Sodium Dichromate

Product Overview

Sodium Dichromate, identified by CAS Number 7789-12-0, is a highly versatile inorganic compound utilized extensively across multiple heavy industries. This chemical occurs as a reddish to bright orange solid, exhibiting significant water solubility. As a key chromium source, it plays a vital role in chemical synthesis, metal finishing, and pigment manufacture. Alliance Chemical supplies this critical raw material in various package sizes to meet your facility's operational requirements. You can find this product in our Inorganic Compounds collection. Our commitment to quality ensures that every shipment aligns with strict industrial standards, providing consistent performance for your production lines.

This compound, with the molecular formula Cr2H4Na2O9 and a molecular weight of 298.00, functions as a powerful oxidizing agent. In industrial contexts, it serves as a precursor to other chromium compounds, including chromic acid and various chromium-based pigments. Its high solubility makes it easier to incorporate into liquid-phase reactions compared to alternative chromium salts. For more details on packaging options, please refer to our Sodium Dichromate product page. This product is designed strictly for commercial applications and must be handled by trained personnel who understand the chemistry and risks involved.

Why This Grade

While standard grade parameters for this product are not specified under a standard pharmaceutical or food designation (which are not applicable for this compound), maintaining strict consistency in industrial-grade sodium dichromate is vital for process control. In electroplating and pigment synthesis, even minor deviations in concentration or the presence of uncontrolled trace impurities can disrupt chemical equilibria. For instance, in metal finishing, incorrect concentration ranges can cause uneven surface coatings, reduced corrosion resistance, or complete bath failure, leading to costly operational downtime and product waste.

By utilizing this commercial-standard solid formulation, industrial operators can precisely calculate stoichiometric requirements for their chemical reactions. Using an inconsistent or unverified grade can introduce unwanted elements like iron or chloride, which interfere with catalytic pathways and decrease overall yield. This product's predictable hydration state and chemical behavior allow engineers to maintain tight control over process variables. For reliable outcomes, procuring standard industrial grade material from a trusted distributor is critical to prevent batch-to-batch variance in high-tolerance applications.

Industrial Applications

• Metal Surface Finishing: Utilized in anodizing and conversion coating processes to provide robust corrosion resistance and paint adhesion on aluminum and steel surfaces.
• Pigment Manufacture: Serves as a vital precursor in the production of chrome yellow, chrome green, and other inorganic pigments used in industrial coatings.
• Leather Tanning: Acts as a primary source for generating trivalent chromium compounds, which are essential for stabilizing collagen fibers during tanning processes.
• Wood Preservation: Formulated into copper chrome arsenate (CCA) wood preservatives to protect exterior lumber from fungal decay and wood-boring insects.
• Chemical Synthesis: Functions as a powerful oxidizing agent in the production of synthetic organic compounds, pharmaceuticals precursors, and specialized essential oils.

Hazmat & Shipping

Sodium Dichromate is a highly regulated substance due to its hazardous properties. It is classified under United Nations guidelines as UN3288, Hazard Class 6.1, Packing Group III. Its proper shipping name is TOXIC SOLID, INORGANIC, N.O.S. (SODIUM DICHROMATE), and its official Signal Word is Danger. As a regulated hazardous material, transportation is subject to strict DOT regulations. Alliance Chemical coordinates all shipments through certified hazmat carriers, ensuring compliance with federal and state safety protocols to guarantee safe delivery to your facility.

Handling this compound requires comprehensive personal protective equipment (PPE) to mitigate exposure risks indicated by its GHS hazard classifications. These classifications include H317 (sensitization), H350 (carcinogenicity), H400 (aquatic toxicity), and H410 (long-term aquatic toxicity). Operators must wear chemical-resistant gloves, protective clothing, and respiratory protection such as a NIOSH-approved respirator. Eye and face protection are also mandatory. Under OSHA guidelines, proper engineering controls must be established to minimize airborne dust concentrations during transfer operations, ensuring worker safety and compliance.

Handling & Storage

Store sodium dichromate in a cool, dry, well-ventilated area away from direct sunlight and incompatible materials. This compound is highly hygroscopic and somewhat deliquescent, so containers must remain tightly sealed when not in use to prevent moisture absorption and caking. Ideal storage temperatures should range between 15°C and 25°C. Avoid contact with strong reducing agents, organic materials, combustible substances, and strong acids, as violent chemical reactions can occur. Store in original, corrosion-resistant packaging, preferably HDPE or lined steel drums, to ensure long-term stability and eliminate leakage risks.

Order & Documentation

Alliance Chemical provides comprehensive documentation to support your compliance and quality control processes. A Certificate of Analysis (COA) is available upon request for every batch we ship, and a Safety Data Sheet (SDS) is provided with every order to ensure safe handling. For bulk inquiries or custom packaging requirements, please reach out to our team of logistics experts. To initiate your procurement process, you can Request a Quote or Download the SDS directly from our online portal.

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.