Basic Product Specifications

Core Functions & Main Applications

1. Agriculture (Core Application: Microelement Fertilizer)

• Iron Supplementation for Crops: Supplies bioavailable ferrous iron, an essential component for chlorophyll synthesis, corrects iron deficiency chlorosis (yellowing leaves with green veins) in fruit trees, vegetables and economic crops.
• Suitable Crops: Apple, citrus, peach, grape, tomato, spinach, and iron-demanding crops (especially alkaline soil-grown plants); also applicable for grain crops like wheat and rice.
• Soil Improvement: Acidic property alleviates soil alkalization, activates soil microelements (e.g., zinc, manganese), improves soil fertility and nutrient availability.

2. Water Treatment Industry

• Flocculant: Used as a coagulant in industrial wastewater and domestic sewage treatment, removes suspended solids, phosphorus and heavy metal ions via flocculation precipitation, low cost and high efficiency.
• Deodorant & Oxygen Scavenger: Serves as an oxygen scavenger for boiler water treatment, prevents pipeline corrosion; also reduces water odor and turbidity in aquaculture water treatment.

3. Industrial Manufacturing

• Raw Material: Produces ferric sulfate, iron oxide red, iron blue pigments and other iron compounds; used in electroplating industry as a metal surface treatment agent.
• Other Uses: Reducing agent in chemical synthesis, mordant in textile printing and dyeing industry, and additive in battery production.

4. Livestock & Poultry Breeding

• Feed Additive: Food-grade ferrous sulfate heptahydrate supplements iron for livestock and poultry, prevents iron deficiency anemia in pigs, chickens and cattle, improves growth rate and breeding efficiency.

Agricultural Application Methods & Dosage

1. Soil Application: 5-10kg per mu, mixed evenly with soil or organic fertilizer before sowing/transplanting; suitable for alkaline/ calcareous soils with severe iron deficiency (can be mixed with ammonium sulfate to enhance iron absorption).
2. Foliar Spraying: Dilute into 0.2-0.5% aqueous solution, spray on crop leaves in morning/evening (avoid high temperature); spray 2-3 times at 7-10 day intervals for chlorosis correction, obvious effect.
3. Root Drenching: Dilute into 0.3-0.6% solution, drench crop root zones for emergency iron supplementation of severely chlorotic plants.
4. Seed Soaking: Dilute into 0.1% solution, soak seeds for 8-12 hours before sowing, improve seed germination rate and seedling iron nutrition.

Core Product Advantages

1. High Bioavailability: Ferrous iron is directly absorbable by crops and livestock, fast-acting for iron deficiency correction, better effect than ferric iron compounds.
2. Multi-Purpose: Integrates agricultural micro-fertilizer, water treatment flocculant, industrial raw material and feed additive attributes, wide application scenarios.
3. Cost-Effective: Mature industrial production process (by-product of sulfuric acid pickling), abundant supply, low price and high cost performance.
4. Stable Performance: High purity, fixed iron content, stable chemical properties under sealed storage; water-soluble, easy to apply and operate.
5. Eco-Friendly: No toxic and harmful by-products, biodegradable in soil, no residual pollution; low dosage in agriculture, little impact on soil ecosystem.

Storage & Handling Notes

1. Sealed Storage: Store in a dry, cool, well-ventilated warehouse, sealed in plastic bags/drums to avoid contact with air and moisture (prevents oxidation and efflorescence).
2. Avoid Mixing: Do not store or mix with alkaline substances (lime, plant ash, ammonia water), oxidants and edible products to prevent chemical reaction and cross-contamination.
3. Anti-Oxidation: Keep away from wet air and direct sunlight; use as soon as possible after opening the package, seal the remaining product tightly.
4. Safety Operation: Wear protective gloves, goggles and dust mask during operation; avoid direct contact with eyes and skin (acidic, may cause slight irritation); rinse with plenty of water immediately if splashed.
5. Shelf Life: 24 months under sealed and dry storage conditions; oxidized products (brownish yellow) have reduced effectiveness and are not recommended for use.
6. Transportation: Transport in covered vehicles, avoid rain, snow and moisture; light loading and unloading to prevent package damage.

Industrial Classification & Attribute

Common Customized Grades (for Export/ Specific Scenarios)

1. Agricultural Grade: FeSO₄·7H₂O ≥98%, for crop fertilization and soil improvement
2. Industrial Grade: FeSO₄·7H₂O ≥99%, for water treatment and chemical synthesis
3. Food/Feed Grade: FeSO₄·7H₂O ≥99.5%, for feed additives and food processing (meets food safety standards)
4. Crystalline Powder: Fine powder form, easy for foliar spraying and solution preparation
5. Granular Type: Pelletized form, low dust, easy for soil mechanical application (customized)

Key Industry Term Explanation

• Green Vitriol: The common English name for ferrous sulfate heptahydrate, widely used in industrial and agricultural trade documents.
• Iron Deficiency Chlorosis: A common crop nutrient deficiency symptom caused by insufficient available iron, the main agricultural problem solved by this product.
• Crystal Water: The 7H₂O in the formula, an integral part of the crystal structure, lost only when heated to 300℃ (forming anhydrous ferrous sulfate).