ICSC 1254 - AMMMONIUM BISULFITE

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AMMMONIUM BISULFITE	ICSC: 1254 (December 2022)
Ammonium monosulfite Sulfurous acid, monoammonium salt Ammonium hydrogen sulfite Ammonium bisulfite solution Ammonium acid sulfite Ammonium hydrosulfite

CAS #: 10192-30-0

UN #: 2693 (bisulfites, aqueous solution)

EC Number: 233-469-7

	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 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 (not if powder).	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 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 Harmful to aquatic life Transportation UN Classification UN Hazard Class: 8; UN Pack Group: III
STORAGE
Separated from strong oxidants, acids and food and feedstuffs. Well closed.
PACKAGING
Do not transport with food and feedstuffs.

AMMMONIUM BISULFITE

ICSC: 1254

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-YELLOW LIQUID OR CRYSTALS WITH CHARACTERISTIC ODOUR. Physical dangers Chemical dangers Decomposes on contact with acids. This produces toxic fumes including sulfur oxides, nitrogen oxides and ammonia. Reacts violently with oxidants. This generates fire hazard. The substance is a weak acid. Attacks many metals in the presence of water.	Formula: H₅NO₃S/NH₄HSO₃ Molecular mass: 99.1 Sublimation point: 150°C Boiling point at 101.1kPa: 100°C Melting point: -10°C Relative density (water = 1): 2.0 Solubility in water, g/100ml at 10°C: 267 (very good)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID OR CRYSTALS WITH CHARACTERISTIC ODOUR.

Physical dangers

Chemical dangers
Decomposes on contact with acids. This produces toxic fumes including sulfur oxides, nitrogen oxides and ammonia. Reacts violently with oxidants. This generates fire hazard. The substance is a weak acid. Attacks many metals in the presence of water.

Formula: H₅NO₃S/NH₄HSO₃
Molecular mass: 99.1
Sublimation point: 150°C
Boiling point at 101.1kPa: 100°C
Melting point: -10°C
Relative density (water = 1): 2.0
Solubility in water, g/100ml at 10°C: 267 (very good)

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 eyes, skin, 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 eyes, skin, 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

ENVIRONMENT
The substance is harmful to aquatic organisms.

NOTES
Mainly sold as aqueous solution. Health effects of exposure to the substance have not been investigated. Due to lack of specific data on this substance, the information included in this card was derived by analogy with sodium bisulfite. See ICSC 1134.

ADDITIONAL INFORMATION

EC Classification
Symbol: Xi; R: 31-36; S: 26-28-39-46

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