Methylammonium bromide

Methylammonium bromide
The methylammonium cation	The bromide anion
	Methylammonium bromide crystals
Names
	IUPAC name Methylazanium bromide
	Systematic IUPAC name Methanaminium bromide
	Other names Methylamine hydrobromide;
Identifiers
CAS Number	6876-37-5 ;
3D model (JSmol)	Interactive image ;
ChemSpider	2282899 ;
ECHA InfoCard	100.027.255
EC Number	229-981-5;
PubChem CID	3014526 ;
CompTox Dashboard (EPA)	DTXSID80218868 ;
	InChI InChI=1S/CH5N.BrH/c1-2;/h2H2,1H3;1H Key: ISWNAMNOYHCTSB-UHFFFAOYSA-N;
	SMILES C[NH3+].[Br-];
Properties
Chemical formula	CH3NH3Br
Molar mass	111.96904 g/mol
Appearance	White crystals
Melting point	296 °C (565 °F; 569 K)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	irritant
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Last updated January 27, 2026

Methylammonium bromide in an organic halide with the formula of CH₃NH₃Br. It is the salt of methylammonium and bromide. It is a colorless, water-soluble solid.

The methylammonium halides are precursors to perovskite solar cells, which are being evaluated.^[3]

Lead Detection

In 2019 research was conducted into determining if a solution containing Methylammonium Bromide (MABr) was effective at testing for the presence of lead.^[4] Researchers dumped lead bromide directly into a solution of MABr and observed fluorescence. CH₃NH₃PbBr₃ exhibits fluorescence under illumination with 365nm light. The technique was found only generate fluorescence when lead ions were present. Yan et al. also painted a lead bromide solution onto a paper surface and observed fluorescence when MABr was subsequently added to the paper.

References

↑ "Methylammonium bromide". Greatcell Solar Materials. Retrieved 7 May 2021.
↑ "Sigma-Aldrich". Sigma-Aldrich. Retrieved 5 February 2017.
↑ Li, Hangqian. (2016). "A modified sequential deposition method for fabrication of perovskite solar cells". Solar Energy. 126: 243–251. Bibcode:2016SoEn..126..243L. doi:10.1016/j.solener.2015.12.045.
↑ Yan, J., He, Y., Chen, Y., Zhang, Y., & Yan, H. (2019). CH3NH3Br solution as a novel platform for the selective fluorescence detection of Pb2+ ions. Scientific Reports, 9(1). https://doi.org/10.1038/s41598-019-52431-y

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[MABr-1] "Methylammonium bromide". Greatcell Solar Materials. Retrieved 7 May 2021.

[bromide-2] "Sigma-Aldrich". Sigma-Aldrich. Retrieved 5 February 2017.

[3] Li, Hangqian. (2016). "A modified sequential deposition method for fabrication of perovskite solar cells". Solar Energy. 126: 243–251. Bibcode:2016SoEn..126..243L. doi:10.1016/j.solener.2015.12.045.

[4] Yan, J., He, Y., Chen, Y., Zhang, Y., & Yan, H. (2019). CH3NH3Br solution as a novel platform for the selective fluorescence detection of Pb2+ ions. Scientific Reports, 9(1). https://doi.org/10.1038/s41598-019-52431-y

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