Tris(trimethylsilyl) Phosphite - ≥95% , CAS No.1795-31-9

CAS: 1795-31-9 Cat. No.: T161994 Molecular Weight: 298.54 Beilstein Registry Number: 2043810 EC Number: 679-684-3 PubChem CID: 137213
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Synonyms
Trimethylsilanol phosphite | TRIS(TRIMETHYLSILYL)PHOSPHITE | Silanol, trimethyl-, phosphite (3:1) | Silanol, 1,1,1-trimethyl-, 1,1',1''-phosphite | Phosphorous Acid Tris(trimethylsilyl) Ester | Tris(trimethylsilyl) phosphite | tritrimethylsilyl phosphite
Storage
Argon charged,Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1ml
T161994-1ml
2
$16.90
5ml
T161994-5ml
3
$54.90
25ml
T161994-25ml
5
$179.90
100ml
T161994-100ml
2
$484.90
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Argon charged,Room temperature Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

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.

Specifications

Synonyms
Trimethylsilanol phosphite | TRIS(TRIMETHYLSILYL)PHOSPHITE | Silanol, trimethyl-, phosphite (3:1) | Silanol, 1, 1, 1-trimethyl-, 1, 1', 1''-phosphite | Phosphorous Acid Tris(trimethylsilyl) Ester | Tris(trimethylsilyl) phosphite | tritrimethylsilyl phosphite
Specifications & Purity
≥95%
Storage
Argon charged, Room temperature
Shipped In
Normal
Purity
≥95%
Names and Identifiers
Pubchem Sid504757113
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504757113
Canonical SmilesC[Si](C)(C)OP(O[Si](C)(C)C)O[Si](C)(C)C
IUPAC Nametris(trimethylsilyl) phosphite
InChIKeyVMZOBROUFBEGAR-UHFFFAOYSA-N
INCHI1S/C9H27O3PSi3/c1-14(2,3)10-13(11-15(4,5)6)12-16(7,8)9/h1-9H3
Isomeric SMILES C[Si](C)(C)OP(O[Si](C)(C)C)O[Si](C)(C)C
WGK Germany 3
PubChem CID 137213
Molecular Weight 298.54
Beilstein 2043810
Reaxy-Rn 2043814

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganic oxygen compounds
ClassOrganic oxoanionic compounds
SubclassOrganic phosphites
Intermediate Tree Nodes Not available
Direct ParentOrganic phosphites
Alternative Parents Trialkylheterosilanes  Organic metalloid salts  Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Trialkylheterosilane - Organic phosphite - Organoheterosilane - Organic metalloid salt - Hydrocarbon derivative - Organic salt - Organosilicon compound - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as organic phosphites. These are organic compounds containing the phosphite oxoanion, with the formula [PO3]3-.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

16 results found

Lot NumberCertificate TypeDateItem
A2621097Certificate of AnalysisApr 03, 2025 T161994
C2525788Certificate of AnalysisApr 03, 2025 T161994
C2525790Certificate of AnalysisApr 03, 2025 T161994
C2525791Certificate of AnalysisApr 03, 2025 T161994
C2525793Certificate of AnalysisApr 03, 2025 T161994
C2627182Certificate of AnalysisApr 03, 2025 T161994
E2317246Certificate of AnalysisMay 27, 2023 T161994
E2416034Certificate of AnalysisMay 27, 2023 T161994
E2317253Certificate of AnalysisMay 25, 2023 T161994
E2317248Certificate of AnalysisMay 25, 2023 T161994
B2506026Certificate of AnalysisDec 07, 2022 T161994
F2326230Certificate of AnalysisDec 07, 2022 T161994
F2426230Certificate of AnalysisDec 07, 2022 T161994
K2222821Certificate of AnalysisDec 07, 2022 T161994
K2222833Certificate of AnalysisDec 07, 2022 T161994
K2222914Certificate of AnalysisDec 07, 2022 T161994

Show more ⌵

Chemical and Physical Properties
SensitivityAir Sensitive,Moisture Sensitive
Refractive Index1.41
Flash Point(°F)235.4 °F
Flash Point(°C)113 °C
Boil Point(°C)78-81 °C/8 mmHg(lit.)
Molecular Weight298.540 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count6
Exact Mass298.101 Da
Monoisotopic Mass298.101 Da
Topological Polar Surface Area27.700 Ų
Heavy Atom Count16
Formal Charge0
Complexity179.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.