Ammonium Bisulphite
General Product Information
| Article | Ammonium Bisulphite (70% solution) |
| Synonyms | Ammonium bisulfite, Ammonium hydrogen sulfite, Ammonium acid 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. This solution 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, food industry, and chemical production.
Characteristics
- Antioxidant and preservative: It is used in the food industry as an effective preservative, especially for stabilizing wine and beer and preventing oxidation.
- Odor: Distinctive sulfurous odor.
- Grade: Technical.
- Reducing agent: The solution is known for its ability to reduce other substances, which is important for applications such as bleaching and product stabilization.
Physical & Chemical Properties
| Chemical Structure | NH4HSO3 |
| Molare Weight | 115,1 g/mol |
| Melting Point | – |
| Boiling Point | Ca. 100 °C (depends on concentration) |
| Solubility | Soluble in water. |
| Density | – |
| Refractive Index | – |
| pH | 4-5 (depends on solution) |
| Color | Colorless |
| Shape | Solution (70% solution) |
Applications
Ammonium bisulfite solution is used in various ways:
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. Food Industry
It is used as a preservative and antioxidant in the production of wine and beer. It prevents oxidation of the products and helps stabilize flavor and color.
4. Water Treatment
It is used for water treatment, for example to remove chlorine from tap water or industrial wastewater.
5. Photography
Ammonium bisulfite solution is used as a fixing solution in the photographic industry.
Interessing Links
- Codex Alimentarius (FAO/WHO) – Guidelines and standards for food additives and food ingredients.
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- European Food Information Council (EFIC)
- European Food Safety Authority (EFSA) – Information about safety and application of food additives.
- PubChem – Ammonium Bisulfite of the National Library of Medicine by the National Center for Biotechnology Information.