Procurement GuideBy Amit Shah, Plant Operations Lead
Zinc Sulphate Monohydrate Manufacturer in India: Commercial Sourcing, Quality Audits & Purity Standards
Published on 2026-09-1814 mins readFCO 1985 & ISO 9001:2015 Verified
Executive Summary & Key Takeaways
A definitive procurement manual for institutional buyers. How to evaluate an Indian Zinc Sulphate manufacturer, check FCO Form-A compliance, and verify AAS assays.
Table of Contents (Jump to Section)
When chemical distributors, multinational fertilizer blenders, and government agricultural federations search for a Zinc Sulphate Monohydrate manufacturer in India, navigating supplier credentials, heavy metal boundaries, and production capacity is paramount. India, specifically the state of Gujarat, has emerged as the global manufacturing powerhouse for agricultural-grade and feed-grade Zinc Sulphate.
1. The Manufacturing Landscape: Why Gujarat Leads Global Production
Gujarat accounts for over 65% of India's total chemical synthesis and export throughput. Key structural advantages include:- •Proximity to Major Cargo Sea Ports: Direct multi-lane highway connectivity to Mundra Port and Kandla Port ensures ocean container consignments reach Western Europe, the Middle East, Southeast Asia, and Africa in record transit times.
- •Access to High-Purity Raw Materials: Continuous access to primary zinc ash, zinc dross, and sulfuric acid streams enables consistent production of high-assay salts.
- •Dedicated Chemical Industrial Belts: Industrial infrastructure in Ahmedabad, Panoli, and Dahej provides dedicated effluent treatment, environmental compliance, and reliable high-capacity crystallization facilities.
2. Critical Quality Benchmarks: FCO vs Export Specifications
Under the statutory Fertilizer Control Order (FCO 1985) and international procurement standards, a reputable manufacturer must guarantee the following specifications for Zinc Sulphate Monohydrate 33%:| Analytical Parameter | Indian FCO Standard | International Agronomic Standard | Auron Factory Guarantee |
|---|---|---|---|
| Elemental Zinc (Zn) | 33.0% minimum | 33.0% minimum | 33.2% – 33.5% |
| Elemental Sulphur (S) | 15.0% minimum | 15.0% minimum | 15.2% – 15.6% |
| Lead (Pb) ceiling | 30.0 ppm max | 15.0 ppm max | < 8.0 ppm |
| Cadmium (Cd) ceiling | 25.0 ppm max | 10.0 ppm max | < 3.5 ppm |
| Arsenic (As) ceiling | 100.0 ppm max | 5.0 ppm max | < 2.0 ppm |
| Water Insoluble Matter | 1.0% maximum | 0.2% maximum | < 0.12% |
| Physical Appearance | Snow White Powder / Granular | Free Flowing, Low Dust | 100% Free Flowing |
3. Factory Audit Checklist for Commercial Procurement Officers
Before signing annual supply contracts, commercial procurement teams should verify four vital credentials: 1. FCO Form-A Manufacturing License: Valid license issued by the Department of Agriculture authorizing chemical processing. 2. In-House Atomic Absorption Spectrophotometry (AAS): On-site testing capability to detect trace heavy metals in parts per million (PPM) before bag dispatch. 3. Continuous Fluidized Bed Drying: Automated drying technology that eliminates surface moisture without degrading crystal lattice integrity. 4. Scalable Monthly Capacity: Proven throughput of at least 1,500 to 3,000 Metric Tons per month to cushion seasonal agricultural demand spikes.4. Custom Packaging Configurations & Palletization
Auron supplies Zinc Sulphate Monohydrate in 25 kg, 50 kg multi-layer HDPE bags with heat-sealed 50-micron poly liners, and 1,000 kg (1 MT) FIBC jumbo bags with bottom discharge spouts. Pallets are heat-treated according to ISPM-15 export regulations.Direct Manufacturer SourcingAuron Fertilizers · Ahmedabad, Gujarat
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