ICSC 1134 - SODIUM BISULFITE 38-40 % AQUEOUS SOLUTION

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SODIUM BISULFITE 38-40 % AQUEOUS SOLUTION	ICSC: 1134 (May 2018)
Sodium acid sulfite Sodium sulhydrate Sodium hydrogensulfite aqueous solution Sodium metabisulfite aqueous solution Monosodium sulfite Leucogen Hydrogen sulfite sodium Sulfurous acid, monosodium salt

CAS #: 7631-90-5

EC Number: 231-548-0

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. Risk of fire and explosion on contact with acids or oxidants.	NO contact with acids or strong oxidizing agents. NO contact with incompatible materials: See Chemical Dangers	In case of fire in the surroundings, use appropriate extinguishing media.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Shortness of breath. Wheezing.	Use ventilation.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness.	Protective gloves.	Rinse skin with plenty of water or shower.
Eyes	Redness.	Wear safety spectacles.	Rinse with plenty of water for several minutes (remove contact lenses if easily possible).
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: filter respirator for acid gases and vapours adapted to the airborne concentration of the substance. Collect leaking and spilled liquid in covered non-metallic containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Wash away remainder with plenty of water. Then store and dispose of according to local regulations.	According to UN GHS Criteria WARNING Harmful if swallowed Transportation UN Classification
STORAGE
Separated from acids, strong oxidants and food and feedstuffs. Well closed.
PACKAGING
Do not transport with food and feedstuffs.

SODIUM BISULFITE 38-40 % AQUEOUS SOLUTION

ICSC: 1134

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-YELLOW LIQUID WITH CHARACTERISTIC 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: NaHO₃S/NaHSO₃ Molecular mass: 104.06 Boiling point: 104°C Melting point: <-5°C Relative density (water = 1): 1.34 Vapour pressure, kPa at 20°C: 2.4 Viscosity: 3.64 mPa*s at 20°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID WITH CHARACTERISTIC 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: NaHO₃S/NaHSO₃
Molecular mass: 104.06
Boiling point: 104°C
Melting point: <-5°C
Relative density (water = 1): 1.34
Vapour pressure, kPa at 20°C: 2.4
Viscosity: 3.64 mPa*s at 20°C

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by ingestion. Effects of short-term exposure The substance is irritating to the skin, eyes, respiratory tract and gastrointestinal tract. Exposure could cause asthma-like reactions or urticaria in sensitive persons.	Inhalation risk No indication can be given about the rate at which a harmful concentration of this substance in the air is reached. 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 ingestion.

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

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached.

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
TLV: 5 mg/m³, as TWA; A4 (not classifiable as a human carcinogen)

ENVIRONMENT
This substance may be hazardous to the environment. Special attention should be given to water quality.

NOTES

ADDITIONAL INFORMATION

EC Classification
Symbol: Xn; R: 22-31; S: (2)-25-46; Note: B

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