Ferrous sulfate price manufacturers

Ferrous Sulfate is primarily categorized into Industrial Grade, Feed Grade, and Agricultural Grade. When sourcing, you must verify the purity level (typically 98% or higher for high-end use) and the Iron (Fe) content, which is usually around 19.7% for Heptahydrate and 30% for Monohydrate. For water treatment, focus on the insoluble matter percentage, which should be less than 0.2% to prevent equipment clogging. If purchasing for animal feed, ensure the heavy metal limits (Lead, Arsenic, Cadmium) strictly adhere to international safety standards like FAMI-QS or ISO 22000.

The choice depends on your logistics budget and application. Ferrous Sulfate Monohydrate (powder/granular) has a higher iron concentration and a longer shelf life because it is more stable and less prone to caking. While the unit price is higher, it offers lower shipping costs per unit of active ingredient. Ferrous Sulfate Heptahydrate (blue-green crystals) is cheaper per ton but contains more water, making it prone to oxidation and clumping during long-term sea transit. For cross-border buyers, Monohydrate is often more economically feasible due to reduced volume and better stability.

For global trade, ensure the supplier provides a Certificate of Analysis (COA) for every batch. If the product is used in the EU, REACH registration is mandatory. For US markets, check for EPA compliance if used in water treatment. Additionally, because Ferrous Sulfate can be classified as a hazardous material in certain concentrations (Class 9 or Irritant), verify that the supplier provides a Material Safety Data Sheet (MSDS) and follows IMDG codes for maritime safety.

Ferrous Sulfate is often a by-product of Titanium Dioxide production. Therefore, the price is highly sensitive to the Titanium Dioxide market fluctuations. Buyers should look for suppliers with integrated production lines to ensure a stable supply and consistent particle size. Vacuum drying technology is a key indicator of quality for Monohydrate, as it prevents over-heating and ensures the granularity remains uniform, which is critical for automatic dosing systems in factories.

The biggest risk is moisture absorption and oxidation. Ferrous Sulfate Heptahydrate can lose water or turn brown (oxidize to Ferric Sulfate) if exposed to air or heat. Ensure the supplier uses moisture-proof PE inner bags and durable PP woven outer bags. For sea freight, request container desiccant packs and specify 'Below Deck' storage to avoid temperature extremes. Always use Made-in-China.com's inspection services to verify packaging integrity before the ship sails.

Since Ferrous Sulfate is a commodity, prices fluctuate with raw material costs and environmental regulations. To secure the best price, consider signing a long-term framework agreement rather than spot buying. Negotiate based on Incoterms 2020 (FOB vs CIF); often, large suppliers have better domestic freight rates, but you should compare their CIF quote against your own freight forwarder. Mentioning volume-based scaling (e.g., 20ft FCL vs 100 tons) can typically trigger a 5-10% discount.

To ensure payment security, utilize Secured Trading services on Made-in-China.com, which hold funds until shipping documents are verified. Never transfer full payments to private accounts; always use corporate accounts verified by the platform. For first-time orders, it is highly recommended to appoint a third-party inspector (like SGS or Intertek) to conduct a Loading Supervision to ensure the chemical grade matches the COA provided.

Ferrous Sulfate may be subject to anti-dumping duties in certain regions. Check your local HS Code (typically 283321) for specific tariff rates. Ensure the supplier provides a GHS-compliant label in the destination country's language. Accurate documentation, including the Commercial Invoice, Packing List, and Bill of Lading, must match the chemical descriptions exactly to avoid costly customs delays or fines.