Description

Tris(trimethylsilyl) phosphate (CAS: 10497-05-9) is a high-purity organosilicon compound with the molecular formula C₉H₂₇O₄PSi₃. This specialty chemical is widely utilized in advanced synthetic chemistry and energy storage applications due to its unique reactivity and stability. As a silyl phosphate derivative, it serves as a versatile reagent for protecting groups, catalysis, and surface modification. The compound is characterized by its moisture sensitivity and should be handled under inert atmosphere conditions. Available in rigorously controlled batches to ensure consistency for research and industrial applications, our Tris(trimethylsilyl) phosphate meets the highest purity standards for demanding technical uses.

• CAS: 10497-05-9
• Molecular Weight: 298.54 g/mol
• Appearance: Colorless to pale yellow liquid
• Purity: ≥97% (GC)
• Storage: Store under nitrogen at 2-8°C

Properties

• CAS Number: 10497-05-9
• Complexity: 253
• IUPAC Name: tris(trimethylsilyl) phosphate
• InChI: InChI=1S/C9H27O4PSi3/c1-15(2,3)11-14(10,12-16(4,5)6)13-17(7,8)9/h1-9H3
• InChI Key: QJMMCGKXBZVAEI-UHFFFAOYSA-N
• Exact Mass: 314.09547594
• Molecular Formula: C9H27O4PSi3
• Molecular Weight: 314.54
• SMILES: C[Si](C)(C)OP(=O)(O[Si](C)(C)C)O[Si](C)(C)C
• Topological: 44.8
• Monoisotopic Mass: 314.09547594
• Synonyms: Tris(trimethylsilyl) phosphate, 10497-05-9, Tris(trimethylsilyl)phosphate, EINECS 234-028-1, BRN 1794624, Phosphoric acid tris(trimethylsilyl ester), Phosphoric Acid Tris(trimethylsilyl) Ester, Phosphoric acid, triTMS, Phosphoric acid, tris-TMS, CHEBI:144345, DTXSID60909282, 4-04-00-04017 (Beilstein Handbook Reference), DTXCID601338347, tris(trimethylsiloxy)phosphine oxide, tris(trimethylsilyl) ester of phosphoric acid, 234-028-1, qjmmcgkxbzvaei-uhfffaoysa-n, Silanol, trimethyl-, phosphate (3:1), Tris-(trimethylsilyl)fosfat, MFCD00008267, PHOSPHORIC ACID, TRIS(TRIMETHYLSILYL) ESTER, Tris-(trimethylsilyl)fosfat [Czech], C9H27O4PSi3, tritrimethylsilyl phosphate, SCHEMBL394297, AKOS015856733, FT61197, s21325, Tris(trimethylsilyl) phosphate, >=98%, BP-21437, SY057776, DB-040583, phosphoric acid tris-(trimethylsilyl) ester, CS-0187713, NS00054421, P1248, D92093, Silanol, 1,1,1-trimethyl-, 1,1′,1”-phosphate, Phosphoric acid tris(trimethylsilyl) ester;Tris(trimethylsiloxy)phosphine oxide

Application

Tris(trimethylsilyl) phosphate finds primary application as a cocatalyst in the epoxidation of allyl-TMS ethers when used with silylperoxides, enabling efficient oxygen transfer reactions. In energy storage systems, it functions as a film-forming additive for lithium-ion battery cathodes, enhancing electrode stability and cycle life. The compound’s ability to modify surfaces and act as a phosphate source makes it valuable in materials science applications.

Safety and Hazards

GHS Hazard Statements

• H225 (41.5%): Highly Flammable liquid and vapor [Danger Flammable liquids]
• H226 (21.7%): Flammable liquid and vapor [Warning Flammable liquids]
• H314 (39.6%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H315 (60.4%): Causes skin irritation [Warning Skin corrosion/irritation]
• H318 (60.4%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
• H319 (39.6%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (37.7%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• H412 (35.8%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P260, P261, P264, P264+P265, P271, P273, P280, P301+P330+P331, P302+P352, P302+P361+P354, P303+P361+P353, P304+P340, P305+P351+P338, P305+P354+P338, P316, P317, P319, P321, P332+P317, P337+P317, P362+P364, P363, P370+P378, P403+P233, P403+P235, P405, and P501

Hazard Classes and Categories

• Flam. Liq. 2 (41.5%)
• Flam. Liq. 3 (21.7%)
• Skin Corr. 1B (39.6%)
• Skin Irrit. 2 (60.4%)
• Eye Dam. 1 (60.4%)
• Eye Irrit. 2 (39.6%)
• STOT SE 3 (37.7%)
• Aquatic Chronic 3 (35.8%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.