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Merck

93412

Tris(trimethylsilyl) phosphite

≥95.0% (GC)

Synonym(s):

Trimethylsilanol phosphite, Tris(trimethylsilyloxy)phosphine

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About This Item

Linear Formula:
[(CH3)3SiO]3P
CAS Number:
1795-31-9
Molecular Weight:
298.54
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
57653555
MDL number:
MFCD00015588
Beilstein/REAXYS Number:
2043814
Assay:
≥95.0% (GC)
Form:
liquid

Key Documents

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InChI

1S/C9H27O3PSi3/c1-14(2,3)10-13(11-15(4,5)6)12-16(7,8)9/h1-9H3

SMILES string

C[Si](C)(C)OP(O[Si](C)(C)C)O[Si](C)(C)C

InChI key

VMZOBROUFBEGAR-UHFFFAOYSA-N

assay

≥95.0% (GC)

form

liquid

refractive index

n20/D 1.409 (lit.)

bp

78-81 °C/8 mmHg (lit.)

density

0.893 g/mL at 25 °C (lit.)

Quality Level

100

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General description

Tris(trimethylsilyl)phosphate is tris(trimethylsilyl)ester of phosphoric acid. It is an important raw material and intermediate inorganic synthesis. It is used in the preparation of bis(trimethylsilyl)phosphonate esters by the Arbuzov reaction with halogen-containing compounds.

Application

Tris(trimethylsilyl) phosphite is used as a:
  • Film-forming additive to enhance the electrochemical performance of the NMC811[LiNi0.8Mn0.1Co0.1O2]/Si-Grcell.

Other Notes

Reagent used for the mild preparation of bis(TMS) phosphonates (Arbuzow reaction); Review

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H315,H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class

10 - Combustible liquids

wgk

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
BCCK6472
BCCJ2909
BCCJ0464
BCCJ0456
BCCD7314

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M. Sekine et al.
Journal of the Chemical Society. Chemical Communications, 285-285 (1978)
Tris (trimethylsilyl) Phosphite
Bittman R
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
Understanding the Roles of Tris (trimethylsilyl) Phosphite (TMSPi) in LiNi0. 8Mn0. 1Co0. 1O2 (NMC811)/Silicon--Graphite (Si--Gr) Lithium-Ion Batteries
Liu H, et al.
Advanced Materials Interfaces, 7(15), 2000277-2000277 (2020)
L.E. Dreef et al.
Tetrahedron Letters, 29, 1199-1199 (1988)
M. Sekine et al.
The Journal of Organic Chemistry, 46, 2097-2097 (1981)
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