substance

Methylmagnesium bromide

A Grignard reagent, traded as a solution in an ether (methylmagnesium-bromide-1: 35 wt% in 2-methyltetrahydrofuran). No ChEBI entry found (EBI OLS search by InChIKey and PubChem cross-references, 2026-11-05).

Formula: CH3BrMg
CAS: 75-16-1
InChIKey: NXPHGHWWQRMDIA-UHFFFAOYSA-M

Show in the process graph →

Made by

Methylmagnesium bromide in 2-MeTHF by semi-batch Grignard reaction with methyl bromide gas dosing (4400 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

CH₃BrMg+CH₃BrgivesC₂H₆+MgBr₂Reactant · Wurtz coupling of the Grignard reagent with methyl bromide · one process
Mg+CH₃BrgivesCH₃BrMgProduct · Grignard formation from magnesium and methyl bromide · one process

Routes compared

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

Per 1 kg of Methylmagnesium 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
Methylmagnesium bromide in 2-MeTHF by semi-batch Grignard reaction with methyl bromide gas dosing (4400 t/a)Batch plant: magnesium turnings in dry 2-MeTHF under nitrogen, methyl bromide gas dosed at 318 K over 5.75 h (5 % for the initiation, a 30 min hold, the rest; semi-batch, 1.05 mol Mg per mol MeBr), filtration of the excess magnesium; 5000 kg of 35 wt% solution per batch, 880 batches a year on a dedicated train	flowsheet or hand-writtenDesign maturity: Concept (research)Not independently reviewedDataset review: unreviewed	GLO, 2026	Electric power: 0.00954 kWh LP steam 350 kPa(a) (hot-water loop of R-101's jacket and the vaporiser E-101): 0.0277 kWh	Magnesium turnings (merchant): 0.0775 kg Dry 2-MeTHF (merchant): 0.648 kg Liquefied methyl bromide (merchant): 0.288 kg Nitrogen for inerting R-101, pressing the slurry to F-101 and blowing the cake: 0.0075 kg Iodine activator for the magnesium: 0.00008 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.