ICSC 0799 - MALEIC ANHYDRIDE

MALEIC ANHYDRIDE	ICSC: 0799 (September 1997)
2,5-Furandione Dihydro-2,5-dioxofuran Maleic acid anhydride cis-Butenedioic anhydride

CAS #: 108-31-6

UN #: 2215

EC Number: 203-571-6

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Finely dispersed particles form explosive mixtures in air.	NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.	Use water spray, alcohol-resistant foam, carbon dioxide. NO powder.

STRICT HYGIENE! PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Burning sensation. Cough. Sore throat. Shortness of breath. Wheezing.	Use local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Refer for medical attention.
Skin	Dry skin. Redness. Pain. See Notes.	See Notes. Protective clothing.	First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again.
Eyes	Redness. Pain. Burns.	Wear safety goggles or eye protection in combination with breathing protection if powder.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Nausea. Abdominal pain. Burning sensation. Vomiting. Diarrhoea.	Do not eat, drink, or smoke during work.	Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: face shield, thermal gloves, chemical protection suit and particulate filter respirator adapted to the airborne concentration of the substance. See Notes. Sweep spilled substance into covered containers.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 8; UN Pack Group: III
STORAGE
Dry. Separated from strong oxidants, strong bases and food and feedstuffs.
PACKAGING
Airtight. Do not transport with food and feedstuffs.

MALEIC ANHYDRIDE

ICSC: 0799

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS OR WHITE CRYSTALS WITH PUNGENT ODOUR. Physical dangers Chemical dangers The solution in water is a medium strong acid. Reacts with strong bases and strong oxidants.	Formula: C₄H₂O₃ Molecular mass: 98.1 Boiling point: 202°C Melting point: 53°C Density: 1.5 g/cm³ Solubility in water: reaction Vapour pressure, Pa at 25°C: 25 Relative vapour density (air = 1): 3.4 Flash point: 102°C c.c. Auto-ignition temperature: 477°C Explosive limits, vol% in air: 1.4-7.1

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OR WHITE CRYSTALS WITH PUNGENT ODOUR.

Physical dangers

Chemical dangers
The solution in water is a medium strong acid. Reacts with strong bases and strong oxidants.

Formula: C₄H₂O₃
Molecular mass: 98.1
Boiling point: 202°C
Melting point: 53°C
Density: 1.5 g/cm³
Solubility in water: reaction
Vapour pressure, Pa at 25°C: 25
Relative vapour density (air = 1): 3.4
Flash point: 102°C c.c.
Auto-ignition temperature: 477°C
Explosive limits, vol% in air: 1.4-7.1

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. Effects of short-term exposure The substance is severely irritating to the eyes, skin and respiratory tract. Inhalation may cause asthma-like reactions.	Inhalation risk A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

Effects of short-term exposure
The substance is severely irritating to the eyes, skin and respiratory tract. Inhalation may cause asthma-like reactions.

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma.

OCCUPATIONAL EXPOSURE LIMITS
MAK: 0.081 mg/m³, 0.02 ppm; peak limitation category: I(1); sensitization of respiratory tract and skin (SAH); pregnancy risk group: C

ENVIRONMENT

NOTES
Reacts violently with fire extinguishing agents such as powder. Depending on the degree of exposure, periodic medical examination is suggested. The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact. Maleic anhydride is transported also as hot liquid (70°C); contact of the skin should be avoided. The odour warning when the exposure limit value is exceeded is insufficient.

NOTES

Reacts violently with fire extinguishing agents such as powder.
Depending on the degree of exposure, periodic medical examination is suggested.
The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Anyone who has shown symptoms of asthma due to this substance should avoid all further contact.
Maleic anhydride is transported also as hot liquid (70°C); contact of the skin should be avoided.
The odour warning when the exposure limit value is exceeded is insufficient.

ADDITIONAL INFORMATION

EC Classification
Symbol: C; R: 22-34-42/43; S: (2)-22-26-36/37/39-45

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    See Also:
       Toxicological Abbreviations