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锗粉

锗粉用途

用于提纯锗及半导体工业
制造半导体器件用。 

锗粉名称

[ CAS 号 ]:
7440-56-4

[ 中文名 ]:

[ 英文名 ]:
Germanium

[中文别名 ]:

[英文别名 ]:

锗粉物理化学性质

[ 密度 ]:
5.35 g/mL at 25 °C(lit.)

[ 沸点 ]:
2830 °C(lit.)

[ 熔点 ]:
937 °C(lit.)

[ 分子式 ]:
Ge

[ 分子量 ]:
72.640

[ 精确质量 ]:
73.921181

[ LogP ]:
0.06920

[ 外观性状 ]:
淡灰色-白色有光泽的脆性固体,无臭

[ 储存条件 ]:
Flammables area

[ 稳定性 ]:
Stable. Slightly soluble in strong acids. Incompatible with strong oxidizing agents.

锗粉MSDS

锗粉毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :
LY5200000
CHEMICAL NAME :
Germanium, metal powder
CAS REGISTRY NUMBER :
7440-56-4
LAST UPDATED :
199701
DATA ITEMS CITED :
9
MOLECULAR FORMULA :
Ge
MOLECULAR WEIGHT :
72.59

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
58 mg/kg/26W-I
TOXIC EFFECTS :
Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis)
REFERENCE :
JJMDAT Japanese Journal of Medicine. (Nankodo Co., Ltd., POB 5272, Tokyo International 100-31, Japan) V.1-30, 1962-1991. For publisher information, see IEDIEP. Volume(issue)/page/year: 30,67,1991
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - child
DOSE/DURATION :
2 gm/kg/78W-I
TOXIC EFFECTS :
Gastrointestinal - nausea or vomiting Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Kidney, Ureter, Bladder - changes in both tubules and glomeruli
REFERENCE :
JJMDAT Japanese Journal of Medicine. (Nankodo Co., Ltd., POB 5272, Tokyo International 100-31, Japan) V.1-30, 1962-1991. For publisher information, see IEDIEP. Volume(issue)/page/year: 30,67,1991
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
786 mg/kg/2Y-I
TOXIC EFFECTS :
Gastrointestinal - nausea or vomiting Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Blood - oxidant related (GPD deficient) anemia
REFERENCE :
JJMDAT Japanese Journal of Medicine. (Nankodo Co., Ltd., POB 5272, Tokyo International 100-31, Japan) V.1-30, 1962-1991. For publisher information, see IEDIEP. Volume(issue)/page/year: 30,67,1991
TYPE OF TEST :
LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
3860 mg/m3/4H
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - other changes
REFERENCE :
FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 28,571,1990 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
250 mg/m3/6H/4W-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - changes in lung weight Kidney, Ureter, Bladder - urine volume increased Blood - other changes
REFERENCE :
FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 28,571,1990 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 2 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 34770 No. of Facilities: 56 (estimated) No. of Industries: 2 No. of Occupations: 3 No. of Employees: 307 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 34770 No. of Facilities: 16 (estimated) No. of Industries: 2 No. of Occupations: 7 No. of Employees: 1914 (estimated) No. of Female Employees: 279 (estimated)

锗粉安全信息

[ 符号 ]:

GHS07

[ 信号词 ]:
Warning

[ 危害声明 ]:
H315-H319-H335

[ 警示性声明 ]:
P261-P305 + P351 + P338

[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Gloves

[ 危害码 (欧洲) ]:
F:Flammable;Xi:Irritant

[ 风险声明 (欧洲) ]:
R11;R36/38

[ 安全声明 (欧洲) ]:
S26-S36/39-S2

[ 危险品运输编码 ]:
UN 3089 4.1/PG 2

[ WGK德国 ]:
3

[ RTECS号 ]:
LY5200000

[ 包装等级 ]:
III

[ 危险类别 ]:
8

锗粉合成路线

锗粉上下游产品

锗粉制备

1.工业生产有坩埚直拉法和悬浮区熔法。坩埚直拉法 拉晶前先将设备各部件、合金石英坩埚、高纯锗和籽晶进行清洁处理。将高纯锗经配料和掺杂,加入单晶炉的合金石英坩埚中,再经抽真空、熔化,在流通的氩气气氛下,人工引晶放肩和收尾。晶体的等径生长过程中,需根据情况适当调节功率,使其获得直径均匀的产品。经检测、称量,制得锗单晶成品。

可由二氧化锗用碳还原,再经冶炼制得。

2.将二氧化锗粉末装满石英盘,放于石英制反应管中。将反应管放入长度为石英盘的2~2.5倍的管式电炉的中心部位进行加热,送入精制氢气,升温至600℃±5℃。对100g的GeO2以2~2.5mL/min的速度通入氢气,经3~4h即可还原完毕。再升温至1000℃±10℃,经约30min,使细粉状的Ge熔融,然后将电炉以6mm/min的速度向氢出口方向移动。在石英盘内,锗从一端开始凝固,由于分凝离析效应,杂质在另一端被浓缩。
3. 工业生产采有坩埚直接法和悬浮区熔法。

锗粉文献

Modification of the cellulosic component of hemp fibers using sulfonic acid derivatives: Surface and thermal characterization.

Carbohydr. Polym. 134 , 230-9, (2015)

The aim of this study was to characterize the surface, morphological, and thermal properties of hemp fibers treated with two commercially available, inexpensive, and water soluble sulfonic acid deriva...

Toxic impact of bromide and iodide on drinking water disinfected with chlorine or chloramines.

Environ. Sci. Technol. 48(20) , 12362-9, (2014)

Disinfectants inactivate pathogens in source water; however, they also react with organic matter and bromide/iodide to form disinfection byproducts (DBPs). Although only a few DBP classes have been sy...

Optimization of chemical and instrumental parameters in hydride generation laser-induced breakdown spectrometry for the determination of arsenic, antimony, lead and germanium in aqueous samples.

Anal. Chim. Acta 770 , 7-17, (2013)

A laser induced breakdown spectrometry hyphenated with on-line continuous flow hydride generation sample introduction system, HG-LIBS, has been used for the determination of arsenic, antimony, lead an...


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相关化合物

【锗粉】化源网提供锗粉CAS号7440-56-4,锗粉MSDS及其说明、性质、英文名、生产厂家、作用/用途、分子量、密度、沸点、熔点、结构式等。CAS号查询锗粉上化源网,专业又轻松。>>电脑版:锗粉

标题:锗粉_MSDS_用途_密度_锗粉CAS号【7440-56-4】_化源网 地址:https://www.chemsrc.com/amp/cas/7440-56-4_1196522.html