오르트호텔루르산
|
|
오르트호텔루르산 속성
- 녹는점
- 136°C
- 끓는 점
- 0℃
- 밀도
- 3.068; d 3.163
- 용해도
- H2O: 0.1 g/mL, 투명, 무색
- 산도 계수 (pKa)
- 7.7(at 25℃)
- 물리적 상태
- 백색 단사정계 결정
- 색상
- 흰색에서 거의 흰색
- 수용성
- g H2TeO6/100g H2O: 16.2(0°C), 41.6(20°C), 155(100°C) [LAN05]; 중합하는 경향이 있습니다. 가용성 희석 HNO3 [MER06]
- 최대 파장(λmax)
- 275nm(H2O)(lit.)
- Merck
- 14,9120
- Solubility Product Constant (Ksp)
- pKsp: 53.52
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xn | ||
---|---|---|---|
위험 카페고리 넘버 | 20 | ||
안전지침서 | 22-36/37/39-38 | ||
유엔번호(UN No.) | UN 3284 6.1/PG 3 | ||
WGK 독일 | 3 | ||
RTECS 번호 | WY2350000 | ||
F 고인화성물질 | 8 | ||
HS 번호 | 2811.19.6190 | ||
위험 등급 | 6.1(a) | ||
포장분류 | II | ||
기존화학 물질 | KE-27431 |
그림문자(GHS): |
![]() |
||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
신호 어: | Warning | ||||||||||||||
유해·위험 문구: |
|
||||||||||||||
예방조치문구: |
|
오르트호텔루르산 C화학적 특성, 용도, 생산
개요
Telluric acid, H6TeO6, is obtained in the form of its salts when tellurium is fused with potassium nitrate plus carbonate, or by the oxidizing action of chlorine on a tellurite in alkaline solution. The free acid may be obtained by decomposing the barium salt with sulfuric acid and concentrating the solution.where tellurium is in an octahedral coordination. Telluric acid, Te(OH)6, has the CAS number of 7803-68- 1 and a molecular weight of 229.6425 g/mol. It is a white, monoclinic crystal with a density of 3.07 g/cm3. Its melting point is 136°C and its solubility in water is 50.1 g/100 ml.
It is also formed when tellurium dioxide is oxidized by hydrogen peroxide in caustic solution (A. Gutbier, Zest. Anorg. Chem., 1904, 40, p. 260), and perhaps best of all by oxidizing tellurium with a mixture of nitric and chromic acids. It crystallizes as prisms, which lose their water of hydration at 160°C. The tellurates of the alkaline earth metals are more or less soluble in water, those of the other metals being very sparingly or almost insoluble in water. Some tellurates exist in two forms, a colorless form soluble in water and acids, and a yellow form insoluble in water and acids.
화학적 성질
White, heavy crystals. Soluble in hot water and alkalies; slightly soluble in cold water.물리적 성질
White crystals; dimorphic solid; exists in both cubic and monoclinic crystalline forms; density 3.07g/cm3; melts at 136°C; tends to polymerize (similar to stannic acid); forms polymetatelluric acid (H2TeO4)n on strong heating; soluble in water, about 33g/100 mL at 30°C; the solubility decreases as the molecule polymerizes and becomes colloidal; a very weak dibasic acid, pKa1 7.68 and pKa2 11.0 at 18°C; soluble in dilute nitric acid and alkalies.용도
Chemical reagent.제조 방법
Telluric acid can be prepared by reducing barium tellurate with sulfuric acid: BaTeO4 + H2SO4 + 2H2O → H6TeO6 + BaSO4 Also, telluric acid can be prepared by oxidation of tellurium or tellurium dioxide with a strong oxidizing agent such as hydrogen peroxide, sodium peroxide, chromic acid, or potassium permanganate in nitric acid. Molecular equations for overall reactions are shown below: Te + 3H2O2 → H6TeO6 TeO2 + H2O2 + 2H2O → H6TeO6 Te + 2CrO3 + 3H2O → H6TeO6 + Cr2O3At cold temperatures at about 1°C, telluric acid crystallizes as tetrahydrate.
일반 설명
Telluric acids exist in both cubic and monoclinic crystalline forms.1 It may be prepared by treating tellurium and tellurous acid with strong oxidants.위험도
As for tellurium.Safety Profile
Poison by ingestion and intravenous routes. When heated to decomposition it emits toxic fumes of Te. See also TELLURIUM COMPOUNDS.Purification Methods
Crystallise it once from nitric acid, then repeatedly from hot water (0.4mL/g). [Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I pp 451-453 1963.]오르트호텔루르산 준비 용품 및 원자재
원자재
준비 용품
오르트호텔루르산 공급 업체
글로벌( 154)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28180 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22968 | 58 |
Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 |
sales@chemdad.com | China | 39916 | 58 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
factory@coreychem.com | China | 29825 | 58 |
Antai Fine Chemical Technology Co.,Limited | 18503026267 |
info@antaichem.com | CHINA | 9641 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12449 | 58 |
Hefei TNJ Chemical Industry Co.,Ltd. | 0551-65418671 |
sales@tnjchem.com | China | 34571 | 58 |
Shaanxi Dideu Medichem Co. Ltd | +86-029-89586680 +86-18192503167 |
1026@dideu.com | China | 8853 | 58 |
Henan Alfa Chemical Co., Ltd | +8618339805032 |
alfa4@alfachem.cn | China | 13185 | 58 |
Alfa Chemistry | |
Info@alfa-chemistry.com | United States | 24072 | 58 |
오르트호텔루르산 관련 검색:
나트륨 텔루르산염, 무수물 카드뮴 텔루라이트 나트륨 텔루리트 텔루르 아텔루륨산 칼륨(아텔루르산 칼륨) 텔루산 카드뮴
TELLURIC ACID
POTASSIUM TELLURITE
Telluric acid dihydrate, 99+%,TELLURIC ACID,Telluric acid (99.5%-Te)
SODIUM TELLURATE
TELLURIUM (IV) ETHOXIDE
AMMONIUM TELLURATE
Telluric acid (H2TeO3), copper(2++) salt (1:1)
Telluric acid strontium salt
Telluric acid dirubidium salt
Telluric acid hydrogen=sodium salt
Telluric acid dilithium salt
Telluric acid tricopper(II) salt