Product Overview
Sodium Hypochlorite 5.25% (CAS 7681-52-9) is a vital commodity chemical solution manufactured for diverse industrial, agricultural, and manufacturing applications. Formulated with a chemical formula of ClNaO and a molecular weight of 74.44 — this liquid solution represents an optimal active halogen concentration for medium-duty oxidation, pulp bleaching, and surface preparation. Alliance Chemical supplies this reliable source of bases and alkaline solutions to facilities requiring precise concentration controls without the severe outgassing and degradation risks associated with higher concentration hypochlorite concentrates. By offering this product in a stabilized aqueous format, we ensure consistent delivery of active chlorine for processes that cannot tolerate the volatile degradation curves of 12.5% or 15% solutions.
As a Texas chemical supplier operating since 1997, we understand that raw material consistency is paramount to industrial workflows. This solution is processed to limit impurities, such as heavy metal ions, which can catalyze the decomposition of hypochlorite into chlorate and oxygen. We source high-grade inputs to ensure that every container delivered retains its specified active strength under proper storage conditions. Whether you are using this product for waste stream oxidation, textile processing, or commercial laundering, you can depend on Alliance Chemical to deliver a product that integrates seamlessly into your automated dosing systems.
Why This Grade
Selecting the 5.25% concentration is critical for processes that require controlled oxidation rates and moderate pH buffering. At this specific concentration, the solution provides an efficient source of sodium hypochlorite without the aggressive corrosive profile of 12.5% or 15% industrial concentrates. Buyers choose this 5.25% solution when precise concentration control is required to prevent over-oxidation of substrates, which can lead to structural damage in delicate organic fibers or excessive heat generation in exothermic neutralization steps.
Using an incorrect concentration or an unbuffered grade introduces significant operational failure modes. If a higher concentrate is substituted arbitrarily, it can lead to rapid outgassing in storage piping, causing vapor lock in dosing pumps and localized chemical burns on equipment. Conversely, utilizing a concentration below 5.25% can cause incomplete oxidation reactions, leading to high concentrations of unreacted organic compounds in process streams and requiring costly system recalibrations. This 5.25% concentration represents the industrial sweet spot for predictability, storage stability, and handling safety in commercial settings.
Chemical Profile
- CAS Number
- 7681-52-9
- Chemical Formula
- ClNaO
- Molecular Weight
- 74.44 g/mol
- Boiling Point
- Boiling point: 111 °C in solution
- Melting Point
- MP: 18 °C /Pentahydrate/
- Flash Point
- Not applicable °C
- Specific Gravity
- 1.093 for 5% solution (USCG, 1999) - Denser than water; will sink
- Appearance
- Sodium hypochlorite appears as colorless or slightly yellow watery liquid with an odor of household bleach. Mixes with water. (USCG, 1999)
- Solubility
- 29.3 g/100 g (0 °C) in water
- UN Number
- UN1791
- Hazard Class
- Class 8
- Packing Group
- III
- Proper Shipping Name
- Hypochlorite solution
- GHS Signal Word
- Danger
Values sourced from Alliance Chemical's canonical chemistry registry. Certificate of Analysis (COA) per lot.
Industrial Applications
- Industrial wastewater management for the oxidation of hazardous chemical contaminants, including cyanide, sulfides, and other oxidizable inorganic compounds prior to safe municipal discharge.
- Textile and pulp bleaching operations where controlled delignification and whitening of natural cellulose fibers are required without degrading the structural integrity.
- Commercial laundry bleaching applications to remove heavy organic stains, brighten industrial linens, and maintain high-throughput fabric preparation standards without destroying fabric fibers.
- Surface preparation and cleaning of masonry, concrete, and industrial equipment to remove stubborn organic films, molds, and environmental discoloration.
- Chemical synthesis as an oxidizing agent in the production of hydrazine, chloramines, and various chlorinated organic compounds utilized in manufacturing.
Hazmat & Shipping
Sodium Hypochlorite 5.25% is classified as a regulated hazardous material for transport. It must be shipped in accordance with DOT regulations as UN1791, Hazard Class 8, Packing Group III. The proper shipping name for this material is Hypochlorite solution, and it carries the GHS signal word Danger. This classification is driven by its corrosive properties to metals and skin. Alliance Chemical ensures all shipments comply with hazardous material regulations, utilizing DOT-approved packaging designed to prevent leakage and withstand the corrosive nature of the liquid solution during transit.
When handling this regulated product, personnel must wear appropriate personal protective equipment (PPE) as specified by the GHS hazard statements H314 (Causes severe skin burns and eye damage) and H318 (Causes serious eye damage). Required PPE includes chemical-resistant gloves, protective clothing, and eye or face protection. Due to environmental hazard statements H400 and H410 (Very toxic to aquatic life with long lasting effects), spill containment measures must be actively maintained during unloading and transfer operations.
Handling & Storage
Proper storage of Sodium Hypochlorite 5.25% is critical to prevent thermal decomposition and maintain product activity. Store this liquid solution in a cool, dry, well-ventilated area away from direct sunlight, maintaining temperatures ideally between 50°F and 75°F. Containers must be constructed of compatible materials such as high-density polyethylene (HDPE) or PVC; avoid contact with metals like iron, copper, and nickel, which accelerate decomposition. Keep the solution isolated from incompatible substances, particularly acids, which react violently to release hazardous chlorine gas, and organic compounds.
Order & Documentation
Alliance Chemical provides comprehensive documentation to support your regulatory compliance and quality assurance workflows. A Safety Data Sheet (SDS) is provided with every order to ensure your facility has up-to-date handling, storage, and emergency response information. Additionally, a Certificate of Analysis (COA) is available upon request for every batch of Sodium Hypochlorite 5.25% we ship. For competitive pricing and bulk distribution inquiries, please reach out to our team. To move forward, you can Request a Quote or Download the SDS.
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.