ICSC 1175 - POTASSIUM METABISULFITE

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POTASSIUM METABISULFITE	ICSC: 1175 (May 2018)
Potassium pyrosulfite Dipotassium disulfite

CAS #: 16731-55-8

EC Number: 240-795-3

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Shortness of breath. Wheezing.	Use local exhaust or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes	Redness. Pain. Burns.	Wear face shield or eye protection in combination with breathing protection.	Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention.
Ingestion	Abdominal pain. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. Then store and dispose of according to local regulations.	According to UN GHS Criteria Causes serious eye damage Transportation UN Classification
STORAGE
Cool. Dry. Well closed. Separated from acids and strong oxidants. Keep in a well-ventilated room.
PACKAGING

POTASSIUM METABISULFITE

ICSC: 1175

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance WHITE CRYSTALLINE POWDER WITH PUNGENT ODOUR. Physical dangers Chemical dangers Decomposes on heating and on contact with acids. This produces sulfur oxides. Reacts with acids and strong oxidants. This generates fire hazard. The substance is a weak acid. Attacks metals.	Formula: K₂S₂O₅ Molecular mass: 222.3 Decomposes at 150°C Relative density (water = 1): 2.34 Solubility in water, g/100ml at 25°C: 49.5 (good)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER WITH PUNGENT ODOUR.

Physical dangers

Chemical dangers
Decomposes on heating and on contact with acids. This produces sulfur oxides. Reacts with acids and strong oxidants. This generates fire hazard. The substance is a weak acid. Attacks metals.

Formula: K₂S₂O₅
Molecular mass: 222.3
Decomposes at 150°C
Relative density (water = 1): 2.34
Solubility in water, g/100ml at 25°C: 49.5 (good)

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 corrosive to the eyes. The substance is irritating to the skin, respiratory tract and gastrointestinal tract. Exposure could cause asthma-like reactions or urticaria in sensitive persons.	Inhalation risk Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of long-term or repeated exposure Repeated or prolonged inhalation may cause asthma-like symptoms. The substance may have effects on the skin.

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 corrosive to the eyes. The substance is irritating to the skin, respiratory tract and gastrointestinal tract. Exposure could cause asthma-like reactions or urticaria in sensitive persons.

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

Effects of long-term or repeated exposure
Repeated or prolonged inhalation may cause asthma-like symptoms. The substance may have effects on the skin.

OCCUPATIONAL EXPOSURE LIMITS

ENVIRONMENT
Environmental effects of the substance have been adequately investigated, but no significant effects have been found.

NOTES

ADDITIONAL INFORMATION

EC Classification
Symbol: Xi; R: 31-41; S: (2)-26-39

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