Sodium Bisulfite 15% ACS Grade

Description

Product Overview

Sodium Bisulfite 15% ACS Grade is a pre-diluted aqueous solution of sodium bisulfite (NaHSO3) prepared with high-purity deionized water. This 15% concentration provides a convenient, ready-to-use form that eliminates the need for on-site dilution of concentrated stock. Appearance: Clear, colorless to pale yellow liquid with sulfur odor. Meeting ACS Reagent Grade specifications, this product is suitable for analytical and laboratory applications requiring controlled purity and documented impurity limits.

Supplied by Alliance Chemical in sizes ranging from 1 quart to 330-gallon IBC totes, this solution is ideal for operations requiring consistent 15% strength with minimal handling risk compared to higher concentrations.

Key Properties

• Chemical Name: Sodium Bisulfite
• Synonyms: Sodium Hydrogen Sulfite, NaHSO3
• Chemical Formula: NaHSO3
• CAS Number: 7631-90-5
• Molecular Weight: 104.06 g/mol
• Concentration: 15% (w/w)
• Grade: ACS
• Specific Gravity (20°C): 1.130
• Boiling Point: 100°C (solution)
• Flash Point: N/A
• Appearance: Clear, colorless to pale yellow liquid with sulfur odor
• Solubility: Highly soluble in water

Common Applications

• Dechlorination: Removes residual chlorine from treated wastewater and process water prior to discharge or reuse.
• Water Treatment: Oxygen scavenger used in boiler feedwater treatment and cooling systems to prevent corrosion.
• Food Preservation: Antioxidant and preservative used to prevent browning and microbial growth in food products.
• Pulp & Paper Processing: Bleaching agent and lignin solubilizer in pulp production and paper manufacturing.
• Photography & Developing: Fixing agent and preservative in photographic processing solutions.

Safety Precautions

Sodium Bisulfite solutions release sulfur dioxide gas, which is irritating to the respiratory tract. Handle in well-ventilated areas. Do not mix with acids — this accelerates SO2 release. Store in tightly sealed HDPE containers in a cool, dry location.

PPE Requirements: Wear chemical-resistant gloves, safety goggles, and respiratory protection if ventilation is inadequate. In case of inhalation, move to fresh air immediately. In case of skin or eye contact, rinse with water for at least 15 minutes. Refer to the Safety Data Sheet (SDS) for full handling and emergency procedures.

Shipping: UN 2693, Bisulfites, aqueous solutions, Class 8, PG III.

Benefits

Ready-to-Use Solution: Pre-diluted concentration simplifies dosing and reduces exposure to concentrated reagent.
Reliable Reducing Power: Consistent bisulfite content for predictable dechlorination and oxygen scavenging performance.
Scalable Supply: Available from small containers to bulk totes for any treatment or processing operation.

Related Products

• Sodium Bisulfite 40% ACS Grade
• Sodium Bisulfite 10% ACS Grade
• Sodium Bisulfite 15% Technical Grade
• Sodium Bisulfite 10% Technical Grade