International Chemical Safety Cards

CALCIUM OXIDE ICSC: 0409
CALCIUM OXIDE
Lime
Burnt lime
Quicklime
CaO
Molecular mass: 56.1
CAS # 1305-78-8
RTECS # EW3100000
ICSC # 0409
UN # 1910
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: all extinguishing agents allowed except water.
EXPLOSION


 
EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

INHALATION Burning sensation. Cough. Shortness of breath. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
SKIN Dry skin. Redness. Skin burns. Burning sensation. Pain.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
EYES Redness. Pain. Blurred vision. Severe deep burns.
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. Abdominal pain. Abdominal cramps. Vomiting. Diarrhoea.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Give nothing to drink. Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Sweep spilled substance into dry containers (extra personal protection: P2 filter respirator for harmful particles).
Separated from strong acids, organics, water, food and feedstuffs. Dry.
Do not transport with food and feedstuffs.
UN Hazard Class: 8
UN Packing Group: III
SEE IMPORTANT INFORMATION ON BACK
ICSC: 0409 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

CALCIUM OXIDE ICSC: 0409

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PHYSICAL STATE; APPEARANCE:
HYGROSCOPIC, WHITE CRYSTALLINE POWDER.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The solution in water is a medium strong base. Reacts with water generating sufficient heat to ignite combustible materials. Reacts violently with acids, halogens, metals.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: 2 ppm; mg/m3 (ACGIH 1996).
MAK: 5 ppm; mg/m3; (1996).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. Lungs may be affected by repeated or prolonged exposure to dust particles. The substance may cause ulceration and perforation of the nasal septum.
PHYSICAL
PROPERTIES
 Boiling point: 2850°C
Melting point: 2570°C
 Relative density (water = 1): 3.3-3.4
Solubility in water: reaction
ENVIRONMENTAL
DATA
N O T E S
Reacts violently with fire extinguishing agents such as water. Clumps of calcium oxide formed by reaction with moisture and proteins in the eye are difficult to remove by irrigation. Manual removal by a physician is necessary. NEVER pour water into this substance; when dissolving or diluting always add it slowly to the water.
Transport Emergency Card: TEC (R)-67
ADDITIONAL INFORMATION


ICSC: 0409 CALCIUM OXIDE
© 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.