ICSC 1186 - MALEIC ACID

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MALEIC ACID	ICSC: 1186 (November 2019)
(Z)-Butenedioic acid cis-1,2-Ethylenedicarboxylic acid

CAS #: 110-16-7

UN #: 3261 (n.o.s.)

EC Number: 203-742-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use water spray, powder, foam, carbon dioxide.

PREVENT DISPERSION OF DUST! STRICT HYGIENE!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Laboured breathing.	Use local exhaust or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness. Pain.	Protective gloves. Protective clothing.	Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain. Blurred vision.	Wear safety goggles or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Burning sensation. Further see Inhalation.	Do not eat, drink, or smoke during work.	Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water.	According to UN GHS Criteria May be corrosive to metals Harmful if swallowed or in contact with skin Causes skin and eye irritation May cause an allergic skin reaction May cause respiratory irritation Toxic to aquatic life Transportation UN Classification UN Hazard Class: 8; UN Pack Group: III
STORAGE
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Dry. Store only in original packaging.
PACKAGING
Do not transport with food and feedstuffs.

MALEIC ACID

ICSC: 1186

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance WHITE CRYSTALS. Physical dangers Chemical dangers Decomposes on heating and on burning. This produces highly irritating fumes including maleic anhydride. The solution in water is a medium strong acid.	Formula: C₄H₄O₄ / HOOCCH=CHCOOH Molecular mass: 116.1 Decomposes at 135°C Melting point: 131°C Relative density (water = 1): 1.59 Solubility in water, g/100ml at 25°C: 78 (soluble) Vapour pressure, Pa at 25°C: 0.0048 Flash point: 127°C Octanol/water partition coefficient as log Pow: -0.5

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALS.

Physical dangers

Chemical dangers
Decomposes on heating and on burning. This produces highly irritating fumes including maleic anhydride. The solution in water is a medium strong acid.

Formula: C₄H₄O₄ / HOOCCH=CHCOOH
Molecular mass: 116.1
Decomposes at 135°C
Melting point: 131°C
Relative density (water = 1): 1.59
Solubility in water, g/100ml at 25°C: 78 (soluble)
Vapour pressure, Pa at 25°C: 0.0048
Flash point: 127°C
Octanol/water partition coefficient as log Pow: -0.5

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation and by ingestion. Effects of short-term exposure The substance is severely irritating to the eyes. The substance is irritating to the skin and respiratory tract.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. Effects of long-term or repeated exposure Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion.

Effects of short-term exposure
The substance is severely irritating to the eyes. The substance is irritating to the skin and respiratory tract.

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered.

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

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
The substance is toxic to aquatic organisms.

NOTES

ADDITIONAL INFORMATION

EC Classification

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