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Commercial Fulfillment Snapshot
Buy Sodium Bisulfite 40% ACS Grade with faster decisions and fewer back-and-forth emails.
Ships from Taylor, Texas. In-stock orders placed before 1:00 PM CT (Mon-Thu) and before 12:00 PM CT (Fri) typically ship same business day. Order online 24/7.
Who Buys This
- Analytical testing laboratories
- Research & development facilities
- QA/QC departments
- Pharmaceutical manufacturers
- Chemical synthesis operations
Purity / Grade Guide
- ACS reagent grade purity
- Analytical chemistry applications
- Pharmaceutical & research use
- 40% concentration verified by COA specification
Pack Sizes
- 1 Quart: lab & small jobs
- 1 Gallon: shop & maintenance
- 5 Gallon: production & regular use
- 15 Gallon: mid-volume operations
- 55 Gallon: bulk drum
- 275 Gallon: high-volume tote
- 330 Gallon: max-volume tote
SDS / COA / TDS
- UN 2693 Class 8 shipping
- Safety data sheet included
- Certificate of analysis provided
- ACS specification compliance
Small Packs: UPS Ground nationwide for pints, quarts, and gallons.
LTL / FTL: ABF, SEFL, Saia, XPO, and partner carriers for pails, drums, totes, and full truckloads.
Support: Email or call for freight options, hazardous-material routing, and lead-time confirmation.
Product Overview
Sodium Bisulfite 40% (NaHSO₃) ACS Grade is a high-purity aqueous solution functioning as a precise reducing agent and antioxidant. This formulation meets American Chemical Society (ACS) specifications, ensuring low impurity levels (heavy metals, iron, and chloride) required for critical analytical chemistry and industrial water treatment processes.
This 40% w/v solution is the standard concentration for dechlorination, oxygen scavenging in boiler systems, and reductive synthesis. As an ACS Grade material, it is specifically manufactured to support reproducible results in titration standards, photographic development, and regulatory-compliant wastewater treatment where trace contaminants must be minimized.
Key Properties
- CAS Number: 7631-90-5
- Grade: ACS Reagent Grade
- Concentration: 40% (39-41% w/w)
- Appearance: Colorless to pale yellow liquid
- Formula: NaHSO₃
- Specific Gravity: 1.23 (Typical)
- Heavy Metals (as Pb): ≤0.05–0.2 ppm
- Iron (Fe): ≤0.08–0.3 ppm
- Solubility: Completely soluble in water
Common Applications
- Water Treatment: Used for dechlorination of drinking water and wastewater, removing residual chlorine before discharge or use.
- Analytical Chemistry: A primary reducing agent in redox titrations and laboratory analysis requiring high-purity reagents.
- Industrial Processing: Acts as an oxygen scavenger in boiler water treatment and a reducing agent in chemical synthesis.
- Photography: Preservative in developer solutions to prevent rapid oxidation of developing agents.
- Textile & Paper: utilized as an antichlore and bleaching assistant.
Safety Precautions
Sodium Bisulfite 40% is a corrosive liquid (Class 8). It releases sulfur dioxide gas if in contact with acids. Store in a cool, well-ventilated area in corrosion-resistant containers (HDPE). Avoid contact with skin and eyes. Wear appropriate Personal Protective Equipment (PPE), including acid-resistant gloves, splash goggles, and face shield. Refer to the Safety Data Sheet (SDS) for specific handling and emergency response protocols.
Benefits
ACS Purity: Minimizes interference in analytical and sensitive chemical processes.
Efficient Dechlorination: Rapidly neutralizes free chlorine in water treatment systems.
Versatile Packaging: Available in sizes ranging from 1 Quart bottles to 330 Gallon totes.
Quality Assurance: Rigorous testing ensures compliance with USP-NF and ACS monographs.
Related Products
| Property | Value |
|---|---|
| Molecular Weight | 104.06 g/mol g/mol |
| Formula | NaHSO3 |
| Assay | 40% |
| Grade | ACS Reagent Grade |
| Flash Point | Non-flammable |
| Form | Liquid |
| Solubility | Highly soluble in water, moderate alcohol soluble |
| Appearance | Clear to pale yellow liquid |
| Melting Point | '-10°C °C |
| Boiling Point | 103°C °C |
| Specific Gravity | 1.36 |
| Industry | Industrial, Environmental, Wastewater |
Frequently Asked Questions About Sodium Bisulfite 40% ACS Grade
What is Sodium Bisulfite 40% ACS Grade and what is its chemical formula?
Sodium Bisulfite 40% ACS Grade is a chemical compound with the molecular formula NaHSO3, registered under CAS Number 7631-90-5 by the Chemical Abstracts Service (PubChem), with a molecular weight of 104.06 g/mol g/mol. Alliance Chemical supplies Sodium Bisulfite 40% ACS Grade in ACS Reagent Grade grade for laboratory, industrial, and commercial applications.
What are the physical properties of Sodium Bisulfite 40% ACS Grade?
According to the NIOSH Pocket Guide to Chemical Hazards, Sodium Bisulfite 40% ACS Grade is supplied as a clear to pale yellow liquid. It has a melting point of '-10°C°C, a boiling point of 103°C°C, a flash point of Non-flammable. The specific gravity is 1.36 relative to water. Solubility: Highly soluble in water, moderate alcohol soluble.
What grade and purity of Sodium Bisulfite 40% ACS Grade does Alliance Chemical offer?
Alliance Chemical offers Sodium Bisulfite 40% ACS Grade in ACS Reagent Grade grade with a purity assay of 40%. Every lot ships with a Certificate of Analysis (COA) and Safety Data Sheet (SDS) prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and GHS Revision 7. Download SDS.
What are common industrial applications of Sodium Bisulfite 40% ACS Grade?
Sodium Bisulfite 40% ACS Grade serves a wide range of sectors, including Industrial, Environmental, and Wastewater.Alliance Chemical provides the documentation and quality certifications required for use in regulated environments.
What PPE is required when handling Sodium Bisulfite 40% ACS Grade?
OSHA-mandated PPE per 29 CFR 1910.132-138:Nitrile gloves (8+ mil), safety goggles, flame-resistant clothing, grounded footwear, closed-toe chemical-resistant footwear. Respiratory protection (organic vapor cartridge) required in areas exceeding PEL/TLV per 29 CFR 1910.134. Emergency eyewash station and safety shower must be accessible within 10 seconds per ANSI Z358.1. Consult the SDS available from Alliance Chemical for complete PPE requirements.
What are the storage requirements for Sodium Bisulfite 40% ACS Grade?
Store perOSHA 29 CFR 1910.106: Approved flammable storage cabinet, maximum 60 gallons per cabinet, grounding/bonding required. Temperature range:15-25°C. Segregate from:oxidizers, ignition sources. Maximum storage:2-3 years unopened.
What is the emergency spill procedure for Sodium Bisulfite 40% ACS Grade?
Emergency response per EPA SPCC (40 CFR 112) and OSHA 29 CFR 1910.120: (1) Alert personnel, evacuate area to 100 feet. (2) Eliminate ignition sources if flammable. (3) Don PPE per SDS Section 8. (4) Stop leak if safe; use emergency shutoffs. (5) Contain with non-combustible absorbent materials, dike with sand/earth. (6)Absorb with vermiculite or commercial spill kits. (7) Collect in DOT-approved containers, label as hazardous waste. Check 40 CFR 302.4 for Reportable Quantity. Emergency: Chemtel 1-800-255-3924 (24/7). Non-emergency: Alliance Chemical 512-365-6838.
What is the DOT shipping classification for Sodium Bisulfite 40% ACS Grade?
DOT Classification per 49 CFR 172.101:UN1993 (Flammable Liquid, N.O.S.), Hazard Class3 (Flammable), Packing GroupII/III. Requires: Hazmat shipping papers (49 CFR 172.200), UN specification packaging (49 CFR 173), hazmat labels (172.400). Alliance Chemical ships all orders in DOT-compliant packaging with proper documentation.
How must Sodium Bisulfite 40% ACS Grade waste be disposed?
Disposal per RCRA (40 CFR 261-265):Characteristic waste D001 (Ignitable, flash point <60°C). Generator requirements: EPA ID number required if >100 kg/month (40 CFR 262.12). Use EPA-permitted Treatment, Storage, Disposal Facility (TSDF). Never discharge to sewer without POTW written approval (40 CFR 403). Container disposal: Triple rinse (40 CFR 261.7), offer for reconditioning/recycling. State regulations may be more stringent — check with your local environmental agency. Consult the Alliance Chemical SDS for product-specific disposal guidance.
Does Alliance Chemical provide an SDS and COA for Sodium Bisulfite 40% ACS Grade?
Yes. Alliance Chemical provides a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for every lot of Sodium Bisulfite 40% ACS Grade. The SDS is prepared in accordance with OSHA Hazard Communication Standard 29 CFR 1910.1200 and the Globally Harmonized System (GHS) Revision 7, covering all 16 required sections including hazard identification, first aid measures, firefighting measures, handling and storage, exposure controls, and regulatory information. The SDS is available for download directly from this product page. COAs are available upon request by contacting Alliance Chemical at 512-365-6838.
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