Zirconium standard , 1000μg/ml,in1.0mol/LHNO3andtraceHF , 7440-67-7
Synonym(s):
Zirconium;Zirconium element
CAS NO.：7440-67-7
Empirical Formula: Zr
Molecular Weight: 91.22
MDL number: MFCD00011303
EINECS: 231-176-9
PRODUCT Properties
| Melting point: | 1852 °C(lit.) |
| Boiling point: | 4377 °C(lit.) |
| Density | 1.01 g/mL at 25 °C |
| solubility | soluble in hot concentrated acid solutions |
| form | wire |
| color | Gray to silver |
| Specific Gravity | 6.506 |
| Resistivity | 40 μΩ-cm, 20°C |
| Water Solubility | Soluble in water. |
| Sensitive | air sensitive |
| Merck | 13,10226 |
| Exposure limits | TLV-TWA 0.05 mg (Zr)/m3 (ACGIH) PEL-TWA: 0.05 mg (Zr)/m3 (OSHA) STEL 10 mg (Zr)/m3 (NIOSH and OSHA) IDLH 500 mg Zr/m3 (NIOSH) . |
| InChIKey | QCWXUUIWCKQGHC-UHFFFAOYSA-N |
| CAS DataBase Reference | 7440-67-7(CAS DataBase Reference) |
| EPA Substance Registry System | Zirconium (7440-67-7) |
Description and Uses
Zirconium, is a metallic element with a grayish, crystalline scale or gray amorphous powder form. It is flammable or explosive in the form of a powder or dust and as borings and shavings. The powder should be kept wet in storage. Zirconium is a suspected carcinogen, with a TLV of 5 mg/m3 of air and it is insoluble in water. The four-digit UN identification numbers depend on the form and the amount of water present. The number for zirconium, dry, as wire, sheeting, or in the form of strips is 2009. The number for zirconium, dry, as a wire, sheeting, or as strips that are thinner than 254 μm, but not thinner than 18 μm, is 2858. Dry zirconium metal powder is 2008. Wet zirconium powder is 1358. Zirconium metal in a liquid suspension is 1308. The primary uses are as a coating on nuclear fuel rods, photo flashbulbs, pyrotechnics, explosive primers, and laboratory crucibles.
It is used in lamp filaments; flash bulbs;vacuum tubes and in explosives. It is alsoused as a structural material for nuclearreactors.
Safety
| Symbol(GHS) |  GHS02 |
| Signal word | Danger |
| Hazard statements | H250-H260 |
| Precautionary statements | P210-P231+P232-P233-P280-P302+P335+P334-P302+P335+P334-P370+P378 |
| Hazard Codes | F,Xi,Xn,C |
| Risk Statements | 36/38-17-15-36/37/38-20/21/22-40-34 |
| Safety Statements | 26-43-7/8-36-36/37/39-35-27-16-36/37-45 |
| OEB | B |
| OEL | TWA: 5 mg/m3, STEL: 10 mg/m3 [*Note: The REL applies to all zirconium compounds (as Zr) except Zirconium tetrachloride.] |
| RIDADR | UN 2858 4.1/PG 3 |
| WGK Germany | 2 |
| RTECS | ZH7070000 |
| F | 10 |
| TSCA | Yes |
| HazardClass | 4.2 |
| PackingGroup | III |
| HS Code | 8109200090 |
| Hazardous Substances Data | 7440-67-7(Hazardous Substances Data) |
| IDLA | 25 mg Zr/m3 |
