Sodium sulfite
- 中文名称:亚硫酸钠
- CAS:7757-83-7
- UN Code:
- Individual Weight:50kg
- EINECS:231-821-4
- HS Code:
- Purity:96%
Description
Anhydrous sodium sulfite is a white crystalline powder or granule, odorless or with a slight sulfur dioxide odor. It is stable when dry, hygroscopic, and readily oxidized by air to sodium sulfate. Its aqueous solution is weakly alkaline and possesses strong reducing properties, releasing sulfur dioxide gas upon contact with acids.
Physical & Chemical Properties
- Molecular FormulaNa2SO3
- Density:2.63g/cm³g/cm³
- Boiling Point:
- Molecular Weight:126.04g/mol
- Flash Point:
- Melting Point:＞500℃
Safety, Security & Risk
Chemical Hazards
When heated, it decomposes, emitting toxic and corrosive fumes.The substance is a strong reducing agent.It reacts violently with oxidizing agents.It reacts with strong acids, producing toxic sulfur oxides.
When heated, it decomposes, emitting toxic and corrosive fumes.The substance is a strong reducing agent.It reacts violently with oxidizing agents.It reacts with strong acids, producing toxic sulfur oxides.