PRODUCT Properties
| Melting point: | 824 °C(lit.) |
| Boiling point: | 1196 °C(lit.) |
| Density | 6.54 g/mL at 25 °C(lit.) |
| storage temp. | Flammables area |
| solubility | soluble in dilute acid solutions |
| form | powder |
| color | Silver-gray |
| Specific Gravity | 6.97 |
| PH | 0.5 (20°C in H2O) |
| Resistivity | 28 μΩ-cm, 20°C |
| Water Solubility | It reacts slowly with water and is soluble in dilute acids. |
| Sensitive | Air & Moisture Sensitive |
| Merck | 13,10160 |
| Exposure limits | ACGIH: TWA 2 ppm; STEL 4 ppm OSHA: TWA 2 ppm(5 mg/m3) NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) |
| Shear Modulus | 9.90 GPa |
| Bulk Modulus | 30.5 GPa |
| Hardness, Vickers | 17 |
| Poissons Ratio | 0.207 |
| CAS DataBase Reference | 7440-64-4(CAS DataBase Reference) |
| EPA Substance Registry System | Ytterbium (7440-64-4) |
Description and Uses
There is not much commercial use for ytterbium. Radioactive ytterbium can be used for asmall portable X-ray source and as an alloy to make special types of strong steel. The oxides ofytterbium are used to make lasers and some synthetic gemstones.
Safety
| Symbol(GHS) |   GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H228-H302+H312+H332-H315-H319-H335 |
| Precautionary statements | P210-P280-P301+P312-P302+P352+P312-P304+P340+P312-P305+P351+P338 |
| Hazard Codes | Xn,F,Xi |
| Risk Statements | 36/37/38-20/21/22-11-36/38 |
| Safety Statements | 36-33-16-26 |
| RIDADR | UN 3089 4.1/PG 2 |
| WGK Germany | 3 |
| RTECS | ZG1925000 |
| TSCA | Yes |
| HazardClass | 4.2 |
| PackingGroup | I |
| HS Code | 28053090 |
