7783-11-1

Basic information

• Product Name: AMMONIUM SULFITE
• Synonyms: AMMONIUM SULFITE;Ammonium sulfite monohydrate, 92% min;Sulfurous acid diammonium·hydrate;Ammonium sulfite mon;Diammonium sulfite monohydrate;Sulfurous acid diammonium salt monohydrate;Sulfurous acid,diammonium salt, monohydrate (8CI,9CI);Ammonium sulfite monohydrate 92%
• CAS NO: 7783-11-1
• Molecular Formula: H2O.H2O3S.2H3N
• Molecular Weight: 134.16
• EINECS: 233-484-9
• Mol File: 7783-11-1.mol
• Article Data: 0

Chemical Properties

• Melting Point: 60-70°C
• Appearance: White/Crystalline
• Density: 1.41 g/mL at 25 °C(lit.)
• Refractive Index: 1.515
• Storage Temp.: Store below +30°C.
• Water Solubility: Soluble in water. Insoluble in acetone and alcohol.
• Sensitive: Air Sensitive
• Merck: 14,557
• CAS DataBase Reference: AMMONIUM SULFITE(CAS DataBase Reference)
• NIST Chemistry Reference: AMMONIUM SULFITE(7783-11-1)
• EPA Substance Registry System: AMMONIUM SULFITE(7783-11-1)

Safety Data

• Hazard Codes: Xi
• Statements: 31-36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 7783-11-1(Hazardous Substances Data)

Usage

Chemical Properties

colorless crystal(s); loses H2O and gradually oxidizes to (NH4)2SO4 when heated in air; hygroscopic; used in medicine, metal lubricants, as a chemical reducing agent [MER06] [HAW93]

Physical properties

White or pale yellow solution. Thermal decomposition. Soluble in water, slightly soluble in ethanol, hardly soluble in acetone. The relative density of the saturated solution is 1.1995 (20°C), which is alkaline. Strong corrosion to steel.

Uses

Different sources of media describe the Uses of 7783-11-1 differently. You can refer to the following data:
1. Ammonium Sulfite is an additive used in the production of caramel.
2. Ammonium sulfite monohydrate is used in caramel coloring in the food industry. It is also used in cosmetics as a hair straightening agent and a hair waving agent. It acts as a reducing agent in photography. Further, it is used in the production of bricks in order to use in blast furnace linings. In addition to this, it used in gas scrubbers.

Precautions

Air sensitive. Incompatible with strong oxidizing agents, ammonia and acids.

InChI:InChI=1/2H3N.H2O3S.H2O/c;;1-4(2)3;/h2*1H3;(H2,1,2,3);1H2