White powder, insoluble in water, soluble in hot and concentrated strong acid and alkali, having the good chemical stability; Application: 1) In paint industry, It is used as white pigment and glaze of porcelain. 2) It can also be used as coating and filling in paper-making industry to help paper to be printable and opaque. 3) In metallurgical industry, it can be used to make spongy titanium, ...