Ammonium sulfite monohydrate
- Diammonium sulfite monohydrate
- Sulfurous acid, diammonium salt, monohydrate
(NH4)2SO3 : H2O
Registry Numbers and Inventories.
Melting point, °C
Boiling point, °C
1.41 g/cm3 (20 C)
Hazards and Protection.
Keep container tightly closed.
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators area ppropriate use a dust mask type N95 (US) or type P1 (EN 143) respirator.
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stable at normal temperatures and pressures.
Air, strong oxidizing agents, acids.
Ammonia, hydrogen sulfide gas.
Extinguish with water spray, carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Emits toxic fumes under fire conditions.
Prolonged or repeated exposure may cause allergic reactions in certain sensitive individuals.
Ingestion results in irritation of the gastrointestinal tract. Large doses may cause violent colic and diarrhea, circulatory disturbances, central nervous depression and even death.
May be harmful if inhaled. Material is irritating to mucous membranes and upper respiratory tract.
Causes skin irritation. May be harmful if absorbed through the skin.
Causes irritation. Persons with allergies and/or asthma may exhibit hypersensitivity to sulfites.
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.