Tellurous acid
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Tellurous acid 속성
- 산도 계수 (pKa)
- 2.5(at 25℃)
안전
Tellurous acid C화학적 특성, 용도, 생산
개요
H2TeO3 has been synthesized as a solid but it is not well characterized. If tellurium dioxide, TeO2, is added to water, tellurous acid does not easily form, but it can be made other ways. Its CAS number is 10049-23-7.Tellurous acid can be formed from the chlorides. Two chlorides are known, the dichloride, TeCl2, and the tetrachloride, TeCl4. They are both obtained by passing chlorine over tellurium, the product being separated by distillation (the tetrachloride is the less volatile). The dichloride is an amorphous, readily fusible, almost black solid. It is decomposed by water with formation of tellurium and tellurous acid:
2TeCl2+ 3H2O ? Te+H2TeO3+ 4HCl
However, pure tellurous acid, H2TeO3, can be obtained when the tetrachloride is decomposed by water, or on dissolving tellurium in nitric acid and pouring the solution into water. It is a colorless solid and behaves as a dibasic acid. The alkali tellurites are soluble in water. They also gives rise to super acid salts, such as KHTeO3·H2TeO3.
화학적 성질
White, amorphous substance of varying composition; H2O content is frequently less than that corresponding to the formula HsTeO3; loses water when dry but can be stored under H2O for several days without change. On heating above room temperature, extensively loses water with conversion to TeO3. Very slightly soluble in water.위험도
As for tellurium.Tellurous acid 준비 용품 및 원자재
원자재
준비 용품
Tellurous acid 공급 업체
글로벌( 2)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Beijing Hengye Zhongyuan Chemical Co., Ltd | -- |
13552281129@163.com | China | 6168 | 64 |
Tianjin white Chemical Co. | -- |
bshg@tjbschem.com | China | 2009 | 61 |
Tellurous acid 관련 검색:
텔루르
Hydrogen telluride
STRONTIUM TELLURIDE
TELLURIC ACID
STRONTIUM TELLURITE
STRONTIUM TELLURATE
CALCIUM TELLURIDE, 99.99%
BARIUM TELLURIDE
CALCIUM TELLURITE
CALCIUM TELLURATE, CATEO4
Beryllium tellurate
MAGNESIUM TELLURIDE
Magnesium Tellurate
Beryllium Tellurite
Telluric acid (H2teo4), barium salt (1:1)
Magnesium Tellurite
Radium Tellurite
Barium Tellurite