Sodium Bisulfite 40% ACS Grade

Product Overview

Sodium Bisulfite 40% ACS Grade is a high-purity aqueous solution of sodium hydrogen sulfite (CAS 7631-90-5) — formulated to meet the stringent specifications established by the American Chemical Society. This chemical, represented by the molecular formula HNaO3S and a molecular weight of 104.06, functions primarily as a powerful reducing agent and dechlorination agent across various specialized industrial systems. Alliance Chemical distributes this precise 40% liquid formulation to ensure immediate utility in processing environments, removing the need for onsite dissolution of dry powder and minimizing associated dust inhalation hazards.

Our ACS Grade liquid formulation exhibits a clear to pale yellow appearance and carries a slight sulfurous odor, reflecting its active bisulfite content. With a typical pH range of 2.5–5.5 for a 10% aqueous solution, this product delivers consistent performance in chemical synthesis, redox chemistry, and photographic processing. As a trusted Texas chemical supplier, we manage rigorous quality controls to maintain the stability of this solution, preventing rapid decomposition and ensuring the assay remains at the stated concentration throughout its shelf life. We supply this solution in multiple packaging sizes to suit both laboratory and large-scale industrial requirements.

Why This Grade

Selecting ACS Grade sodium bisulfite at a 40% concentration is critical for applications where trace metallic impurities can interfere with sensitive chemical reactions or analytical procedures. The American Chemical Society standard guarantees exceptionally low limits for heavy metals, iron, and other potential contaminants. Utilizing a lower technical grade in analytical testing or high-precision manufacturing can introduce unwanted ions that poison catalysts, alter reaction kinetics, or cause precipitation in delicate equipment. For facilities managing high-throughput processes, using a verified 40% concentration ensures reliable stoichiometry without the variability associated with mixing dry crystalline sodium bisulfite on the factory floor.

A major failure mode in systems using substandard grades is the presence of excess sulfates or heavy metal residues, which can lead to unwanted side reactions and product discoloration. In water treatment and industrial bleaching operations, these impurities can degrade the efficiency of the dechlorination process, leading to equipment corrosion or failure to meet strict compliance parameters. By choosing this high-purity ACS solution, process engineers avoid the risks of inconsistent concentration drifts and particulate contamination. Alliance Chemical provides this premium grade to help maintain the integrity of your process, preventing costly downtime and batch contamination that often results from utilizing lower-tier industrial reagents.

Industrial Applications

• Chlorine Removal in Wastewater: Used in commercial municipal systems to neutralize residual chlorine in industrial wastewater before environmental discharge, protecting downstream ecosystems from toxic halogen exposures.
• Textile Bleaching and Dyeing: Serves as a critical reducing agent in the textile industry to remove excess chlorine after bleaching processes and to maintain dye bath consistency.
• Paper and Pulp Processing: Utilized in the bleaching of wood pulp, aiding in the reduction of residual lignin and neutralizing residual peroxide compounds during paper manufacturing.
• Laboratory Synthesis and Reagent Prep: Functions as a key reducing agent in organic synthesis pathways, helping to reduce carbonyl groups, alkenes, and other sensitive functional groups in controlled environments.
• Leather Tanning and Processing: Applied in the de-liming stage of leather manufacturing to neutralize alkaline residues and prepare hides for subsequent chrome or vegetable tanning procedures.

Hazmat & Shipping

Sodium Bisulfite 40% ACS Grade is classified as a hazardous material for transport. It is regulated under United States Department of Transportation (DOT) guidelines as UN2693, hazard class 8 (Corrosive), packing group III. The proper shipping name is strictly designated as Bisulfites, aqueous solutions, n.o.s. (Sodium bisulfite). The designated signal word for this chemical is Danger. Because of its corrosive nature and chemical properties, this liquid must be shipped in specialized, corrosion-resistant packaging and handled by certified hazmat carriers. Alliance Chemical coordinates all logistics in strict compliance with federal and state regulations, ensuring safe transit to your facility.

Under the Globally Harmonized System (GHS), this compound is associated with hazard statement H302 (Harmful if swallowed). In accordance with the precautionary statements P264, P270, P301+P317, P330, and P501, personnel must wear appropriate personal protective equipment (PPE) during handling. This includes chemical-resistant safety goggles, heavy-duty nitrile or neoprene gloves, and protective clothing to prevent direct skin contact or ingestion risks. A Safety Data Sheet (SDS) is provided with every order to detail exact exposure thresholds, spill mitigation protocols, and safe handling guidelines. Proper ventilation must be maintained in all work areas to prevent the accumulation of sulfur dioxide gas, which can desorb from the liquid under acidic conditions.

Handling & Storage

Proper storage of Sodium Bisulfite 40% ACS Grade requires maintaining a temperature range between 50°F and 85°F (10°C to 29°C) to prevent crystallization or accelerated decomposition. Store this chemical in original, tightly sealed containers made of compatible materials such as high-density polyethylene (HDPE), polypropylene, or glass. Avoid contact with incompatible materials, including strong oxidizers, mineral acids, and metals such as copper, brass, and mild steel, as contact can liberate toxic sulfur dioxide gas or cause rapid container degradation. For safety compliance, ensure storage areas are equipped with secondary containment and proper ventilation.

Order & Documentation

Alliance Chemical simplifies the procurement process for your chemical inventory in our salts collection. Our high-purity sodium bisulfite solution is available in various quantities from quarts to bulk gallons, perfect for laboratory analysis or manufacturing scales. A Certificate of Analysis (COA) is available upon request for every batch we ship, verifying critical purity standards. For purchasing questions or to secure volume pricing, please Request a Quote or Download the SDS for your safety records.

Why Buy from Alliance Chemical

Since 1997, Alliance Chemical has supplied premium industrial chemicals from Taylor, Texas under CAGE Code 1LT50, with a COA and SDS included on every order. For industrial use only.