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| CAS No.: | 7782-65-2 |
|---|---|
| Name: | Germane |
| Molecular Structure: | |
|
|
|
| Formula: | GeH4 |
| Molecular Weight: | 76.6218 |
| Synonyms: | Germaniumhydride (GeH4) (6CI); Germanium tetrahydride; Germanium(4+) hydride;Monogermane; Tetrahydrogermane |
| EINECS: | 231-961-6 |
| Density: | 1,53 g/cm3 |
| Melting Point: | -165°C |
| Boiling Point: | -88°C |
| Solubility: | Insoluble IN WATER |
| Appearance: | Colorless |
| Hazard Symbols: | Toxic material. TLV: 0.2 ppm. |
| Risk Codes: | 17-21/22-23-26-22-12 |
| Safety: | Poison by inhalation. Moderately toxic by ingestion. A hemolytic gas. Ignites spontaneously in air. Incompatible with Br2. See also HYDRIDES, GERMANIUM COMPOUNDS, and GERMANIUM. |
| Transport Information: | 2192 |
| PSA: | 0.00000 |
| LogP: | 0.06920 |
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| Conditions | Yield |
|---|---|
| In neat (no solvent) allowed to stand in the dark for 64 h at ambient temp.; identified spectroscopically; | A n/a B 102 % C 91% |
| In benzene 30 min at 7°C, allowed to warm to 17°C, after 1 h allowed to procced at room temp., reaction time: 170 d; followed by (1)H-NMR; |
| Conditions | Yield |
|---|---|
| In hydrogen bromide according to T.S. Piper, M.K. Wilson, J. Inorg. Nucl. Chem., 4, 22 (1957) and J.E.Griffiths, Inorg. Chem., 2, 375 (1963); collected into -134°C trap, purified by passing through a columnwith silica gel and mol. sieve 5A at -30 °C, detd. by chromy. and mass spectrometric analysis; | 90% |
- 13637-65-5
chlorogermane
- 24331-65-5
bis(difluorophosphino) sulphide
A
- 7782-65-2
germane
B
- 39491-87-7
difluoro(germylthio)phosphine
C
- 14335-40-1
chlorodifluorophosphine
D
- 13780-63-7
difluorophosphine sulfide
| Conditions | Yield |
|---|---|
| mixt. was warmed to 209 K for 2 h; examined by NMR, sepd. by fractional condensation; | A <1 B 87% C n/a D <1 |
- 779289-35-9
tetracarbonylgermyliron(1-)
- 1529-47-1
chlorotrimethylgermane
A
- 7782-65-2
germane
- 121981-67-7
tetracarbonyl(trimethylgermyl)germyliron
C
- 121981-68-8
[Fe2(μ-GeH2)2(CO)8]
D
- 1449-63-4
trimethylgermane
| Conditions | Yield |
|---|---|
| In diethyl ether under N2, 30 min; pumping for 3 h at diffusion pump vacuum, extn. (cyclohexane): ((Fe(CO)4(GeH2))2); | A n/a B 23% C 58% D n/a |
| Conditions | Yield |
|---|---|
| In solid matrix byproducts: LiCl, AlCl3; distilling gaseous GeCl4 in vac. on solid matrix of LiAlH4 in ether (cooled with liq. N2), heating to room temp.;; fractional condensation at -111.9 °C;; | 27.7% |
| In solid matrix byproducts: LiCl, AlCl3; distilling gaseous GeCl4 in vac. on solid matrix of LiAlH4 in ether (cooled with liq. N2), heating to room temp.;; fractional condensation at -111.9 °C;; | 27.7% |
| Conditions | Yield |
|---|---|
| In solid byproducts: Ge, LiI; mechanically acivated interaction in vac. vibrating ball mill, accordingto: V. V. Volkov, K. G. Myakishev, I. I. Gorbacheva, Izv. Sib. Otd. Aka d. Nauk SSSR, Ser. Khim. Nauk, 5 (1983) No. 12, p. 79; monitored by volumetric anal., IR spectroscopy, chem. anal.; | A 1% B n/a |
| Conditions | Yield |
|---|---|
| In hydrogen bromide in dild. aq. HBr soln.; | |
| In hydrogen bromide aq. HBr; in dild. aq. HBr soln.; |
| Conditions | Yield |
|---|---|
| byproducts: H2O; | |
| byproducts: H2O; |
| Conditions | Yield |
|---|---|
| byproducts: H2O; | |
| byproducts: H2O; |
| Conditions | Yield |
|---|---|
| In tetrahydrofuran | |
| In water | |
| In water |
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Chemistry
Molecular Structure:
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Molecular Formula: H4Ge
Molecular Weight: 76.6718
IUPAC Name: Germane
Synonyms of Germane (CAS NO.7782-65-2): EINECS 231-961-6 ; Germanium hydride ; Germanium tetrahydride ; Monogermane ; Germane [UN2192] [Poison gas] ; UN2192
CAS NO: 7782-65-2
Classification Code: TWA (0.2 ppm)
Melting point: -165°C
Boiling Point: -88°C
Density: 1,53 g/cm3
Merck: 13,4418
Uses
Germane (CAS NO.7782-65-2) is used in the semiconductor industry for the epitaxial growth of germanium by MOVPE or chemical beam epitaxy.[5] Organogermanium precursors (e.g. isobutylgermane, alkylgermanium trichlorides, and dimethylaminogermanium trichloride) have been examined as less hazardous liquid alternatives to germane for deposition of Ge-containing films by MOVPE.[6]
Production
A typical synthesis involved the reaction of Na2GeO3 with sodium borohydride.
Na2GeO3 + NaBH4 + H2O → GeH4 + 2 NaOH + NaBO2
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LC50 | inhalation | 1380mg/m3 (1380mg/m3) | BEHAVIORAL: EXCITEMENT BEHAVIORAL: ATAXIA BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY) | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 18(2), Pg. 56, 1974. |
| mouse | LD50 | oral | 1250mg/kg (1250mg/kg) | BEHAVIORAL: EXCITEMENT BEHAVIORAL: ATAXIA BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY) | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 18(2), Pg. 56, 1974. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Hazard Codes of Germane (CAS NO.7782-65-2): 
F
T
Risk Statements: 17-21/22-23
R17: Spontaneously flammable in air.
R21/22: Harmful in contact with skin and if swallowed.
R23: Toxic by inhalation.
Safety Statements: 16-24-26-36/37/39-45
S16: Keep away from sources of ignition.
S24: Avoid contact with skin.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: 2192
RTECS: LY4900000
TSCA: Yes
HazardClass: 2.3
Poison by inhalation. Moderately toxic by ingestion. A hemolytic gas. Ignites spontaneously in air. Incompatible with Br2. See also HYDRIDES, GERMANIUM COMPOUNDS, and GERMANIUM.
Standards and Recommendations
ACGIH TLV: TWA 0.2 ppm
DOT Classification: 2.3; Label: Poison Gas, Flammable Gas