二氧化钛
中文名：二氧化钛
外文名：Titanium Dioxide
中文别名：钛白粉，钛糖
CAS NO：13463-67-7
EINECS：236-675-5
分子量：79.87
分子式:TiO2
主要晶型:金红石型、锐钛型
摩尔质量:79.8658 g·mol-1
折射率：2.76~2.55
莫氏硬度：6-7、5.5-6
电容率：114~31
线膨胀系数：25/℃
热导率：1.809~10.3
吸油度：16～48、18～30
溶解性：溶于热浓硫酸、盐酸、硝酸。
食品应用：
美国食品药品管理局规定二氧化钛可以作为所有的食品白色素，最大的使用量为1g/kg Sec. 73.575二氧化钛。色素添加剂二氧化钛可以安全用于一般着色食品中，服从下列规定：
（1） 二氧化钛的数量不超过食物重量的1%。
（2） 按照法令的401条所公布的特殊标准，不得使用的着色食品，除非有类似的标准允许添加色素。
（3）对于着色食品，食用的色素添加剂二氧化钛可以含有适当的稀释剂，作为安全的色素添加剂，如下：二氧化硅，作为分散助剂，含量不超过2%。
产品适应：凉果类、果冻、油炸食品、可可制品、巧克力、巧克力制品、硬制糖果、抛光糖果、胶基糖果、膨化食品、糖果巧克力制品包衣、蛋黄酱、沙拉酱、果酱、固体饮料、魔芋凝胶食品等。
Titanium Dioxide
product Name: Titanium(IV) oxide
Synonyms: C.I. 77891; C.I. Pigment White 6; Titanium dioxide; Titanium Dioxide Anatase; Titanium Oxide; Titania; Titanium (IV) dioxide; Rutile; dioxotitanium; Titanium(IV)oxide; Titanium(Ⅳ)oxide; Tilac D; TiLox-Black; Pigment Black 35; Titanium Dioxide food grade; Titanium dioxide,rutile; Titanium dioxide,anatase; pigment white; titanium white; rutile titanium dioxide; anatase titanium dioxide; Anatase,oxid titanium
Molecular Formula: TiO2
Molecular Weight: 79.8658
CAS: 13463-67-7;1317-80-2;1317-70-0;51745-87-0;52624-13-2
EINECS: 236-675-5;257-372-4;215-280-1;257-372-4
Uses: In cosmetic and skin care products, Titanium dioxide is used as a pigment, sunscreen and a thickener. It is also used as a tattoo pigment and in styptic pencils. Because of its brightness and very high refractive index (n = 2.7), Titanium dioxide is the most widely used white pigment. In ceramic glazes titanium dioxide acts as an opacifier and seeds crystal formation. Synthetic single crystals and films of Titanium dioxide are used as a semiconductor, and also in Bragg-stack style dielectric mirrors due to the high refractive index of TiO2 (2.5 – 2.9).
Titanium dioxide is often used to whiten skimmed milk which has been shown statistically to increase skimmed milk's palatability. Titanium dioxide is used to mark the white lines on the tennis courts of the All England Lawn Tennis and Croquet Club, best known as the venue for the annual grand slam tennis tournament The Championships, Wimbledon.
Titanium dioxide can be used to cleave protein that contains the amino acid proline at the site where proline is present. Titanium dioxide is also used as a material in the memristor, a new electronic circuit element. It can be employed for solar energy conversion based on dye, polymer, or quantum dot sensitized nanocrystalline TiO2 solar cells using conjugated polymers as solid electrolytes.
When you are using Titanium dioxide, you should be very cautious about it. This chemical may cause damage to health. It is harmful by inhalation, in contact with skin and if swallowed. In addition, it is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing.
