Inorganic Salts

Ammonium Sulfate

Appearance: Colourless transparent orthorhombic crystal, deliquescent
Solution character: Acidic
Solubility: Insoluble in ethanol, acetone or ammonia
Reactivity: Reacts with alkalis to form ammonia

Ammonium Sulfate is a colourless transparent orthorhombic crystal, deliquescent, with an acidic aqueous solution, insoluble in ethanol, acetone or ammonia, and reacting with alkalis to form ammonia. As a nitrogen-containing compound it provides the nitrogen animals need for protein synthesis, growth and development. The lot data shown reports 99.41% against a 99.0% min specification, with residue on ignition 0.20% and lead and arsenic both under limit.

Why buyers specify this grade

Assay 99.0% min with a reported result of 99.41%
Residue on ignition 0.25% max, reported 0.20%
Lead and arsenic both specified at 0.0005 mg/kg max and reported below that
Supplied as particles, which handle and dose better than fine powder
25 KG bags or big bags, 20 MT per 20ft container

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Specification

Colour	Colourless or white (result colourless)
Organisation status	Powder or particles (result particles)
(NH4)2SO4	99.0% min (result 99.41%)
Residue on ignition	0.25% max (result 0.20%)
Lead as Pb	0.0005 mg/kg max
Arsenic as As	0.0005 mg/kg max

Technical data

Appearance: Colourless transparent orthorhombic crystal, deliquescent
Solution character: Acidic
Solubility: Insoluble in ethanol, acetone or ammonia
Reactivity: Reacts with alkalis to form ammonia
Loading: 20 MT per 20ft container

Quality control

Released on sensory requirements, assay, residue on ignition, lead and arsenic with results reported against each index
Lot conclusion reported as qualified
TDS, MSDS and sample COA available for Ammonium Sulfate in the document centre

Where it is used

Nitrogen source supporting protein synthesis, growth and development in animals
General industrial use as a nitrogen-containing salt
Applications requiring an acidic ammonium salt solution

Who buys it

Feed mills and nitrogen supplement formulators
Industrial buyers of ammonium salts
Fertiliser and agricultural distributors

Problems it solves

Nitrogen shortfall limiting protein synthesis in the ration
Caking of a deliquescent salt in humid storage
Dust and flow problems from fine powder, avoided by the particle form
Unverified heavy metal content in a commodity-grade salt

Packing and options

25 KG bags or big bags
Loading quantity 20 MT per 20ft container

How it compares

Urea carries far more nitrogen per kilo but hydrolyses quickly and gives no sulphur. Ammonium sulfate supplies nitrogen together with sulphate in an acidic salt that is stable and easy to handle in particle form, which is why it is used where the acidity or the sulphate is wanted as well as the nitrogen.

Handling and storage

Store dry and sealed, the crystal is deliquescent and will cake in humid air
Do not store or mix with alkalis, which release ammonia on contact
Use the particle grade where dry dosing equipment needs good flow

FAQ