Calcium nitrate tetrahydrate

Buyers must prioritize the purity level, typically requiring 99% min for industrial or laboratory use and 98% min for agricultural grades. The Nitrogen (N) content should be approximately 11.7% and Calcium (Ca) content around 16.7%. Additionally, check the water-insoluble matter, which should be ≤0.01% for high-end applications to prevent clogging in irrigation systems. The pH value of a 5% aqueous solution should ideally fall between 5.0 and 7.0.

Calcium Nitrate Tetrahydrate is widely used in agriculture as a water-soluble fertilizer to prevent calcium deficiency in crops. In the construction industry, it serves as a concrete setting accelerator and long-term strength enhancer. It is also critical in wastewater treatment for odor control (prevention of hydrogen sulfide formation) and in the latex dipping process as a coagulant for rubber gloves and balloons.

As a chemical product, it must be accompanied by a valid Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS). For international trade, ensure the supplier complies with REACH regulations (for EU markets) and provides a Certificate of Analysis (COA) for every batch. Since it is an oxidizer (UN Class 5.1), it must adhere to IMDG codes for maritime transport to ensure safety during transit.

The product should appear as colorless, transparent crystals. Buyers should be wary of caking or clumping, which indicates poor moisture control during storage. Because it is highly deliquescent (absorbs moisture from the air), the packaging integrity is paramount. Request a solubility test; the crystals should dissolve completely in water without leaving visible residue.

Calcium Nitrate Tetrahydrate is classified as a Dangerous Good (Class 5.1, UN 1454). You must ensure the supplier is licensed to export hazardous chemicals and uses UN-approved packaging (typically 25kg PP/PE bags with inner liners). For shipping to countries like the US or Europe, use freight forwarders experienced in DG (Dangerous Goods) handling to avoid customs seizures or port fines.

Utilize secure payment methods and consider third-party inspections (such as SGS or Intertek) before the balance payment is made to verify the chemical composition. When sourcing via Made-in-China.com, prioritize Audited Suppliers who have undergone comprehensive on-site verification of their manufacturing capabilities and financial standing.

Chemical prices are highly sensitive to raw material costs (ammonia and limestone) and energy prices. Negotiate based on volume tiers; for example, purchasing in full container loads (FCL) can significantly reduce the per-unit shipping cost. Ask for a validity period for the quote, as chemical market prices can fluctuate weekly.

The most common pitfall is mislabeling, which leads to heavy fines at customs. Ensure all labels are in the language of the destination country and include required hazard symbols. Another risk is moisture damage; insist on the use of desiccants in the container and high-quality moisture-proof bags to prevent the product from liquefying during long sea voyages.