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Sodium bisulfite is an acidic sulfite salt used as a reducing agent used in chemistry education, analytical work and research settings. It can reduce oxidizing species and may release sulfur dioxide if contacted with acids. Its properties make it relevant when teaching the relationships between composition, structure, solution behaviour and measured chemical reactions. Laboratory work involving Sodium BiSulphite can include carefully selected procedures such as aqueous reduction demonstrations and oxidant quenching experiments, provided that the compound form, handling controls and experimental conditions are suitable. The 500 gram pack designation identifies the quantity offered rather than establishing analytical suitability or composition. As with all laboratory reagents, intended experiments should be matched to the supplied grade, documented specifications and current safety data. Where product wording does not identify a definite chemical form or mixture formulation, those details must be confirmed before calculations or use.
Product Specifications
| Specification | Details |
|---|---|
| Appearance | White crystalline powder |
| Assay | 99% |
| Chemical Name | Sodium bisulfite |
| Alternate Names | Sodium hydrogen sulfite; sodium hydrogensulfite |
| Molecular Formula | NaHSO3 |
| Empirical Formula | NaHSO3 |
| CAS Number | 7631-90-5 |
| Molecular Weight | 104.06 g/mol |
| Grade | LR Laboratory Reagent |
Key Features of Sodium BiSulphite
- Identified chemically as Sodium bisulfite, with relevant laboratory characteristics.
- It can reduce oxidizing species and may release sulfur dioxide if contacted with acids.
- Physical appearance: white crystalline powder.
- Composition information: NaHSO3.
- Appropriate for carefully selected educational and analytical experiments when the supplied form and method requirements are verified.
Laboratory Applications of Sodium BiSulphite
- Aqueous reduction demonstrations.
- Oxidant quenching experiments.
- Sulfite-bisulfite equilibrium studies.
- Redox titration exercises.
- Oxygen-scavenging investigations.
Why Choose Lab Wale to Buy Sodium BiSulphite
Lab Wale offers a way for school, college, university and professional laboratory buyers to source Sodium BiSulphite alongside other scientific supplies. When choosing this reagent, compare its identified chemical form, listed grade and quantity with your intended procedure and institutional purchasing requirements. Review available technical and safety information before ordering, particularly where hydrate state or formulation can change calculated concentrations or handling controls. Product selection should reflect the particular experiment rather than an assumption that one grade suits every method.
Frequently Asked Questions About Sodium BiSulphite
What is Sodium BiSulphite used for in laboratories?
Sodium bisulfite is used in appropriate laboratory exercises including aqueous reduction demonstrations, oxidant quenching experiments and sulfite-bisulfite equilibrium studies. The exact method, available grade and necessary safety supervision should be assessed before use.
What is the chemical formula of Sodium BiSulphite?
The compositional information for this listing is NaHSO3. Where a hydrate, formulation or mixture is not explicitly specified, the exact identity must be confirmed before calculating molar quantities or preparing analytical solutions.
What is the CAS number of Sodium BiSulphite?
The CAS information for the described product is 7631-90-5. An identifier for one hydrate or composition must not be assumed to identify a different variant; confirm the precise substance on the supplier label and safety documentation.
Can Sodium BiSulphite be used for college and research experiments?
It can be considered for the scientifically appropriate procedures described here, subject to experiment-specific requirements. The LR designation alone does not establish fitness for trace analysis or other tightly specified methods. Hazard controls and suitable supervision remain essential.
How should Sodium BiSulphite be stored and handled?
Keep dry, tightly closed and away from strong acids and oxidizing substances. Avoid contact with acids and inhalation of dust or sulfur dioxide; use ventilation. Read the current Safety Data Sheet and follow local laboratory waste and spill procedures before opening or weighing the reagent.
Storage Conditions for Sodium BiSulphite
Keep dry, tightly closed and away from strong acids and oxidizing substances. Keep containers correctly labelled and segregate from incompatible substances according to the current Safety Data Sheet. Avoid transferring material into unlabelled vessels, and check packaging integrity before use. Follow any additional humidity, light or containment requirements specified for the supplied product.
Precautions for Handling Sodium BiSulphite
Avoid contact with acids and inhalation of dust or sulfur dioxide; use ventilation. Review the current Safety Data Sheet before use. Wear appropriately selected gloves, a laboratory coat and chemical splash eye protection; work with suitable ventilation or containment where indicated. Prevent unnecessary inhalation and skin exposure, avoid incompatible mixing, and use designated spill response and waste disposal procedures. Educational work involving hazardous reagents requires competent supervision.


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