294136

Tetraoctylammonium bromide

98%

• Synonym(s): TOAB
• Linear Formula: [CH₃(CH₂)₇]₄N(Br)
• CAS Number: 14866-33-2
• Molecular Weight: 546.79
• Beilstein/REAXYS Number: 4169176
• EC Number: 238-936-9
• MDL number: MFCD00011863
• UNSPSC Code: 12352107
• PubChem Substance ID: 24857704
• NACRES: NA.22

Properties

• Quality Level: 200
• assay: 98%
• form: solid
• mp: 95-98 °C (lit.)
• SMILES string: [Br-].CCCCCCCC[N+](CCCCCCCC)(CCCCCCCC)CCCCCCCC
• InChI: 1S/C32H68N.BrH/c1-5-9-13-17-21-25-29-33(30-26-22-18-14-10-6-2,31-27-23-19-15-11-7-3)32-28-24-20-16-12-8-4;/h5-32H2,1-4H3;1H/q+1;/p-1
• InChI key: QBVXKDJEZKEASM-UHFFFAOYSA-M

Description

General description

Tetraoctylammonium bromide is an organic surface coating agent commonly used to control the size and shape during nanoparticle synthesis.

Application

Tetraoctylammonium bromide (TOAB) has been used as a phase transfer agent to transfer gold tetrachloroaurate from aqueous phase to organic phase in a two-phase (organic-aqueous) method of alkanethiol stabilized gold nanoparticle synthesis. It is also used to prepare TOAB-capped gold nanoparticles, which shows well-defined plasmon absorption compared to thiol-capped nanoparticles.

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H315,H318
• pcodes: P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P362 + P364
• Hazard Classifications: Eye Dam. 1 - Skin Irrit. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: 213.8 °F - closed cup
• flash_point_c: 101 °C - closed cup
• ppe: dust mask type N95 (US), Eyeshields, Gloves