Phenyltris(trimethylsiloxy)silane

苯基三(三甲基硅氧基)硅烷

Also known as: Tris(trimethylsiloxy)phenylsilane, 1,1,1,5,5,5-Hexamethyl-3-phenyl-3-(trimethylsilyloxy)trisiloxane, Dow Corning 556, Silicone DC 556, Phenyl trimethicone, Polyphenylmethyl siloxane, methylphenylpolysiloxane, UNII-DR0K5NOJ4R

Phenyltris(trimethylsiloxy)silane (CAS 2116-84-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C15H32O3Si4 and a molecular weight of 372.755 g/mol. It is also known as Tris(trimethylsiloxy)phenylsilane, 1,1,1,5,5,5-Hexamethyl-3-phenyl-3-(trimethylsilyloxy)trisiloxane and Dow Corning 556. Key properties include a melting point of -102ºC, a boiling point of 315.4±25.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 128.6±23.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

2116-84-9

Jingsj CID

J-6729-4

Molecular Formula

C₁₅H₃₂O₃Si₄

Chinese Name

苯基三(三甲基硅氧基)硅烷

Molecular Weight

372.755 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026