ICSC 0638 - CALCIUM HYPOCHLORITE

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CALCIUM HYPOCHLORITE

ICSC: 0638
_{October 2005}

Hypochlorous acid, calcium salt
Calcium oxychloride

CAS No: 7778-54-3
RTECS No: NH3485000
UN No: 1748
EC No: 017-012-00-7

Ca(ClO)₂
Molecular mass: 143.0

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Not combustible but enhances combustion of other substances. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.	NO contact with combustibles and reducing agents.	NO powder. Water in large amounts.
EXPLOSION	Risk of fire and explosion on contact with acid(s), combustible substances, reducing agents.		In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		PREVENT DISPERSION OF DUST!
Inhalation	Burning sensation. Sore throat. Wheezing. Laboured breathing. Shortness of breath.	Local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness. Pain. Serious skin burns. Blisters.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain. Blurred vision. Severe deep burns.	Face shield 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	Abdominal pain. Burning sensation. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Give plenty of water to drink. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours. Chemical protection suit. Use face shield. Do NOT let this chemical enter the environment. Sweep spilled substance into air tight, dry containers, then remove to safe place.	O Symbol C Symbol N Symbol R: 8-22-31-34-50 S: (1/2-)26-36/37/39-45-61 UN Hazard Class: 5.1 UN Pack Group: II	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-51S1748 or 51GO2-I+II+III NFPA Code: H3; F0; R1	Well closed. Store in an area without drain or sewer access. Separated from food and feedstuffs. See Chemical Dangers.

IMPORTANT DATA

Physical State; Appearance
WHITE SOLID IN VARIOUS FORMS, WITH PUNGENT ODOUR.

Chemical dangers
The substance decomposes rapidly on heating above 175°C and on contact with acids producing chlorine and oxygen and causing fire and explosion hazard. The substance is a strong oxidant and reacts violently with combustible and reducing materials. The solution in water is a medium strong base. Reacts violently with ammonia, amines nitrogen compounds and many other substances, causing explosion hazard. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001). Attacks plastic.

Occupational exposure limits
TLV not established.
MAK not established.

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

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

Effects of short-term exposure
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of decomposition products of the substance may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Melting point (decomposes): 100°C Density: 2.35 g/cm³ Solubility in water, g/100 ml at 25°C: 21	The substance is very toxic to aquatic organisms.

NOTES

Rinse contaminated clothes (fire hazard) with plenty of water.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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