The substance germanium is a mono-constituent substance (inorganic) having the following characteristics and physical–chemical properties (see the IUCLID dataset for further details).
Substance identity:
| EC number | 231-164-3 |
| EC name | germanium |
| CAS number (EC inventory) | 7440-56-4 |
| CAS number | 7440-56-4 |
| IUPAC name | germanium (4+) |
| Synonyms | Germanium |
| Molecular formula | Ge |
| Molecular weight range | 72.638 |
2. Composition of the substance:
Name: Germanium
State/form: solid: particulate/powder
Degree of purity: >=95 - <100 % (w/w)
Constituents (Germanium)
| Constituent | Typical concentration | Concentration range | Remarks |
| germanium EC no.: 231-164-3 | >=97 % (w/w) | >95 - <100 % (w/w) |
Impurities (Germanium)
| Constituent | Typical concentration | Concentration range | Remarks |
| germanium dioxide EC no.: 215-180-8 | <=3 % (w/w) | >=0 - <5 % (w/w) |
3. Classification
| Reproductive Toxicity |
Repr. 2 Specific effect: reduction of implantation sites Route of exposure: Oral |
H361: Suspected of damaging fertility or the unborn child |
| Specific target organ toxicity – repeated exposure |
STOT Rep. Exp. 2 Affected organs: kidneys Route of exposure: Oral |
H373: May cause damage to organs |
| Hazards to the aquatic environment (chronic/long-term): | Aquatic Chronic 3 | H412: Harmful to aquatic life with long lasting effects |