Synonym: Trimethylbismuthine, Trimethyl bismuthine, Bismuth trimethyl, TMBi, BiMe3

CAS Number 593-91-9 | EC Number 209-817-9

BiMe3 chemical structure

Product codeBI3919
CAS number593-91-9
Assay (purity)99.9%
Metal purity>99.99%-Bi
Molecular weight254.08 g/mol
Boiling point110 °C (230 °F)
Appearancecolorless liquid
Sensitivitymoisture, heat
Storage temperature2-8°C
Molecular formulaC3H9Bi
Linear formulaBi(CH3)3
Packagingglassware/metal containers/bubblers

Trimethylbismuth and oxygen (O2) mixture reaction has been successfully used to grow the rod-like structures of bismuth oxide on a silicon substrate without using any catalyst. This product, trimethylgallium, and arsine were used as precursor sources for the growth of GaAsBi alloys grown on GaAs substrate by conventional metalorganic vapor phase epitaxy technique. InAs and InAsBi have been grown by atmospheric pressure organometallic vapor phase epitaxy over a broad temperature range from 600 to as low as 275° C. Trimethylindium, arsine, and trimethylbismuth were used as precursors for most experiments. See links below

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing BI3919 contact us at

Safety information

Hazardous class4.3
Packing groupII
PictogramsGHS02 GHS07 GHS06
Signal wordDANGER
Hazard statementsH225-H302-H311-H314-H318
Precautionary statementsP210-P233-P240-P241-P242-P243-P260-P264-P270-P280-P301+P312-P301+P330+P331-P302+P352-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P361-P363-P370+P378-P403+P235-P405-P501
In TSCA registryNo (research and development usage only)


Certificates of Analysis (CoA)

If you don’t see the needed lot of Trimethylbismuth below please contact customer support at

Lot# 602-001/040 Lot# 602-001-033

External identifiers for TMBi

Pubchem CID11651
IUPAC Nametrimethylbismuthane
InchI IdentifierInChI=1S/3CH3.Bi/h3*1H3;

Known applications and external links

With Trimethylbismuth other customers often ask:

Ereztech synthesizes and sells additional BI-compounds.

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