Tricyclohexylphosphine is the tertiary phosphine with the formula P(C6H11)3. Commonly used as a ligand in organometallic chemistry, it is often abbreviated to PCy3, where Cy stands for cyclohexyl. It is characterized by both high basicity (pKa= 9.7) and a large ligand cone angle (170°).

CAS：2622-14-2
中文别名：三环已基磷;三环己基磷;三环己基;
英文别名：triscyclohexylphosphine;Tricyclohexylphosphine;Phosphine,tricyclohexyl;Tricyclohexyl-phosphane;Tricyclohexyl Phosphine;bistricyclohexylphosphine;Tricyclohexylphosphine solution;PCy3;tricyclohexylphosphan;TRICYCLOHEXYL PHOSPHINE;
分子式：C18H33P
分子量：280.428
精确质量：280.232
Psa：13.59
Logp：6.4664

MDL号：MFCD00003853
EINECS号：220-069-2

外观与性状：白色至黄色结晶粉末
密度：0.909g/mLat 25°C
沸点：110°C
熔点：81-83°C(lit.)
闪点：48°F
稳定性：Stable at room temperature in closed containers under normal storage and handling conditions.
储存条件：-20ºC
蒸汽压：9.7E-06mmHg at 25°C

安全说明：S26-S36/37-S62-S37/39-S36-S33-S29-S16
WGK Germany：3
危险类别码：R22; R36/37/38
危险品运输编码：UN 2056 3/PG 2
海关编码：2931900090
包装等级：III
危险品标志：Xn
危险标志：GHS02, GHS07, GHS08
信号词：Danger
危险性防范说明：P210; P261; P281; P301 + P310; P305 + P351 + P338; P331
危险性描述：H225; H304; H315; H319; H335 + H336; H361d; H373

用途
催化剂，作为配体，用于Buchwald。