Zirconium , 99.5%metalsbasis (except), ≥200 mesh , 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 |
| storage temp. | 15-25°C |
| solubility | soluble in hot concentrated acid solutions |
| form | wire |
| color | Gray to silver |
| Specific Gravity | 6.506 |
| PH | 0.5 (20°C in H2O) |
| Flame Color | Dull red |
| 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) . |
| Cosmetics Ingredients Functions | ANTIPERSPIRANT |
| InChI | 1S/Zr |
| InChIKey | QCWXUUIWCKQGHC-UHFFFAOYSA-N |
| SMILES | [Zr] |
| Hardness, Rockwell B | 78, Converted from Vickers. Annealed sample |
| Hardness, Vickers | 150, annealed sample |
| Shear Modulus | 35.3 GPa, Calculated |
| Modulus of Elasticity | 94.5 GPa |
| Poissons Ratio | 0.34 |
| Hardness, Brinell | 145, Converted from Vickers for 3000 kg load/10 mm ball. Annealed sample |
| Hardness, Rockwell A | 49, Converted from Vickers. annealed sample |
| 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.
About 90% of all the zirconium produced in the United States is used in the nuclearelectrical power industry. Since it does not readily absorb neutrons, it is a desired metal inthe manufacture of nuclear reactors and their fuel tubes, but it must be free of its “twin”hafnium for these purposes. Zirconium is also used as an alloy with steel to make surgicalinstruments.
Zirconium dioxide (ZrO2) as an abrasive is used to make grinding wheels and specialsandpaper. It is also used in ceramic glazes, in enamels, and for lining furnaces and hightemperature molds. It resists corrosion at high temperatures, making it ideal for crucibles and other types of laboratory ware. ZrO2 is used as a “getter” to remove the last trace of air when producing vacuum tubes.
As mentioned, zircon (ZrSiO4) has many forms, but the most used is the transparent crystalthat is cut to resemble a diamond. There is even one form of zirconium used in medicine: zirconiumcarbonate (3ZrO2CO2H2O), which, as a lotion, can be used to treat poison ivy infections.
When zirconium is alloyed with niobium, it becomes superconductive to electricity attemperatures near absolute zero Kelvin (–273°C).
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 |
| PPE | Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges |
| 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 | TSCA listed |
| HazardClass | 4.2 |
| PackingGroup | III |
| HS Code | 8109200090 |
| Storage Class | 4.2 - Pyrophoric and self-heating hazardous materials |
| Hazard Classifications | Pyr. Sol. 1 Water-react 1 |
| Hazardous Substances Data | 7440-67-7(Hazardous Substances Data) |
| IDLA | 25 mg Zr/m3 |
