Sodium nitrite-nano2

Sodium Nitrite is a versatile chemical used extensively as a corrosion inhibitor in industrial cooling systems and as a heat transfer salt in metallurgical processes. In the textile industry, it acts as a bleaching agent and color fixative, while in the chemical sector, it is a critical precursor for producing diazo dyes and rubber chemicals. For construction, it serves as an anti-freeze admixture for concrete in cold climates.

Buyers should typically look for Industrial Grade (≥99% purity) or Food Grade depending on the application. Key parameters include moisture content (≤1.5%), insoluble matter (≤0.05%), and sodium nitrate content (≤0.8%). For high-end chemical synthesis, ensure the product is free-flowing and anti-caking to prevent processing delays.

As a hazardous chemical, it must comply with the Globally Harmonized System (GHS) for labeling. Suppliers should provide a valid Material Safety Data Sheet (MSDS/SDS). For international trade, ensure the product meets ISO 9001:2015 quality management standards and, if intended for food preservation, strict adherence to FCC (Food Chemicals Codex) or local food safety regulations is mandatory.

Sodium Nitrite is a strong oxidant (Class 5.1) and is toxic. Buyers must verify that suppliers use moisture-proof, double-layered PE/PP bags. It must be stored away from acids, organic matter, and flammable materials to prevent spontaneous combustion or the release of toxic nitrogen oxide gases. Ensure the supplier provides clear hazard warnings on all packaging.

Sodium Nitrite is classified under UN Number 1500 (Class 5.1 Oxidizer, Sub-risk 6.1 Toxic). You must ensure the supplier is licensed to export Dangerous Goods (DG). Shipping requires specialized DG containers and a Dangerous Goods Declaration. Always confirm if your local port has the facilities to handle and clear Class 5.1 hazardous chemicals before placing a bulk order.

Utilize Secure Payment services provided by platforms like Made-in-China.com to protect your funds until delivery. It is highly recommended to hire a third-party inspection agency (like SGS or BV) to perform a Pre-Shipment Inspection (PSI) to verify purity levels and packaging integrity, as chemical composition cannot be verified visually.

Chemical prices are highly sensitive to raw material costs (ammonia and natural gas). Negotiate based on volume-based pricing tiers; for example, ordering in full container loads (FCL) can reduce unit costs by 10-20% compared to LCL. Ask for a Certificate of Analysis (COA) for the specific batch before finalizing the price.

Be aware of Anti-dumping duties that some countries (like the US or EU) may impose on chemical imports from specific regions. Always check the HS Code (typically 2834.10) against your country's latest tariff schedule. Ensure the supplier provides a Certificate of Origin to benefit from any applicable Free Trade Agreements (FTAs).