Sodium sulfite 0AQ
General Product Information
| Article | Sodium sulfite 0AQ |
| Synonyms | Sodium sulfite anhydrate, Sodium sulphite, Hypo clear |
| CAS No. | 7757-83-7 |
| EEG No. | – |
| EINECS No. | 231-821-4 |
| IMO | – |
| Tariff Code | 28321000 |
| UN No. | – |
| VLG/ADR | – |
Description
Sodium sulfite 0AQ is an inorganic salt. It consists of sodium and sulfite ions and occurs as a white, crystalline powder that is highly soluble in water. It is widely used in industrial and commercial Applications because of its reductive properties and stabilizing effect.
Characteristics
- Odor: –
- Hygroscopic: Yes, light.
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | Na2SO3 |
| Molar Weight | 126.04 g/mol |
| Melting Point | – |
| Boiling Point | – |
| Density | – |
| Refractive Index | – |
| pH. | Approx. 9.0 (on 1% solution) |
Interessing Links
- CAS Common Chemistry – Sodium Sulfite
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Sodium Sulfite – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Sodium sulfite
Applications
Sodium sulfite 0AQ is applied in various ways, for instance:
1. Water Treatment
It is used to remove residual free chlorine or oxygen from boiler water or process water. This prevents corrosion in pipes and systems.
2. Textile Industry
Serves as a bleach and neutralizes residual chlorine after bleaching fabrics.
3. Textile & Pulp Industry
Used in the sulfite process to produce wood pulp.
4. Photography
In photographic development processes, sodium sulfite is used as a preservative to inhibit oxidation of development chemicals.
5. Chemical Industry.
Used as an intermediate or reductor at various synthesis processes.