substance

Acetic anhydride

Formula: C4H6O3
CAS: 108-24-7
InChIKey: WFDIJRYMOXRFFG-UHFFFAOYSA-N
ChEBI: CHEBI:36610

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Made by

Acetic anhydride by the ketene route (acetic acid cracking, 50 kt/a, 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

C₂H₂O+C₂H₄O₂givesC₄H₆O₃Product · one process

Routes compared

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

Per 1 kg of Acetic anhydride: 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
Acetic anhydride by the ketene route (acetic acid cracking, 50 kt/a, concept)acetic acid cracking to ketene at 700 C / 36 kPa(a) with triethyl phosphate, ammonia quench, condensation to -5 C, reactive absorption of ketene in acetic acid, two-column distillation, dilute acid recovery; furnace fired with natural gas and the vent gas; 50 kt/a, concept design	flowsheet or hand-writtenDesign maturity: Concept (research)Not independently reviewedDataset review: unreviewed	GLO, 2026	Electric power: 0.0104 kWh LP steam 450 kPa(a): 0.274 kWh MP steam 1500 kPa(a): 0.329 kWh	Glacial acetic acid (boundary feed; e.g. methanol carbonylation, D-003): 1.25 kg Triethyl phosphate (cracking catalyst): 0.00156 kg Ammonia (catalyst neutraliser; ammonia-1 makes it): 0.000291 kg Natural gas to the furnace burners: 0.0401 kg Combustion air: 1.1 kg (free)	C2H4 to the environment: 0 kg CH4 to the environment: 0 kg CO to the environment: 0 kg CO2 to the environment: 0.195 kg KET to the environment: 0 kg	no footprint	–

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.