International Chemical Safety Cards

MALEIC ACID ICSC: 1186
MALEIC ACID
(Z)-Butanedioic acid
cis-1,2-Ethylenedicarboxylic acid
Malenic acid
C4H4O4/HOOHCH=CHCOOH
Molecular mass: 116.1
CAS # 110-16-7
RTECS # OM9625000
ICSC # 1186
UN # 1759
EC # 607-095-00-3
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, water spray, foam, carbon dioxide.
EXPLOSION


 
EXPOSURE
PREVENT DISPERSION OF DUST!

INHALATION Cough. Laboured breathing.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
SKIN Redness. Skin burns.
Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
EYES Redness. Pain. Blurred vision.
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 take to a doctor.
INGESTION Burning sensation (further see Inhalation).
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Rest.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Sweep spilled substance into containers. Wash away remainder with plenty of water (extra personal protection: P2 filter respirator for harmful particles).
Separated from food and feedstuffs. Dry.
Do not transport with food and feedstuffs.
Xi symbol
R: 22-36/37/38
S: 26-28-37
UN Hazard Class: 8
UN Packing Group: III
SEE IMPORTANT INFORMATION ON BACK
ICSC: 1186 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

MALEIC ACID ICSC: 1186

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PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALS.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating and on burning producing highly irritating fumes (maleic anhydride). The solution in water is a medium strong acid.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

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 SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the kidneys.
PHYSICAL
PROPERTIES
 Decomposes below boiling point at 135°C
Melting point: 131°C
Relative density (water = 1): 1.59
 Solubility in water: good (44 g/100 ml at 25°C)
Relative vapour density (air = 1): 4
ENVIRONMENTAL
DATA
NOTES

 

ADDITIONAL INFORMATION


ICSC: 1186 MALEIC ACID
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.