Sodium Bisulfite
- CAS Number
- 7631-90-5
- HSN Code
- 28321010
- Molecular Formula
- NaHSO3
- Catalogue Number
- AL4087
- Purity
- ≥ 98%
- Molecular Weight
- 104.06 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Sodium hydrogensulfite is an inorganic sodium salt having hydrogensulfite as the counterion. It has a role as a mutagen, an allergen, a reducing agent, a food antioxidant and a food colour retention agent.
Also known as Sodium acid sulfite.
- Catalogue No.
- AL4087
- CAS Number
- 7631-90-5
- Molecular Formula
- NaHSO3
- Molecular Weight
- 104.06 g/mol
- HSN Code
- 28321010
- Grade
- Standard grade
- Product Form
- Substance
Melting point: less than 32 °F; Boiling point: 104 °C; Density: 1.48; Solubility: Sol in 3.5 parts cold water, in 2 parts boiling water, in about 70 parts alcohol.
- Appearance
- White crystal or crystalline powder
- Shelf Life
- 2 years
- Packaging
- Available in: 500 gm plastic bottle, 5 Kg plastic container
- Storage
- Separated from acids, strong oxidants and food and feedstuffs. Well closed.
1.1 — Product identifier
- Chemical Name
- Sodium Bisulfite
- Catalogue No.
- AL4087
- Product form
- Substance
- CAS Number
- 7631-90-5
- EC Number
- 231-548-0
- Grade
- Standard grade
- EC Index Number
- 016-063-00-2
- Chemical Formula
- NaHSO3
- HSN Code
- 28321010
- Synonyms
- Sodium acid sulfite
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Reducing agent, food preservative, reference compound
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.1 — Classification of the substance or mixture
- Classification according to Regulation (EC) No 1272/2008
- Acute Tox. 4
- Classification source
- ECHA C&L Inventory via PubChem CID 23665763 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Irritant
- Signal word
- Warning
- Hazard statements
- H302: Harmful if swallowed
- Precautionary statements
- P264, P270, P301+P317, P330, P501
2.3 — Other hazards
- Other hazards
- Releases irritating sulfur dioxide gas upon decomposition.
3.1 — Substance
- Name
- Sodium Bisulfite
- CAS No.
- 7631-90-5
4.1 — Description of first aid measures
- First-aid measures after inhalation
- If a person breathes large amounts of this chemical, move the exposed person to fresh air at once.
- First-aid measures after skin contact
- Wash with plenty of water.
- First-aid measures after eye contact
- If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.
- First-aid measures after ingestion
- If this chemical has been swallowed, get medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of the respiratory tract, skin, and eyes; potential allergic reactions.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- May emit sulfur dioxide gas when heated or involved in a fire.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Evacuate area and ventilate. Avoid breathing dust. Use appropriate protective equipment.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Personal protection: filter respirator for acid gases and vapours adapted to the airborne concentration of the substance. Collect leaking and spilled liquid in covered non-metallic containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Wash away remainder with plenty of water.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Avoid contact with skin and eyes. Use in a well-ventilated area. Wear appropriate personal protective equipment.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Separated from acids, strong oxidants and food and feedstuffs. Well closed.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use appropriate respiratory protection if dust or mist is generated.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- White to pale yellow
- Odour
- Slight sulfurous odor
- Odour threshold
- Not specified
- pH value
- 4.5 (1% solution)
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- less than 32 °F
- Freezing point
- Not specified
- Boiling point
- 104 °C
- Flash point
- Not applicable
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Not flammable under normal conditions
- Vapour pressure
- Vapor pressure, kPa at 20 °C: 2.4
- Relative vapour density at 20°C
- Not specified
- Density
- 1.48
- Solubility
- Sol in 3.5 parts cold water, in 2 parts boiling water, in about 70 parts alcohol.
- Log Pow
- Not specified
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not specified
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions; may react with strong acids and oxidizing agents.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- Decomposes on heating and on contact with acids. This produces sulfur oxides. Reacts with acids and strong oxidants.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong acids, strong oxidizers, and moisture.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Emits toxic fumes of oxides of sulfur & sodium monoxide when heated to decomposition.
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Rat oral 2 g/kg; LD50 Rat iv 115 mg/kg; LD50 MOUSE IV 130 MG/KG
- Skin corrosion/irritation
- Not classified (based on available data)
- Serious eye damage/irritation
- Not classified (based on available data)
- Respiratory or skin sensitisation
- Not classified (based on available data)
- Germ cell mutagenicity
- Not classified (based on available data)
- Carcinogenicity
- Not classified (based on available data)
- Specific target organ toxicity (single exposure)
- Not classified (based on available data)
- Specific target organ toxicity (repeated exposure)
- Not classified (based on available data)
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- Not assigned
- UN-No. (IMDG)
- Not assigned
- UN-No. (IATA)
- Not assigned
- UN-No. (ADN)
- Not assigned
- UN-No. (RID)
- Not assigned
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Sodium bisulfite
- Proper Shipping Name (IMDG)
- Sodium bisulfite
- Proper Shipping Name (IATA)
- Sodium bisulfite
- Proper Shipping Name (ADN)
- Sodium bisulfite
- Proper Shipping Name (RID)
- Sodium bisulfite
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- Not classified as hazardous for transport
14.4 — Packing group
- Packing group (ADR)
- Not applicable
- Packing group (IMDG)
- Not applicable
- Packing group (IATA)
- Not applicable
- Packing group (ADN)
- Not applicable
- Packing group (RID)
- Not applicable
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Sodium bisulfite is primarily used as a reducing agent in various chemical processes, including the preservation of food and beverages, where it helps to prevent oxidation and spoilage. In the food industry, it is commonly used in dried fruits, wines, and other products to maintain color and freshness. Additionally, sodium bisulfite is utilized in analytical chemistry as a reference compound for various assays and tests, particularly in the determination of sulfite levels in food and beverages. It also finds applications in the textile and paper industries, where it is used in bleaching processes and as a reducing agent in dyeing.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL01357
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 104.06 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 98% | 99.5% |
| Moisture content | ≤ 1% | 0.5% |
| Residue on ignition | ≤ 0.5% | 0.2% |
| Related substances | None detected | None detected |
| Solubility | 70 g/L in water | 72 g/L in water |
The above product is expected to comply with Standard grade grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| Standard grade | ≥ 98% | m.p. less than 32 °F; b.p. 104 °C | ≤ 1% | ≤ 0.5% | None detected | Sol in 3.5 parts cold water, in 2 parts boiling water, in about 70 parts alcohol. |
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