Nitric acid 68% manufacturers

Nitric Acid at a 68% concentration is considered the standard commercial grade (azeotropic mixture). Buyers must verify the purity levels, specifically checking for maximum allowable limits of impurities like iron (Fe), chlorides (Cl), and sulfates (SO4). For industrial use, ensure it meets GB/T 626-2006 (Chinese National Standard) or equivalent international standards like ASTM. Always request a Certificate of Analysis (COA) for every batch to confirm the exact concentration and heavy metal content.

Due to its highly corrosive and oxidizing nature, 68% Nitric Acid must be stored in UV-resistant HDPE (High-Density Polyethylene) drums, IBC tanks, or stainless steel tanks (specifically 304 or 316L with passivation). Ensure the packaging is UN-certified for the transport of Class 8 corrosive substances. Storage areas must be cool, well-ventilated, and equipped with acid-resistant flooring and secondary containment to prevent environmental contamination in case of leaks.

This concentration is widely used in metal finishing (pickling and etching), the production of nitrogen-based fertilizers, and as a precursor for explosives and organic synthesis. In the electronics industry, it is used for cleaning silicon wafers. Buyers should ensure the grade (Technical, Reagent, or Electronic grade) matches their specific application, as Electronic Grade requires significantly lower trace metal parts-per-billion (ppb) levels.

Suppliers must provide a comprehensive Safety Data Sheet (SDS/MSDS) compliant with the GHS (Globally Harmonized System). For cross-border trade, verify the supplier's Production License for Hazardous Chemicals and their Export License. If sourcing via Made-in-China.com, look for Audited Suppliers who have undergone third-party onsite inspections by firms like SGS or TÜV Rheinland to ensure legitimate manufacturing capabilities.

Nitric Acid is classified as Dangerous Goods (DG) Class 8 (Corrosive) and Class 5.1 (Oxidizer) depending on concentration. It requires specialized DG containers and cannot be shipped via standard air freight. You must work with freight forwarders experienced in IMO (International Maritime Organization) regulations. Ensure the vessel allows for the segregation of acids from flammable liquids and bases to prevent violent reactions during transit.

Use Trade Assurance or Letters of Credit (L/C) to secure payments. Never pay 100% upfront to unverified suppliers. On Made-in-China.com, utilize the Escrow payment services which hold funds until the shipping documents and DG certificates are verified. Additionally, hire a third-party inspection agency to perform a 'Pre-shipment Inspection' (PSI) to verify the quantity, packaging integrity, and UN markings.

Many countries classify Nitric Acid as a precursor chemical for explosives, meaning you may need an Import Permit or a 'Dual-Use' certificate from your local government. Check your country's REACH (EU) or TSCA (USA) compliance requirements. Failure to provide the correct HS Code (typically 280800) and hazardous declarations can lead to heavy fines or seizure of the cargo at customs.

Nitric Acid prices are highly sensitive to the cost of Ammonia and Natural Gas. Negotiate based on formula-based pricing if you are a high-volume buyer. For lead times, factor in at least 15-20 days for DG booking and container preparation. Ask for volume discounts at the 20ft FCL (Full Container Load) level, as shipping LCL (Less than Container Load) for hazardous acids is often prohibitively expensive or rejected by carriers.