Description

Trimethylindium (TMI) (CAS 3385-78-2) is a highly pure, organometallic compound with the molecular formula C₃H₉In, widely utilized in advanced material synthesis and semiconductor manufacturing. This volatile, pyrophoric liquid serves as a critical precursor in Metal-Organic Chemical Vapor Deposition (MOCVD) and Atomic Layer Deposition (ALD) processes for producing high-performance indium-containing thin films, such as indium phosphide (InP) and indium gallium arsenide (InGaAs). Packaged under inert gas to ensure stability, our ultra-high-purity grade (≥99.999%) minimizes oxygen and moisture contamination, enabling precise stoichiometric control for optoelectronic and microelectronic applications. Strict QC protocols guarantee batch-to-batch consistency, with optional custom purity and packaging configurations available for epitaxial growth systems.

Properties

• CAS Number: 3385-78-2
• Complexity: 8
• IUPAC Name: trimethylindigane
• InChI: InChI=1S/3CH3.In/h3*1H3;
• InChI Key: IBEFSUTVZWZJEL-UHFFFAOYSA-N
• Exact Mass: 159.9743041
• Molecular Formula: C3H9In
• Molecular Weight: 159.92
• SMILES: C[In](C)C
• Monoisotopic Mass: 159.9743041
• Physical Description: White crystalline solid;
• Vapor Pressure: 2.4 [mmHg]
• Synonyms: Trimethylindium, 3385-78-2, Indium, trimethyl-, EINECS 222-200-9, DTXSID90187490, DTXCID00109981, 222-200-9, ibefsutvzwzjel-uhfffaoysa-n, un3393, trimethylindigane, WR722GMA7H, MFCD00014846, UNII-WR722GMA7H, Trimethylindium, elec. gr., SCHEMBL44124, AKOS015914831, DB-321828, Trimethylindium, elec gr. (99.999%-In), CS-0526987, NS00083542, A821962, Q4463086

Application

Trimethylindium is primarily employed as an indium source in MOCVD growth of III-V semiconductor compounds for LEDs, laser diodes, and high-speed transistors. It enables the fabrication of infrared optoelectronic devices through deposition of InP and InGaAs layers with exceptional crystalline quality. The compound’s volatility and clean decomposition profile make it ideal for low-temperature ALD processes in advanced photovoltaics and quantum dot synthesis.

Safety and Hazards

GHS Hazard Statements

• H250 (66.9%): Catches fire spontaneously if exposed to air [Danger Pyrophoric liquids]
• H260 (77.1%): In contact with water releases flammable gases which may ignite spontaneously [Danger Substances and mixtures which in contact with water, emit flammable gases]
• H261 (22.9%): In contact with water releases flammable gas [Danger Substances and mixtures which in contact with water, emit flammable gases]
• H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H318 (56.6%): Causes serious eye damage [Danger Serious eye damage/eye irritation]

Precautionary Statements

• P210, P222, P223, P231, P231+P232, P233, P260, P264, P264+P265, P280, P301+P330+P331, P302+P335+P334, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P363, P370+P378, P402+P404, P405, and P501

Hazard Classes and Categories

• Pyr. Sol. 1 (66.9%)
• Water-react. 1 (77.1%)
• Water-react. 2 (22.9%)
• Skin Corr. 1B (100%)
• Eye Dam. 1 (56.6%)

If you are interested or have any questions, please contact us at support@atomfair.com

Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.