이산화게르마늄
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이산화게르마늄 속성
- 녹는점
- >400 °C(lit.)
- 밀도
- 6.239 g/mL at 25 °C
- 증기압
- 0Pa at 25℃
- 굴절률
- 1.99
- 저장 조건
- no restrictions.
- 용해도
- 에틸렌 글리콜: 가용성
- 물리적 상태
- 분말/조각/결정체/구슬/덩어리 등
- Specific Gravity
- 6.239
- 색상
- 하얀색
- 수용성
- 0.4g/100mL
- Crystal Structure
- Quartz type
- crystal system
- Three sides
- Merck
- 14,4409
- Solubility Product Constant (Ksp)
- pKsp: 57
- Space group
- P3221
- Lattice constant
a/nm b/nm c/nm α/o β/o γ/o V/nm3 0.4987 0.4987 0.5652 90 90 120 0.1217
- InChIKey
- YBMRDBCBODYGJE-UHFFFAOYSA-N
- LogP
- 4.14 at 20℃
- CAS 데이터베이스
- 1310-53-8(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xn | ||
---|---|---|---|
위험 카페고리 넘버 | 22 | ||
안전지침서 | 22-24/25 | ||
WGK 독일 | 1 | ||
RTECS 번호 | LY5240000 | ||
TSCA | Yes | ||
HS 번호 | 2825 60 00 | ||
유해 물질 데이터 | 1310-53-8(Hazardous Substances Data) | ||
독성 | LD50 i.p. in rats: 750 mg/kg, Rosenfeld, Wallace, Arch. Ind. Hyg. Occup. Med. 8, 466 (1953) | ||
기존화학 물질 | KE-17600 |
이산화게르마늄 C화학적 특성, 용도, 생산
개요
Germanium oxide also called Germanium dioxide is the oxide of germanium, an inorganic compound, featuring the chemical formula GeO2. It is formed as a passivation layer on pure germanium after exposure to oxygen. Germanium dioxide generally has a low toxicity, but shows severe nephrotoxicity at higher doses. Germanium dioxide is still offered on the market in some questionable miracle therapies. Exposure to high doses of germanium dioxide can lead to germanium poisoning.화학적 성질
White powder, hexagonal, tetragonal, and amorphous.용도
Germanium oxide can be used in Phosphors, transistors and diodes, infraredtransmitting glass.Safety Profile
Poison by intraperitoneal route. When heated to decomposition it emits acrid smoke and irritating fumes.Purification Methods
The oxide (GeO2) is usually prepared by hydrolysing redistilled GeCl4 and igniting it in order to remove H2O and chloride. It can be further purified by dissolving in hot H2O (solubility is 4g/L cold) evaporating and drying the residual crystalline solid. When the soluble form (which is produced in H2O at 355o) is heated for 100hours, it is converted to the insoluble form. This form is stable at temperatures up to 1033o, and fusion at 1080o for 4hours causes complete de-vitrification and it reverts to the soluble form. [Müller & Blank J Am Chem Soc 46 2358 1924, Dennis & Laubengayer J Am Chem Soc 47 1945 1925, Laubengayer & Morton J Am Chem Soc 54 2303 1932, Schenk in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 706 1963.]Structure and conformation
Germanium oxide ccurs in two crystalline and one amorphous modifications: (1) a tetragonal rutile form, refractive index 2.05, density 6.24 g/cm3 at 20°C. (2) white hexagonal quartz modification, refractive index 1.735, density 4.70 g/cm3 at 18°C, and (3) a glassy amorphous form, refractive index 1.607, density 3.64 g/cm3 at 20°C. The tetragonal form is practically insoluble in water, while the hexagonal and the amorphous modifications have low solubilities; 0.45 and 0.52% respectively, at 25°C. Aqueous solutions are acidic due to formation of metagermanic acid, H2GeO3. Hexagonal modification converts to a tetragonal crystal system when heated at 350°C in water under pressure. Both crystalline forms convert to a glass-like amorphous GeO2 when heated at 1,100°C.이산화게르마늄 준비 용품 및 원자재
원자재
준비 용품
이산화게르마늄 공급 업체
글로벌( 361)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
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Zhuoer Chemical Co., Ltd | 02120970332; +8613524231522 |
sales@zhuoerchem.com | China | 2905 | 58 |
Shaanxi Dideu Medichem Co. Ltd | +86-29-81148696 +86-15536356810 |
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Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 |
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Hebei Kingfiner Technology Development Co.Ltd | +86-15532196582 +86-15373005021 |
lisa@kingfinertech.com | China | 2990 | 58 |
Hebei Jingbo New Material Technology Co., Ltd | +8619931165850 |
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Hebei Saisier Technology Co., LTD | +86-18400010335 +86-18034520335 |
admin@hbsaisier.cn | China | 1009 | 58 |
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HebeiShuoshengImportandExportco.,Ltd | +86-18532138899 +86-18532138899 |
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Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 |
info@dakenam.com | China | 18628 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21667 | 55 |