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Agrochemicals and fertilisers

Ammonium sulfate vs urea

Ammonium sulfate (H8N2O4S, CAS 7783-20-2) and urea (CH4N2O, CAS 57-13-6) are both listed under fertilizers and micronutrients.

Ammonium sulfate has a molar mass of 132.14 g/mol, urea 60.06 g/mol.

Measured melting points are 280 °C for ammonium sulfate and 132.7 °C for urea.

Ammonium sulfate carries the GHS signal word Warning, while no signal word is recorded for urea in our records.

On CompoundList, 623 suppliers list ammonium sulfate and 338 suppliers list urea.

Data last updated 7 October 2026

Ammonium sulfate and urea compared side by side
Ammonium sulfate chemical structure, H8N2O4S, CAS 7783-20-2
Ammonium sulfate
Urea chemical structure, CH4N2O, CAS 57-13-6
Urea
Identity
Name in our databaseAmmonium sulfateUrea
CAS number7783-20-257-13-6
Molecular formulaH8N2O4SCH4N2O
Molar mass132.14 g/mol60.06 g/mol
IUPAC namediazanium, sulfateurea
EC number231-984-1200-315-5
Physical properties
AppearanceWhite or brown orthorhombic crystalsWhite crystals or powder
Melting point280 °C132.7 °C
Boiling pointNot recordedDecomposes
Density1.77 g/cm³G/cm³
SolubilityIn water, 76.4 g/100 g water at 25 °CIn water, 5.45 × 10⁺⁵ mg/l @ 25 °C
LogP (octanol/water)Computed from the structure-0.59-0.98
Safety (GHS)
Signal wordWarningNone
Pictograms
GHS07: Harmful or irritant
None
Hazard statements
  • H302 Harmful if swallowed.
  • H315 Causes skin irritation.
  • H319 Causes serious eye irritation.
  • H335 May cause respiratory irritation.
No hazard statements recorded
Uses and classification
Uses and functions
  • Surfactants and cleansing agents
  • Thickeners
  • Fertilizers and micronutrients
  • NMR chemical shift reference compound
  • Agrochemical
  • Fertilizer
  • Humectants
  • Skin conditioning agents
  • Hair conditioning agents
  • Fertilizers and micronutrients
  • Leavening and processing aids
  • Daphnia magna metabolite
CategoryInorganic chemicals › Sulfates and sulfur saltsAgrochemicals › Fertilizers and micronutrients
HS code310221Ammonium sulphate310210Urea, whether or not in aqueous solution
Market on CompoundList
Suppliers623 suppliers338 suppliers
Supplier countries61 countries, most in India, United States, China43 countries, most in United States, Canada, China
Price rangeOnly prices set by suppliers who manage their own profilePrice on requestPrice on request

Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.

Ammonium sulfate
Urea

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