1-quart HDPE bottle of Sodium Bisulfite 40% aqueous solution, white container with teal label, industrial-grade chemical with safety warnings.
1-quart white HDPE bottle of Sodium Bisulfite 40% solution by Alliance Chemical, featuring safety warnings and NFPA diamond hazard label.
32 oz bottles of Sodium Bisulfite 40% technical grade solution in white HDPE containers with safety caps, hazard labels and green label design.
4x1-gallon sodium bisulfite 40% solution in white HDPE jugs with hazard class 8 corrosive warning, shown with shipping box and safety labels.
Full pallet load (36 x 4 Gallon Cases) of sodium bisulfite on wooden pallet, stacked 5x4x2, kraft boxes with Alliance Chemical logo, industrial-grade chemical packaging.
5-gallon white HDPE container of Sodium Bisulfite 40% solution with green label, safety symbols, and industrial-grade chemical specifications.
15-gallon blue HDPE carboy of Sodium Bisulfite 40% solution with chemical hazard symbols, white handle, and Alliance Chemical label.
55-gallon blue HDPE drum of Sodium Bisulfite 40% solution by Alliance Chemical, featuring green-labeled safety information and hazard symbols.
275-gallon IBC tote of Sodium Bisulfite 40% solution with metal cage frame, integrated spigot, and chemical safety labeling on white container.
15x 5-gallon white poly pails of 40% sodium bisulfite solution stacked on wooden pallet, Alliance Chemical branded containers, industrial grade.
1-quart bottles of Sodium Bisulfite 40% solution in white HDPE containers with green labels, hazard symbols, and childproof caps, 8-pack configuration.
One-gallon HDPE container of Sodium Bisulfite 40% solution by Alliance Chemical, featuring NFPA diamond, safety instructions, and green-labeled industrial specifications.
2-gallon HDPE jugs of Sodium Bisulfite 40% solution by Alliance Chemical, featuring safety instructions, NFPA diamond, and chemical hazard symbols.
275-gallon IBC tote of Sodium Bisulfite 40% industrial chemical solution with metal cage, spigot valve, and Alliance Chemical safety labeling.
4x55 gallon blue HDPE drums of Sodium Hydroxide 50% (Caustic Soda) with GHS hazard symbols, Alliance Chemical branded labels, and secure screw caps.

Sodium Bisulfite 40%

Category : Salts

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Sodium Bisulfite 40%

$19.05
1-quart HDPE bottle of Sodium Bisulfite 40% aqueous solution, white container with teal label, industrial-grade chemical with safety warnings.
1-quart white HDPE bottle of Sodium Bisulfite 40% solution by Alliance Chemical, featuring safety warnings and NFPA diamond hazard label.
32 oz bottles of Sodium Bisulfite 40% technical grade solution in white HDPE containers with safety caps, hazard labels and green label design.
4x1-gallon sodium bisulfite 40% solution in white HDPE jugs with hazard class 8 corrosive warning, shown with shipping box and safety labels.
Full pallet load (36 x 4 Gallon Cases) of sodium bisulfite on wooden pallet, stacked 5x4x2, kraft boxes with Alliance Chemical logo, industrial-grade chemical packaging.
5-gallon white HDPE container of Sodium Bisulfite 40% solution with green label, safety symbols, and industrial-grade chemical specifications.
15-gallon blue HDPE carboy of Sodium Bisulfite 40% solution with chemical hazard symbols, white handle, and Alliance Chemical label.
55-gallon blue HDPE drum of Sodium Bisulfite 40% solution by Alliance Chemical, featuring green-labeled safety information and hazard symbols.
275-gallon IBC tote of Sodium Bisulfite 40% solution with metal cage frame, integrated spigot, and chemical safety labeling on white container.
15x 5-gallon white poly pails of 40% sodium bisulfite solution stacked on wooden pallet, Alliance Chemical branded containers, industrial grade.
1-quart bottles of Sodium Bisulfite 40% solution in white HDPE containers with green labels, hazard symbols, and childproof caps, 8-pack configuration.
One-gallon HDPE container of Sodium Bisulfite 40% solution by Alliance Chemical, featuring NFPA diamond, safety instructions, and green-labeled industrial specifications.
2-gallon HDPE jugs of Sodium Bisulfite 40% solution by Alliance Chemical, featuring safety instructions, NFPA diamond, and chemical hazard symbols.
275-gallon IBC tote of Sodium Bisulfite 40% industrial chemical solution with metal cage, spigot valve, and Alliance Chemical safety labeling.
4x55 gallon blue HDPE drums of Sodium Hydroxide 50% (Caustic Soda) with GHS hazard symbols, Alliance Chemical branded labels, and secure screw caps.
  • Description
  • Product Documents

Product Overview

Sodium Bisulfite 40% (Sodium Hydrogen Sulfite, NaHSO₃) Technical Grade is a clear, pale yellow liquid solution widely used as a reducing agent and oxygen scavenger in industrial applications. With a concentration of roughly 40% w/w, this solution offers a stable and efficient source of sulfur dioxide for chemical processing without the handling risks associated with gaseous SO₂. It functions effectively as an antichlor in water treatment facilities, neutralizing residual chlorine before discharge or further processing.

Beyond water treatment, Sodium Bisulfite 40% is utilized in metal finishing for chromium reduction, textile processing as a bleach neutralizer, and in photographic applications. The technical grade specification ensures consistent reactivity and specific gravity (approx. 1.25 g/mL), making it suitable for automated dosing systems in large-scale plant operations. This product is manufactured to minimize heavy metal impurities, ensuring reliable performance in synthesis and waste treatment workflows.

Key Properties

  • CAS: 7631-90-5
  • Appearance: Colorless to pale yellow liquid
  • Chemical Formula: NaHSO₃
  • Grade: Technical
  • Assay (NaHSO₃): 39% – 41%
  • Specific Gravity: 1.25 g/mL (Typical at 25°C)
  • pH: Acidic (3.5 - 5.0 typical)
  • Solubility: Completely soluble in water
  • Odor: Slight sulfurous odor

Common Applications

  • Water Treatment: Functions as a dechlorination agent to remove residual chlorine and ozone from municipal and industrial wastewater streams.
  • Metal Finishing: Used to reduce Hexavalent Chromium to Trivalent Chromium in plating wastewater treatment.
  • Textile Industry: Acts as an "antichlor" to neutralize bleach residues and improve fabric quality during processing.
  • Chemical Manufacturing: Serves as a reducing agent and intermediate in the synthesis of organic chemicals and polymers.
  • Boiler Treatment: Utilized as an oxygen scavenger to prevent corrosion in boiler water systems.

Safety & Handling

Sodium Bisulfite 40% is a corrosive liquid and a reducing agent. Appropriate Personal Protective Equipment (PPE) is required during handling, including chemical-resistant gloves, splash goggles, and protective clothing. Ensure adequate ventilation to avoid inhaling vapors, as the product releases sulfur dioxide gas upon contact with acids.

Storage: Store in a cool, dry, well-ventilated area in corrosion-resistant containers (HDPE, fiberglass, or rubber-lined steel). Keep away from strong oxidizing agents, acids, and heat sources to prevent decomposition. Refer to the Safety Data Sheet (SDS) for detailed emergency response and disposal procedures.

Shipping Info: UN 3265, Corrosive liquid, acidic, organic, n.o.s. (Sodium Bisulfite), 8, PG II.

Related Products

Property Value
Molecular Weight 104.06 g/mol
Formula NaHSO3
Assay 40%
Grade Technical
Form Liquid
Solubility Soluble in water and alcohol
Appearance Clear, colorless to pale yellow liquid
Specific Gravity 1.36
Industry Industrial, Environmental, Wastewater

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