二氧化鈦

外文名：Titanium Dioxide

中文別名：鈦白粉，鈦糖

CAS NO：13463-67-7

EINECS：236-675-5

分子量：79.87

分子式:TiO2

主要晶型:金紅石型、銳鈦型

摩爾質(zhì)量:79.8658 g·mol-1

折射率：2.76~2.55

莫氏硬度：6-7、5.5-6

電容率：114~31

線膨脹系數(shù)：25/℃

熱導(dǎo)率：1.809~10.3

吸油度：16～48、18～30

溶解性：溶于熱濃硫酸、鹽酸、硝酸。

食品應(yīng)用：

美國食品藥品管理局規(guī)定二氧化鈦可以作為所有的食品白色素，最大的使用量為1g/kg Sec. 73.575二氧化鈦。色素添加劑二氧化鈦可以安全用于一般著色食品中，服從下列規(guī)定：

（1） 二氧化鈦的數(shù)量不超過食物重量的1%。

（2） 按照法令的401條所公布的特殊標(biāo)準(zhǔn)，不得使用的著色食品，除非有類似的標(biāo)準(zhǔn)允許添加色素。

（3）對于著色食品，食用的色素添加劑二氧化鈦可以含有適當(dāng)?shù)南♂寗?，作為安全的色素添加劑，如下：二氧化硅，作為分散助劑，含量不超過2%。

產(chǎn)品適應(yīng)：涼果類、果凍、油炸食品、可可制品、巧克力、巧克力制品、硬制糖果、拋光糖果、膠基糖果、膨化食品、糖果巧克力制品包衣、蛋黃醬、沙拉醬、果醬、固體飲料、魔芋凝膠食品等。

包裝：25kg/編織袋

銷售價(jià)格：21元/kg

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.