Octadecyltrichlorosilane (ODTS, or n-octadecyltrichlorosilane) is an organometallic chemical. It is used in semiconductor industry to form self-assembled monolayer thin films on silicon dioxide substrates. Its structural chemical formula is CH3(CH2)17SiCl3. It is flammable, reacts with water, and is also sensitive to air. It is corrosive and can severely damage mucous membranes. Its EINECS number is 203-930-7.

CAS：112-04-9
中文别名：正十八烷基三氯硅烷;三氯十八烷基硅烷;三氯(十八烷基)硅烷;
英文别名：N-OCTADECYLTRICHLOROSILANE;Trichlorostearylsilane;Trichlorooctadecylsilane;Stearyltrichlorosilane;Silane, trichlorooctadecyl-;Trichloro(octadecyl)silane;trichloro(octadecyl)silane;
分子式：C18H37Cl3Si
分子量：387.931
精确质量：386.173
Psa：0.0
Logp：8.9032

EINECS号：203-930-7
RTECS号：VV4680000
PubChem号：24846677
MDL号：MFCD00000484
BRN号：1778847

外观与性状：无色液体，有刺激气味。
密度：0.984g/mLat 25°C(lit.)
沸点：223°C10mm Hg(lit.)
熔点：22°C
闪点：193°F
折射率：n20/D 1.459(lit.)
稳定性：Stable. Reacts violently with water. Incompatible with strong acids, strong bases, strong oxidizing agents. Air-sensitive. Combustible.
蒸汽密度：>1 (vs air)
蒸汽压：<5 mm Hg ( 20 °C)

RTECS号：VV4680000
安全说明：S26; S36/37/39; S43
WGK Germany：1
危险类别码：R14; R34; R29
海关编码：2931900090
危险品运输编码：UN 1800 8/PG 2
危险类别：8
包装等级：II
危险品标志：C

用途
制造硅酮的中间体。