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(NH₄)₂SO₄ · N + S Fertiliser 21% N · 24% S · 100% Water-Soluble Sourced from India & China

Ammonium Sulphate

FSiix Resources sources and trades Ammonium Sulphate ((NH₄)₂SO₄) — a white, free-flowing, fully water-soluble salt that supplies nitrogen as fast-acting ammonium and sulphur as sulphate in a single product. Supplied from certified production in India and China across crystalline and granular grades, our ammonium sulphate is assayed for nitrogen, sulphur, moisture, and free acidity against Fertiliser Control Order (FCO) requirements and buyer-specified industrial limits, and moves in 50 kg bags, jumbo bags, and bulk to agricultural distributors, fertiliser blenders, and chemical processors worldwide.

TOTAL NITROGEN (N)21% min.
SULPHUR (S)24%
WATER SOLUBILITY100%
ORIGINIndia & China
OVERVIEW

Nitrogen and Sulphur in One Water-Soluble Salt

FSiix's ammonium sulphate programme draws on certified production from India and China, giving buyers two qualified origins for the same specification. The product is recovered as a by-product of coke-oven gas scrubbing and caprolactam manufacture, or made synthetically by reacting ammonia with sulphuric acid; both routes deliver a consistent crystalline product when liquor chemistry and crystallisation are tightly controlled.

Its 21% nitrogen and 24% sulphur content make ammonium sulphate the preferred nitrogen source for sulphur-deficient soils, rice and wheat, and alkaline soils where its acidifying effect is beneficial. Every consignment is assayed for nitrogen, sulphur, moisture, and free acidity before certification and dispatch.

KEY PROPERTIES
Total Nitrogen (N)21% min. · ammoniacal form
Sulphur (S)24% · sulphate form
Water Solubility100%
Moisture0.5% max. (typical)
FormCrystalline / granular, free-flowing
Packing50 kg PP/PE bags, jumbo bags, bulk
HOW IT'S PRODUCED

From Ammonia & Sulphuric Acid to Certified Ammonium Sulphate

FSiix's ammonium sulphate supply runs under controlled crystallisation and batch-certified quality control across our India and China origins.

01 — FEED ROUTE

By-Product Recovery & Synthesis

Ammonium sulphate is recovered from coke-oven gas scrubbing and caprolactam production, or manufactured synthetically by reacting ammonia with sulphuric acid. Feed ratios and pH are controlled to produce a clean, near-neutral mother liquor for crystallisation.

02 — CRYSTALLISATION

Evaporation & Crystal Growth

The saturated liquor is evaporated and cooled in crystallisers to grow uniform crystals. Centrifuges separate the crystals from the mother liquor, which is recycled to maximise yield and limit impurity build-up.

03 — DRYING & QC RELEASE

Drying, Screening & Certification

Crystals are dried to a moisture ceiling of 0.5%, screened to target size, and conditioned where required. Every batch is assayed for nitrogen, sulphur, moisture, and free acidity before certification and dispatch.

END-USE MARKETS

Where Ammonium Sulphate Is Used

FSiix's ammonium sulphate serves agricultural distributors, fertiliser blenders, and industrial processors, matched to the grade each application requires.

Crop Nutrition

  • Rice & wheat top-dressing
  • Pulses, oilseeds & sugarcane sulphur supply
  • Correction of sulphur-deficient soils

Alkaline Soil Management

  • Gradual pH reduction in calcareous soils
  • Acid-loving crop programmes
  • Improved micronutrient availability

Fertiliser Blending

  • Non-superphosphate blend component
  • NPK blending programmes
  • Granular or crystalline blend feedstock

Industrial Processing

  • Chemical synthesis intermediate
  • Textile & timber fire-retardant treatment
  • Process chemical supply

Food & Laboratory Use

  • Yeast nutrient & dough conditioner (E517)
  • Protein precipitation in laboratory work
  • Grade specification on request
WHY SOURCE THROUGH FSIIX

Three Pillars That Distinguish Our Ammonium Sulphate

Dual-Origin Supply

India and China production give buyers two qualified sources of the same specification, reducing single-origin risk and supporting tender and offtake planning.

Grade & Form Flexibility

Crystalline and granular grades let customers match particle size and purity to their blending line, spreader, or process requirements.

Certified Quality & Logistics

Each batch is assayed against FCO requirements or buyer specifications with certificates of analysis, shipped in bags, jumbo bags, or bulk with full documentation.

MARKET CONTEXT

A Sulphur-Led Nitrogen Opportunity

Sulphur deficiency is increasingly recognised across major cropping regions, and ammonium sulphate's combined 21% nitrogen and 24% sulphur content makes it a targeted solution, with India and China both central to global ammonium sulphate production and consumption.

PRICING IS QUOTED, NOT LISTED

Ammonium sulphate pricing tracks ammonia and sulphur feedstock costs, grade, and packing format, and varies between agricultural and industrial specifications, so we don't publish a static reference price here — anything printed on a page would likely be stale within days.

Contact our trading desk for a current FOB quotation against your required grade, volume, packing preference, and destination port.

PRODUCT SPECIFICATIONS

Full Technical Data

21% min. N
Total Nitrogen
24% S
Sulphur Content
132.14g/mol
Molecular Weight
100% soluble
Water Solubility
Chemical Formula(NH₄)₂SO₄
Molecular Weight132.14 g/mol
CAS Number7783-20-2
AppearanceWhite crystalline, free-flowing solid / granules
Total Nitrogen (N)21% min. (ammoniacal)
Sulphur (S)24% (sulphate)
Moisture0.5% max. (typical)
Free AcidityPer buyer specification
pH (solution)5.0–6.0
Water Solubility100%
Granule Size0–4.5 mm (typical, buyer-specified)
StandardFertiliser Control Order (FCO), India · industrial grades per buyer spec
Transport ClassificationNot regulated as a dangerous good
Packing50 kg PP/PE bags · jumbo bags (1 MT) · bulk
OriginIndia & China
RELATED COMMODITIES

Need Ammonium Sulphate for Your Programme?

Tell us your required grade, volume, packing preference, and destination port, and the FSiix trading desk will respond with sourcing options and current pricing.