Tris(trimethylsilyl)phosphate
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
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-01-27 09:38:02
![Tris(trimethylsilyl)phosphate Structural](https://img.chemicalbook.in/CAS/GIF/10497-05-9.gif)
What is Tris(trimethylsilyl)phosphate?
Chemical properties
Colorless liquid
The Uses of Tris(trimethylsilyl)phosphate
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.
Definition
ChEBI: Tris(trimethylsilyl) phosphate is an organosilicon compound that is phosphoric acid in which the three hydroxy groups are substituted by (trimethylsilyl)oxy groups. It is a phosphoric acid derivative and an organosilicon compound.
Preparation
Tris(trimethylsilyl)phosphine is prepared by treating trimethylsilyl chloride, white phosphorus, and sodium-potassium alloy:
1/4 P4 + 3 Me3SiCl + 3 K → P(SiMe3)3 + 3 KCl
General Description
Tris(trimethylsilyl) phosphate has been investigated as a novel film-forming additive for LiNi0.5Co0.2Mn0.3O2 cycling at high cut-off potential in LiPF6-based electrolyte. Tris(trimethylsilyl) phosphate [Tris(trimethylsilyl) ester of phosphoric acid] undergoes dealkylsilylation reaction with alumazene to yield heteroadamantane molecule.
Reactivity Profile
Tris(trimethylsilyl)phosphine and its more reactive derivative lithium bis-(trimethylsilyl)phosphide·2tetrahydrofuran are very useful reagents for the preparation of compounds with a single or a multiple element phosphorus bond. They react readily with various element halides, with carboxylic acid chlorides, and with carboxylic esters, as well as with other organic electrophiles via a substitution of lithium and/or a cleavage of the weak polar Si-P bonds.
Flammability and Explosibility
Not classified
Properties of Tris(trimethylsilyl)phosphate
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 | n |
Flash point: | 76 °F |
storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
form | liquid |
pka | 23-25(at 25℃) |
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 |
CAS DataBase Reference | 10497-05-9(CAS DataBase Reference) |
EPA Substance Registry System | Silanol, trimethyl-, phosphate (3:1) (10497-05-9) |
Safety information for Tris(trimethylsilyl)phosphate
Signal word | Danger |
Pictogram(s) |
![]() Flame Flammables GHS02 ![]() Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H225:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Tris(trimethylsilyl)phosphate
New Products
1-Amino-1-cyclohexanecarboxylic acid Cycloleucine 6-Bromo-3-iodo-1-methyl-1H-indazole 3-(2,4-Dimethoxybenzyl)dihydropyrimidine-2,4(1H,3H)-dione 7-Bromo-1H-indazole ELECTROLYTIC IRON POWDER 2-Methyl-2-phenylpropyl acetate 1-Aminocyclobutanecarboxylic acid 1-(2-Ethoxyethyl)-2-(piperidin-4-yl)-1H-benzo[d]imidazole hydrochloride Decanonitrile tert-butyl 4-(1H-benzo[d]iMidazol-2-yl)piperidine-1-carboxylate 4-Ethylbenzylamine Methyl 5-bromo-2-chloro-3-nitrobenzoate N-(5-Amino-2-methylphenyl)acetamide 2-Chloro-3-nitropyridine 5-Bromo-2,3-dimethoxypyridine methyl 6-chloro-2-(chloromethyl)nicotinate 2-methoxy-4-methyl-5-nitro pyridine 2-iodo-5-bromo pyridine 2-amino-4-methyl-5-nitro pyridine 5-Fluoro-2-Oxindole methyl L-alaninate hydrochloride diethyl L-glutamate hydrochloride Ethyl tosylcarbamateRelated products of tetrahydrofuran
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