Ammonium Sulphate (20.5% Nitrogen) for NPK Fertilizer

Ammonium Sulphate (20.5% Nitrogen) for NPK Fertilizer Basic Info

  • Model NO.: Fertilizer

  • Appearance: Granular

  • Chemical Character: Chemical Neutral

  • Type: Compost

  • Color: White, off-White

  • Molecular Formula: (Nh4)2so4

  • Einecs No: 231-984-1

  • Density: 1.769 g/cm3

  • Classification: Nitrogen Fertilizer

  • Specification: SGS

  • HS Code: 3102210000

  • Application: Nitrogen Fertilizer

  • Infection on Soil: Physiological Neutral

  • Release Type: Slow

  • State: Fine White, Hygroscopic Granules or Crystals.

  • Odor: Odorless

  • CAS No.: 7783-20-0

  • Molar Mass: 132.14 G/Mol

  • Critical Relative Humidity: 79.2%

Ammonium Sulphate (20.5% Nitrogen) for NPK Fertilizer Product Description

Ammonium sulfate (IUPAC-recommended spelling; also ammonium sulphate in British English), (NH4)2SO4, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. It contains 21% nitrogen and 24% sulfur.


White or off-white granule, easily soluble in water. Aqueous solution appears acid. Insoluble in alcohol, acetone and ammonia, Easily deliquescent in the air.

Melting point:: 235 °C                                            Boiling Point:: N/A
Critical relative humidity:: 79.2%                         Flash point:: Non-flammable

Solubility in water

70.6 g/100 mL (0 °C)

74.4 g/100 mL (20 °C)
103.8 g/100 mL (100 °C)
Solubilityinsoluble in acetone, alcoholand ether

Ammonium Sulphate (20.5% Nitrogen) for NPK Fertilizer Specifications:

 Powder and Granular



 Test Result


 No visible mechanical impurities



 20.5% Min


 Free acid (H2SO4)

 0.5 % Max



 1 % Max


Water insoluble

0.1% Max



 Items Standard Test Result Appearance No visible mechanical impurities None Nitrogen 21% Min 21.25 Free acid (H2SO4) 0.2% Max 0.02 Moisture 1 % Max 0.42Water insoluble0.1% Max0.08 

Ammonium Sulphate (20.5% Nitrogen) for NPK Fertilizer Application:-

The primary use of ammonium sulfate is as a fertilizer for alkaline soils. In the soil the ammonium ion is released and forms a small amount of acid, lowering the pH balance of the soil, while contributing essential nitrogen for plant growth.


The main disadvantage to the use of ammonium sulfate is its low nitrogen content relative to ammonium nitrate, which elevates transportation costs.

It is also used as an agricultural spray adjuvant for water soluble insecticides, herbicides, and fungicides. There, it functions to bind iron and calcium cations that are present in both well water and plant cells


Ammonium sulfate has also been used in flame retardant compositions acting much like diammonium phosphate.


As a flame retardant, it lowers the combustion temperature of the material, decreases maximum weight loss rates, and causes an increase in the production of residue or char.

Ammonium Sulphate (20.5% Nitrogen) for NPK Fertilizer Storage:


Kept in dry and ventilating place, avoid moisture, water, rain and fire. Avoid shipment with acid, alkali class, edible orange mix of chemicals. Common transportation tools.

Ammonium Sulphate (20.5% Nitrogen) for NPK Fertilizer Packaging & Delivery

Packaging Details:25kg, 50kg/bag or 1000kgs Jumbo bag, Packed in PP woven bags with PE film liner 25MT/20'FCL
Delivery Detail:10-15 Days after confirm contract

Our Services


1. Mixed container, we can mix different items in one container.

2. Quality control, before shipment, free sample for test. after shipment,  keep sample for 3 years

3. Prompt shipment with professional documents

4. Packing as your request, with photo before shipment.

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