Maleic anhydride
- Proper Shipping Name (IMDG)
- Maleic anhydride
- Proper Shipping Name (IATA)
- Maleic anhydride
- Proper Shipping Name (ADN)
- Maleic anhydride
- Proper Shipping Name (RID)
- Maleic anhydride
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 8
14.4 — Packing group
- Packing group (ADR)
- III
- Packing group (IMDG)
- III
- Packing group (IATA)
- III
- Packing group (ADN)
- III
- Packing group (RID)
- III
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Used as the key monomer in unsaturated polyester resin and copolymer synthesis research.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL00940
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 98.06 g/mol
| Test | Standard | Observed |
|---|---|---|
| Description | Hard white tablets/crystals | Hard white tablets/crystals |
| Assay | (Min.) 99.0% | 99.29% |
| Melting point | 50 - 53°C | 53°C |
| Sulphated ash | <0.05% | <0.05% |
The above product complies with EP grade
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 99% Extra Pure | ≥ 99% | m.p. 52.56 °C; b.p. 202.0 °C at 760 mm Hg | ≤ 0.5% | ≤ 0.1% | None detected | In water: reaction with water |
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