substance

Thionyl chloride

Formula: SOCl2
CAS: 7719-09-7
InChIKey: FYSNRJHAOHDILO-UHFFFAOYSA-N
ChEBI: CHEBI:29290

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Made by

Thionyl chloride from sulfur, chlorine and SO2 over activated carbon (3.75 t/h)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

Cl₂S+SO₂+Cl₂in equilibrium with2SOCl₂Product · one process
SOCl₂+4NaOHgivesNa₂SO₃+2NaCl+2H₂OReactant · one process

Routes compared

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

Per 1 kg of Thionyl chloride: 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
Thionyl chloride from sulfur, chlorine and SO2 over activated carbon (3.75 t/h)Sulfur chlorinated to S2Cl2/SCl2 in the boundary; SCl2 + SO2 + Cl2 over activated carbon at 398-473 K; condensation, degassing and SO2/Cl2 recycle; distillation with sulfur; caustic purge scrubber; 3.75 t/h thionyl chloride	flowsheet or hand-writtenDesign maturity: Concept (research)Not independently reviewedDataset review: unreviewed	GLO, 2026	Electric power: 0.00471 kWh LP steam 500 kPa(a): 0.422 kWh	Molten sulfur (merchant sulfur from refinery or gas-plant sulfur recovery): 0.136 kg Chlorine gas (chlor-alkali-1): 0.598 kg Liquid sulfur dioxide (merchant; sulfur burning): 0.274 kg Caustic soda 50 wt% (chlor-alkali-1): 0.0211 kg Process water (scrubber dilution): 0.0844 kg	CL2 to the environment: 0.00000167 kg S2CL2 to the environment: 0.0000000000174 kg SCL2 to the environment: 0.0000000272 kg SO2 to the environment: 0.00000527 kg SOCL2 to the environment: 0.000000231 kg	not published	–

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.