Ferrous sulfate monohydrate

Buyers must prioritize the Iron (Fe) content, which typically ranges from 30% to 32% for the monohydrate form. Additionally, monitor the heavy metal limits (such as Lead, Arsenic, and Cadmium), especially for feed or fertilizer grades. The particle size (powder vs. granular) should be selected based on the application—granular forms are preferred for mechanical spreading in agriculture to prevent caking and dust.

For agricultural use, ensure compliance with FAMI-QS or ISO 9001 standards. If the product is intended for water treatment, it should meet ANSI/NSF Standard 60. Always request a Certificate of Analysis (COA) for every batch and verify the Material Safety Data Sheet (MSDS) to ensure proper handling and storage protocols are documented.

Ferrous Sulfate Monohydrate is widely used as a nutritional supplement in animal feed to prevent anemia and as a soil conditioner/fertilizer to correct iron chlorosis in plants. In industrial sectors, it serves as a chromate reducer in cement and a coagulant in wastewater treatment to remove phosphates and odors.

Pricing is highly sensitive to raw material costs (sulfuric acid and iron scrap) and energy prices used in the dehydration process. To optimize costs, consider bulk shipments (25kg bags vs. 1000kg jumbo bags). Purchasing during the agricultural off-season can often yield a 5-10% price reduction compared to peak demand periods.

The primary risk is moisture absorption and caking. Although the monohydrate form is more stable than the heptahydrate, it must be shipped in moisture-proof, UV-protected PP/PE bags. Ensure the supplier uses pallets with shrink-wrap to prevent bag breakage during transit, which can lead to oxidation and product degradation.

Utilize the Secured Trading Service on Made-in-China.com to protect your payment until delivery is confirmed. Negotiate for a 30% deposit and 70% balance against the Bill of Lading (B/L). For new suppliers, insist on a pre-shipment inspection (PSI) by third parties like SGS or Intertek to verify the iron content and purity levels before the cargo leaves the port.

Ferrous Sulfate is generally classified under HS Code 283329. While not typically classified as a dangerous good for sea freight in small quantities, you must check IMDG regulations for bulk shipments. Ensure the supplier provides a DGM report (Dangerous Goods Management) to facilitate smooth customs clearance and avoid port delays.