Tantalum(V) ethoxide is an metalorganic compound with formula Ta2(OC2H5)10, often abbreviated as Ta2(OEt)10. It is a colorless solid that dissolves in some organic solvents but hydrolyzes readily. In solution, it aggregates to form bioctahedral dimers with composition [(EtO)4Ta(μ-OEt)]2. Several approaches for preparing tantalum(V) ethoxide are known but salt metathesis from tantalum(V) chloride is generally the most successful synthetic approach. It is mainly used for the manufacture of tantalum(V) oxide thin-film materials by approaches including chemical vapor deposition, atomic layer deposition, and sol-gel processing. These materials have semiconductor, electrochromic, and optical applications.

CAS：6074-84-6
中文别名：
英文别名：ethanolate,tantalum(5+);Ethanol, tantalum(5+) salt;
分子式：C10H25O5Ta
分子量：406.25
精确质量：406.118
Psa：46.15
Logp：2.436

MDL号：MFCD00049785

密度：1.566
沸点：155ºC
熔点：21ºC(lit.)
闪点：87 °F
折射率：1.487
储存条件：2-8ºC

安全说明：S16-S26-S36/37/39-S45
危险类别码：R10; R34
WGK Germany：3
危险品运输编码：UN 2920
危险类别：3
包装等级：III
危险品标志：C; F
危险标志：GHS02, GHS05
危险性防范说明：P280; P305 + P351 + P338; P310
信号词：Danger
危险性描述：H226; H314

生产方法
制备用仪器和试剂事先都需经干燥和除水处理,并避免潮气的进入。 10g五氯化钽悬浮在200mL无水苯中,慢慢加入25mL无水乙醇,发生猛烈的反应并产生氯化氢气体。待猛烈的反应平息后,通入过量的氨气,待析出氯化铵沉淀后,滤出。滤液在减压下蒸发,将剩余物进行真空蒸馏,收集145～147℃/13.34Pa产品约11g。