Hanson Chemicals

Maleic Anhydride Briquettes

Formula: C₄H₂O₃
CAS Number: 108-31-6
EC Number (EINECS): 203-571-6
HS Code: 29171400
UN Number: 2215
IUPAC Name: Furan-2,5-dione
Also Known As: 2,5-Furandione; Cis-Butenedioic Anhydride
Molecular Weight, g/mol: 98.06

Typical Specifications

Appearance: White to off-white briquettes / flakes
Odor: Pungent, acrid (similar to acetic acid)
Melting Point, °C: 52–56
Boiling Point, °C: 202 (sublimes)
Density, g/cm³ (at 20°C): 1.48
Flash Point, °C: 102 (closed cup)
pH (1% solution): ~1.5–2.0
Purity, %: ≥99.5
Grades Available: Briquettes, Molten, Flake
Packaging: 25kg bags, 500kg jumbo bags, molten bulk

Applications / Uses

Primary Applications

  • Production of unsaturated polyester resins (UPR) for fiberglass-reinforced plastics

  • Raw material for copolymers (styrene–maleic anhydride, ABS, etc.)

  • Intermediate for agricultural chemicals and coatings

Secondary Applications

  • Used in manufacture of lubricating oil additives

  • Crosslinking agent in paper sizing and textile treatments

  • Raw material for fumaric acid, malic acid, and succinic acid

End Industries Served: Plastics, Resins, Construction, Automotive, Agriculture, Coatings, Lubricants

Safety & Handling Information

Hazard Class (GHS): Flammable solid (Category 4), Acute Toxicity (Category 4), Skin Corrosive/Irritant (Category 2), Respiratory Sensitizer (Category 1)

Hazard Statements (H-Codes):

  • H302: Harmful if swallowed

  • H315: Causes skin irritation

  • H317: May cause allergic skin reaction

  • H318: Causes serious eye damage

  • H334: May cause allergy or asthma symptoms if inhaled

  • H335: May cause respiratory irritation

Precautionary Statements (P-Codes):

  • P261: Avoid breathing dust/fumes/vapors

  • P280: Wear protective gloves, protective clothing, eye/face protection

  • P302 + P352: IF ON SKIN – wash with plenty of water

  • P304 + P340: IF INHALED – remove person to fresh air, keep comfortable for breathing

Storage Conditions

  • Store in a cool, dry, well-ventilated area

  • Keep container tightly closed

  • Protect from moisture (hydrolyzes to maleic acid)

  • Avoid heat and ignition sources

Transport Information

  • ADR/RID: Class 8, UN2215, PG III

  • IMDG: Class 8, UN2215, PG III

  • IATA: Class 8, UN2215, PG III

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