substance

Benzyl bromide

Formula: C7H7Br
CAS: 100-39-0
InChIKey: AGEZXYOZHKGVCM-UHFFFAOYSA-N
ChEBI: CHEBI:59858

Show in the process graph →

Made by

Benzyl bromide by light-driven semi-batch bromination of toluene, HBr absorption and batch distillation (1000 t/a)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

C₇H₇Br+Br₂givesC₇H₆Br₂+HBrReactant · Benzyl bromide to benzal bromide (series bromination) · one process
C₇H₈+Br₂givesC₇H₇Br+HBrProduct · Toluene to benzyl bromide (side-chain bromination) · one process

Routes compared

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

Per 1 kg of Benzyl bromide: 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
Benzyl bromide by light-driven semi-batch bromination of toluene, HBr absorption and batch distillation (1000 t/a)Batch plant: bromine dosed over 5 h into 4 mol of toluene per mol at 363 K under lamps (semi-batch), the HBr vented as it forms through a reflux and a brine vent condenser and absorbed to 48 wt% acid; the crude stripped of toluene at 15 kPa(a) and distilled at 2 kPa(a) in one batch still with a packed column of 5 theoretical stages (forerun at reflux 2 recycled with the toluene, 2 % purged; main cut at reflux 0.5); 887.3 kg per batch, 1127 batches a year on a dedicated train	flowsheet or hand-writtenDesign maturity: Concept (research)Not independently reviewedDataset review: unreviewed	GLO, 2026	Electric power: 0.16 kWh LP steam 450 kPa(a) (R-101 heat-up, still C-101): 0.431 kWh	Toluene make-up (btx-1): 0.614 kg Bromine (bromine-1): 1.03 kg Process water (HBr absorber): 0.565 kg Nitrogen for inerting R-101 and C-101, breaking the vacuum and padding the receivers: 0.0282 kg	none	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.