칼슘텔루레이트,CATEO4

칼슘텔루레이트,CATEO4
칼슘텔루레이트,CATEO4 구조식 이미지
카스 번호:
15852-09-2
한글명:
칼슘텔루레이트,CATEO4
동의어(한글):
칼슘텔루레이트,CATEO4
상품명:
CALCIUM TELLURATE, CATEO4
동의어(영문):
Einecs 239-971-2;CALCIUM TELLURATE;CALCIUM TELLURATE, CATEO4;Telluric acid calcium salt;calcium tellurium tetraoxide;Metatelluric acid calcium salt;Telluric acid (H2teo4), calcium salt (1:1)
CBNumber:
CB8506593
분자식:
CaO4Te
포뮬러 무게:
231.6756
MOL 파일:
15852-09-2.mol

칼슘텔루레이트,CATEO4 속성

안전

기존화학 물질 KE-04622

칼슘텔루레이트,CATEO4 C화학적 특성, 용도, 생산

개요

Calcium tellurate has the molecular formula of CaTeO4 and the molecular weight of 231.68 grams per mole. Its CAS number is 712354-41-1 and its solubility in water is 0.727 g/100 ml at 20°C. It can be prepared by the solid-state reaction of TeO3 and CaO:
CaO + TeO3 + heat ? CaTeO4
TeO3 melts at 430 °C and a temperature of 600° C serves to drive the reaction to completion. This is the tetragonal meta-tellurate composition. It can also be formed in the same manner by solid-state reaction of telluric acid:
CaO(solid)+H2TeO4(solid) ? CaTeO4(solid)+H2O(gas)
This is also tetragonal in structure, with the meta-tellurate configuration. Of the two possible configurations, the meta-tellurate is said to be the most stable. Telluric acid is soluble in water and produces Te(OH)4O2 anions in solutions.

용도

Calcium tellurate has been used to isolate telluric acid by heating TeO2 with and excess of CaO at 975°C in air at a ration of 1:5 equivalents. The dioxide was completely oxidizedandtheproductwasCaTeO4.Ratiosless thanthis affected the overall yield. By adding nitric acid, soluble calcium nitrate and insoluble telluric acid were formed:
5CaO(solid) + TeO2(solid) + heat?CaTeO4(solid)
CaTeO4(solid) +HNO3(aq)?Ca(NO3)2(aq) +H2TeO4(solid)
If calcium tellurite(IV) is heated, in N2 atmosphere, with stoichiometric amounts of CaO, the reaction product, proceeding at 380–620°C, contained orthotellurate and telluride anions formed in disproportionation:
3CaTeO3 + CaO + heat?CaTeO4 + 2CaTe
The scientific literature concerning calcium tellurate is exceedingly limited and no data on its physical properties have been published. It has found little usage in industry but is available commercially in small quantities for use in research.

칼슘텔루레이트,CATEO4 준비 용품 및 원자재

원자재

준비 용품


칼슘텔루레이트,CATEO4 공급 업체

글로벌( 2)공급 업체
공급자 전화 이메일 국가 제품 수 이점
Service Chemical Inc. --
sales@chemos-group.com Germany 6350 71
MP Biomedicals, Inc. --
United States 6561 81

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