trimethylborane

• ChemBase ID: 130006
• Molecular Formular: C3H9B
• Molecular Mass: 55.91456
• Monoisotopic Mass: 56.07973069
• SMILES: CB(C)C
• Canonical SMILES: CB(C)C
• InChI: InChI=1S/C3H9B/c1-4(2)3/h1-3H3
• InChIKey: WXRGABKACDFXMG-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: trimethylborane
• IUPAC Traditional name: trimethylborane
• Synonyms: Trimethylboron; trimethylborine; trimethylboron; Trimethylborane; 三甲基硼

Database IDs

• CAS Number: 593-90-8
• EC Number: 209-816-3
• MDL Number: MFCD00058727
• PubChem SID: 162224292; 24869894
• PubChem CID: 68979
• Chemspider ID: 62201
• Wikipedia Title: Trimethylborane

CALCULATED PROPERTIES

• H Acceptors: 0
• H Donor: 0
• LogD (pH = 5.5): 1.829
• LogD (pH = 7.4): 1.829
• Log P: 1.829
• Molar Refractivity: 16.6473 cm^3
• Polarizability: 8.338507 Å^3
• Polar Surface Area: 0.0 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: slight, Highly reactive in water
• Apperance: Colorless gas or liquid; gas
• Melting Point: -161.5 °C(lit.); -161.5°C
• Boiling Point: -20.2 °C(lit.); -20.2°C
• Auto Ignition Point: -40 °C
• Density: 0.625 g/cm^3 at -100 °C

Safety Information

• European Hazard Symbols: Corrosive (C); Flammable (F)
• UN Number: 3160
• German water hazard class: 1
• Hazard Class: 2.3
• Risk Statements: 17-34; R17 R34
• Safety Statements: 7-23-26-36/37/39-43-45; S7 S23 S26 S36/37/39 S43 S45
• GHS Pictograms: GHS04; GHS05
• GHS Signal Word: Danger
• Main Hazard: Spontaneously flammable in air; causes burns
• GHS Hazard statements: H280-H314
• GHS Precautionary statements: P280-P305 + P351 + P338-P310-P410 + P403
• Personal Protective Equipment: Faceshields, Gloves, Goggles, half-mask respirator (US), multi-purpose combination respirator cartridge (US)
• RID/ADR: UN 3160 2.3

Product Information

• Purity: ≥98.35%
• Grade: electronic grade
• Impurities: <1 ppm Oxygen (O2); <1.5% Dimethylethylborane [B(CH3)2C2H5]; <10 ppm Carbon dioxide (CO2); <10 ppm Nitrogen (N2); <100 ppm Methane (CH4); <1000 ppm Trimethylamine (TMA); <50 ppm Hydrogen (H2)
• Linear Formula: B(CH3)3

DETAILS

Sigma Aldrich - 463094

Application
Precursor to boron carbide thin films by chemical vapor deposition (CVD).1
Trimethylboron is used as an organometallic precursor for the CVD of boron-carbon containing films and as a boron source in the deposition of borophosphosilicate glass (BPSG).
Packaging
10 g in ss cylinder
Recommended products
Stainless steel regulators Z527416 or Z527424 are recommended.