substance

Urea

Formula: CH4N2O
CAS: 57-13-6
InChIKey: XSQUKJJJFZCRTK-UHFFFAOYSA-N
ChEBI: CHEBI:16199

Show in the process graph →

Made by

Urea by CO2 stripping, total recycle, prilling (2000 t/d, concept)Main productConcept · not reviewed

Used by

No process in the Atlas uses this yet.

When a process with this chemical is added to the library, it appears here.

Takes part in

2CH₄N₂Oin equilibrium withC₂H₅N₃O₂+NH₃Reactant · one process
2NH₃+CO₂in equilibrium withCH₄N₂O+H₂OProduct · one process
CH₄N₂O+H₂Ogives2NH₃+CO₂Reactant · one process

Routes compared

One route in the Atlas makes Urea: nothing to compare yet. A comparison appears when a second route is added.

Per 1 kg of Urea: inventory from each route's LCI dataset, unallocated; footprints per the functional unit of their own LCA.

Route	Tier, design maturity, review status	Geography, year	Energy	Feedstocks	Key emissions	Footprint	Comparability
Urea by CO2 stripping, total recycle, prilling (2000 t/d, concept)CO2 stripping total-recycle urea synthesis (140 bar, N/C 2.8), LP recirculation, two-stage vacuum evaporation, forced-draft prilling with wet scrubbing, process condensate desorption/hydrolysis; electric CO2 compressor; 2000 t/d	flowsheet or hand-writtenDesign maturity: Concept (research)Not independently reviewedDataset review: unreviewed	GLO, 2026	Electric power: 0.0961 kWh MP steam 2400 kPa(a): 0.408 kWh	Liquid ammonia from the ammonia plant: 0.565 kg CO2 from the ammonia plant CO2 removal: 0.738 kg Passivation air (ambient): 0.0139 kg (free) Prilling air (ambient): 8.48 kg (free)	CO2 to the environment: 0.0000904 kg NH3 to the environment: 0.000269 kg UREA to the environment: 0.000233 kg	0.00009 kg CO2-eq0.0000662 to 0.00012 (95 %)Climate change per 1 kg urea	–

ISO 14044 requires a critical review (by a panel of interested parties, ISO/TS 14071) of a comparative assertion intended to be disclosed to the public. These routes are listed side by side for screening; a statement that one is better than another needs that review. None of these routes has had such a review.