Titanium(II) oxide (TiO) is an inorganic chemical compound of titanium and oxygen. It can be prepared from titanium dioxide and titanium metal at 1500 °C. It is non-stoichiometric in a range TiO0.7 to TiO1.3 and this is caused by vacancies of either Ti or O in the defect rock salt structure. In pure TiO 15% of both Ti and O sites are vacant. Careful annealing can cause ordering of the vacancies producing a monoclinic form which has 5 TiO units in the primitive cell that exhibits lower resistivity. A high temperature form with titanium atoms with trigonal prismatic coordination is also known. Acid solutions of TiO are stable for a short time then decompose to give hydrogen:

CAS：12137-20-1
中文别名：氧化钛;氧化钛(II);
英文别名：oxotitanium;Titanium Monoxide;
分子式：OTi
分子量：63.8664
精确质量：63.9429
Psa：17.07
Logp：-0.1188

EINECS号：235-236-5
MDL号：MFCD00036279
PubChem号：24889228

密度：4.95 g/cm3
沸点：>3000ºC
熔点：1700ºC
闪点：>3000ºC

生产方法
按反应计量将金属钛和二氧化钛混合,在经过真空抽气的氧化铝容器中加热到1600℃进行反应。另外也可以在1.32×107Pa的氢气流中,温度为2000℃时,将二氧化钛还原为一氧化钛。 可用作乙烯聚合反应的催化剂。还可用于制作遮光性胶卷、黑色化妆品等。
用途
可用作乙烯聚合反应的催化剂。还可用于制作遮光性胶卷、黑色化妆品等。