Sodium Bisulphate

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Sodium Bisulphate, also known as sodium hydrogen sulphate, is a white crystalline powder or granular solid commonly used as an acidic cleaning agent, pH adjuster, and bleaching accelerator. It is a dry acid that releases sulfur dioxide when dissolved in water, making it effective in various industrial, food, and water treatment applications. This compound is valued for its ability to lower pH safely and is widely used where a controlled acidification is required without handling hazardous liquid acids.

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Categories: Acidulants, FOOD AND BEVERAGE CHEMICALS, pH Adjusters, WATER TREATMENT CHEMICALS Tags: Acid Salt, Food Additive (Acidulant), Inorganic chemical, pH adjuster, Sodium Bisulphate, Sodium Hydrogen Sulfate

Description

Uses

Primary Uses

Water Treatment
- Used to lower pH in swimming pools, cooling towers, and industrial water systems to prevent scaling and corrosion.
- Acts as a disinfectant booster by creating acidic conditions that improve sanitizer efficiency.
Cleaning Industry
- Employed as a descaling and cleaning agent for removing mineral deposits, rust, and stains from metal surfaces and equipment.
- Used in household cleaning products, especially in toilet bowl cleaners and bathroom cleaners, due to its acidic nature.
Food & Beverage Industry
- Used as an acidulant and pH control agent in food processing, especially in baking powders and certain beverages.
- Serves as a leavening acid in combination with sodium bicarbonate in baking applications.
Industrial Applications
- Utilized in textile and leather processing for pH adjustment.
- Acts as a bleaching accelerator in detergent formulations.

Secondary Uses

Cosmetics and Personal Care
- Incorporated in certain cosmetic formulations to adjust acidity and preserve product stability.
Agriculture
- Used to acidify soil in controlled applications, promoting nutrient availability for certain crops.
Laboratory & Analytical Uses

Employed as a reagent for acidification in chemical analyses.

PRODUCT KEY FEATURES

Basic Identification Attributes

Chemical Name (IUPAC): Sodium bisulfate (Sodium hydrogen sulfate)
Common/Trade Name: Sodium Bisulphate
CAS Number: 7681-38-1
HS Code: 2833.29
Synonyms: Sodium hydrogen sulfate, dry acid, sodium bisulfate

Physical & Chemical Properties

Physical State: Solid powder or granules
Color & Odor: White, odorless
Solubility: Soluble in water, releasing acidic solutions
pH: Approximately 1–2 in aqueous solution (acidic)
Density: Approx. 2.66 g/cm³

Safety & Hazard Attributes

GHS Classification: Corrosive to skin and eyes
Toxicity: Moderate; can cause burns on contact
Exposure Limits: Use with adequate ventilation; avoid inhalation and contact

Storage & Handling Attributes

Storage Conditions: Store in a cool, dry, well-ventilated area away from moisture and incompatible substances such as alkalis
Container Type: Bags or sealed drums
Shelf Life: Typically 1–2 years when stored properly
Handling Precautions: Use protective gloves, goggles, and clothing; avoid dust inhalation

Regulatory & Compliance Attributes

Complies with industrial chemical safety standards (e.g., REACH, OSHA)
Approved for food additive use in regulated quantities (where applicable)
Meets environmental regulations for handling acidic chemicals

Environmental & Health Impact

Biodegradability: Inorganic compound; does not biodegrade but is environmentally stable
Ecotoxicity: Can be harmful in large quantities due to acidity

Bioaccumulation: Not significant

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Acid-resistant gloves, eye protection, protective clothing, and dust masks recommended
Handling Guidelines: Use in well-ventilated areas; avoid skin and eye contact; prevent dust formation
Storage Measures: Keep containers tightly closed and stored in a dry environment

First Aid Measures

Inhalation: Move to fresh air immediately; seek medical attention if respiratory irritation develops
Skin Contact: Rinse immediately with plenty of water; seek medical help if burns or irritation persist
Eye Contact: Flush eyes with water for at least 15 minutes; get urgent medical attention
Ingestion: Rinse mouth with water; do not induce vomiting; seek immediate medical assistance

Firefighting Measures

Fire Hazards: Non-flammable but can release sulfur dioxide upon decomposition
Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ for surrounding fires
Special Precautions: Use protective equipment and self-contained breathing apparatus when fighting fires
Hazardous Combustion Products: Sulfur oxides (SOx)