8.21180

Trimethyl borate

for synthesis

• Synonym(s): Trimethyl borate
• Linear Formula: (CH₃O)₃B
• CAS Number: 121-43-7
• Molecular Weight: 103.91
• MDL number: MFCD00008346
• UNSPSC Code: 12352108
• EC Index Number: 204-468-9
• NACRES: NA.22

Properties

• vapor pressure: 147.9-148 hPa ( 20 °C)
• Quality Level: 200
• assay: ≥99.0% (acidimetric)
• form: liquid
• autoignition temp.: 305 °C
• potency: 6140 mg/kg LD₅₀, oral (Rat); 1845 mg/kg LD₅₀, skin (Rabbit)
• reaction suitability: reagent type: reductant
• refractive index: n20/D 1.3568
• bp: 67-69 °C/1013 hPa
• mp: -31 °C
• transition temp: flash point -11 °C
• density: 0.932 g/cm³ at 20 °C
• InChI: 1S/C3H9BO3/c1-5-4(6-2)7-3/h1-3H3
• InChI key: WRECIMRULFAWHA-UHFFFAOYSA-N

Description

Analysis Note

Assay (acidimetric): ≥ 99.0 %
Density (d 20 °C/ 4 °C): 0.931 - 0.933
Identity (IR): passes test

Safety Information

• pictograms: GHS02,GHS06,GHS08
• signalword: Danger
• hcodes: H225 - H301 + H311 + H331 - H319 - H360FD - H370
• pcodes: P210 - P280 - P301 + P310 - P303 + P361 + P353 - P304 + P340 + P311 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Irrit. 2 - Flam. Liq. 2 - Repr. 1B - STOT SE 1
• target_organs: Eyes
• Storage Class: 3 - Flammable liquids
• wgk_germany: WGK 1
• flash_point_f: 12.2 °F - (own results)
• flash_point_c: -11 °C - (own results)