Tris(trimethylsilyl) Phosphate , ≥97.0% , 10497-05-9

Synonym(s):
Phosphoric acid tris(trimethylsilyl ester)

CAS NO.：10497-05-9

Empirical Formula: C9H27O4PSi3

Molecular Weight: 314.54

MDL number: MFCD00008267

EINECS: 234-028-1

PRODUCT Properties

• Melting point: 3-4 °C (lit.)
• Boiling point: 228-229 °C/720 mmHg (lit.)
• Density: 0.945 g/mL at 25 °C (lit.)
• vapor pressure: 23.3hPa at 20℃
• refractive index: n20/D 1.409(lit.)
• Flash point: 76 °F
• storage temp.: under inert gas (nitrogen or Argon) at 2-8°C
• pka: 23-25(at 25℃)
• form: liquid
• Specific Gravity: 0.959
• color: Colorless to Light yellow to Light orange
• Water Solubility: 935.5μg/L at 20℃
• Hydrolytic Sensitivity: 8: reacts rapidly with moisture, water, protic solvents
• BRN: 1794624
• LogP: 4.72 at 20℃
• CAS DataBase Reference: 10497-05-9(CAS DataBase Reference)
• EPA Substance Registry System: Silanol, trimethyl-, phosphate (3:1) (10497-05-9)

Description and Uses

Tris(trimethylsilyl) phosphite (TMSPi) is a film-forming additive for high voltage cathode material in lithium-ion batteries. Tris (trimethylsilyl) phosphate is cleaved by alkali-metal fluorides, nitrates, and acetates at give the trimethylsilyl esters of the corresponding acids.

Safety

• Symbol(GHS): GHS02,GHS07
• Signal word: Danger
• Hazard statements: H225-H315-H319-H335
• Precautionary statements: P210-P302+P352-P305+P351+P338
• Hazard Codes: F,Xi
• Risk Statements: 11-36/37/38
• Safety Statements: 16-26-36
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 2
• RTECS: TC9700000
• F: 10-21
• TSCA: Yes
• HS Code: 2931.90.9010
• HazardClass: 3.2
• PackingGroup: III