Sodium nitrite industrial grade

Buyers must ensure the purity level is at least 99% for standard industrial applications. Key chemical parameters include moisture content (typically ≤1.5%), sodium nitrate content (≤0.8%), and water-insoluble matter (≤0.05%). For specific industries like metallurgy or dye manufacturing, the alkalinity (as Na2CO3) should be strictly monitored to prevent unwanted chemical reactions.

Suppliers should provide a Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) compliant with the GHS (Globally Harmonized System). Ensure the product meets GB 2367-2016 (Chinese National Standard for industrial sodium nitrite) or equivalent international standards like ISO 9001 for quality management. Since it is a hazardous chemical, a Certificate of Analysis (COA) for every batch is non-negotiable.

Sodium Nitrite is widely used as a corrosion inhibitor in metal treatment, a heat transfer salt in chemical processing, and a bleaching agent in textiles. In the construction industry, it acts as an antifreeze admixture for concrete. Buyers must specify the particle size (fine crystal vs. granular) based on their specific dissolution rate requirements and automated feeding systems.

Industrial grade sodium nitrite is hygroscopic and a strong oxidant. It must be packed in PP/PE woven bags with an inner plastic liner, typically in 25kg or 1000kg (Jumbo) sizes. Storage must be in a cool, dry, well-ventilated area, strictly separated from flammable materials, acids, and food additives to prevent cross-contamination or fire hazards.

Sodium Nitrite is classified under UN Number 1500, Class 5.1 (Oxidizing Substances) with a 6.1 subsidiary risk (Toxic). It requires IMDG-compliant packaging for sea freight. Buyers must ensure the supplier has a 'Dangerous Goods Export License' and uses specialized carriers. Always verify the Port of Loading's capability to handle Class 5.1 chemicals, as some ports have strict restrictions.

Utilize Made-in-China.com's Secured Trading services to protect payments. Conduct third-party inspections (such as SGS or BV) before loading to verify the chemical composition and packaging integrity. Avoid suppliers who refuse to provide a pre-shipment sample or those who lack a verified Business License with a scope including hazardous chemical production or export.

Chemical prices are highly sensitive to raw material costs (liquid ammonia and soda ash) and environmental protection policies in the manufacturing region. Negotiate based on volume tiers (e.g., 20ft FCL vs. LCL) and consider long-term contracts to hedge against price volatility. Requesting FOB (Free On Board) pricing is often more transparent for buyers who have their own hazardous goods forwarder.

Check your local import regulations for 'Dual-Use' chemicals or restricted substances, as Sodium Nitrite can be subject to strict monitoring due to its toxicity. Ensure all customs declarations accurately reflect the HS Code (typically 2834.1000). Failure to declare hazardous goods correctly can lead to heavy fines, cargo seizure, or blacklisting by maritime authorities.