Germanium

Melting point :937 °C (lit.)
Boiling point :2830 °C (lit.)
Density :5.35 g/mL at 25 °C (lit.)
vapor pressure :0Pa at 25℃
storage temp. :Flammables area
solubility :insoluble in H2O, dilute acid solutions, alkaline solutions
form :powder
Specific Gravity :5.35
color :Silver
Resistivity :53000 μΩ-cm, 20°C
Water Solubility :insoluble H2O, HCl, dilute alkali hydroxides; attacked by aqua regia [MER06]
Crystal Structure :Cubic, Diamond Structure - Space Group Fd3m
Merck :13,4419
Exposure limits :ACGIH: TWA 0.5 ppm(2.5 mg/m3); Ceiling 2 ppm (Skin)
OSHA: TWA 3 ppm
NIOSH: IDLH 30 ppm(250 mg/m3); TWA 3 ppm(2.5 mg/m3); Ceiling 6 ppm(5 mg/m3) Stability :Stable. Slightly soluble in strong acids. Incompatible with strong oxidizing agents.
LogP :4.14 at 20℃
CAS DataBase Reference :7440-56-4(CAS DataBase Reference)
NIST Chemistry Reference :Germanium(7440-56-4)
EPA Substance Registry System :Germanium (7440-56-4)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H228 Flammable solid Flammable solids Category 1 Category 2 Danger Warning P210, P240,P241, P280, P370+P378 H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240 Ground/bond container and receiving equipment. P273 Avoid release to the environment. P308+P313 IF exposed or concerned: Get medical advice/attention.