Ammonium Bisulfite
General Product Information
| Article | Ammonium bisulfite |
| Synonyms. | Ammonium hydrogen sulfite, Monoammonium sulfite |
| CAS No. | 10192-30-0 |
| EEG No. | – |
| EINECS No. | 233-469-7 |
| IMO | – |
| Tariff Code | 28322000 |
| UN No. | – |
| VLG/ADR | – |
Description
Ammonium bisulfite solution is an aqueous solution of ammonium bisulfite. It is a colorless liquid with a characteristic sulfurous odor and is often used in industrial processes due to its reducing and preservative properties. Ammonium bisulfite solution is versatile and can be used in various sectors such as the textile industry, water treatment, and chemical production.
Characteristics
- Odor: Distinctive sulfurous odor.
- Hygroscopic: Yes.
- Color: Colorless.
- Grade: Technical.
- Solubility: Soluble in water.
- Reducing agent: The solution is known for its ability to reduce other substances, which is important for applications such as bleaching and product stabilization.
- Shape: Liquid (70% solution).
Physical & Chemical Properties
| Chemical Structure | NH4HSO3 |
| Molare Weight | 115,1 g/mol |
| Melting Point | – |
| Boiling Point | Approx. 100 °C (depends on concentration) |
| Density | – |
| Refractive Index | – |
| pH | 4-5 (depends on solution) |
Applications
Ammonium bisulfite solution is applied in various ways, for instance:
1. Chemical Industry
It is an important intermediate in the synthesis of sulfites, sulfonates, and other chemical compounds.
2. Textile Industry
Ammonium bisulfite solution is used for bleaching textiles and fixing dyes. It helps remove unwanted dyes and improve the quality of textile products.
3. Water Treatment
It is used for water treatment, for example to remove chlorine from tap water or industrial wastewater.
4. Photography
Ammonium bisulfite solution is used as a fixing solution in the photographic industry.
Interessing Links
- CAS Common Chemistry – Ammonium Bisulfite
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Ammonium Bisulfite of the National Library of Medicine by the National Center for Biotechnology Information.