A7678812
Tantalum high-CV powder , 23K , 7440-25-7
CAS NO.：7440-25-7
Empirical Formula: Ta
Molecular Weight: 180.95
MDL number: MFCD00011252
EINECS: 231-135-5
| Pack Size | Price | Stock | Quantity |
| 5G | RMB159.20 | In Stock |
|
| 25G | RMB519.20 | In Stock |
|
| 100G | RMB1599.20 | In Stock |
|
| 500G | RMB5919.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 2996 °C (lit.) |
| Boiling point: | 5425 °C (lit.) |
| bulk density | 500kg/m3 |
| Density | 16.69 g/cm3 (lit.) |
| vapor pressure | <0.01 mm Hg ( 537.2 °C) |
| storage temp. | no restrictions. |
| solubility | reacts with HF |
| form | wire |
| color | Gray to silver |
| Specific Gravity | 16.6 |
| PH | 7 (20°C in H2O, aqueous suspension) |
| Flame Color | Blue |
| Resistivity | 13.5 μΩ-cm, 20°C |
| Water Solubility | very resistant to attack by acids except HF, resistant to alkali solutions [KIR83] |
| Merck | 13,9143 |
| 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. Powder is very flamable. |
| InChIKey | GUVRBAGPIYLISA-UHFFFAOYSA-N |
| LogP | -1 at 20℃ |
| Hardness, Vickers | 90 |
| Modulus of Elasticity | 179 GPa |
| Poissons Ratio | 0.35 |
| Shear Modulus | 69.0 GPa |
| Hardness, Brinell | 95, Converted from Vickers for 3000 kg load/10 mm ball Brinell test. |
| Hardness, Rockwell A | 35, Converted from Vickers. |
| Hardness, Rockwell B | 51, Converted from Vickers. |
| Vickers Microhardness | 70 - 80, Electron beam melted, cold rolled, then annealed at 1200°C |
| Hardness, Rockwell C | 12, Converted from Vickers. |
| CAS DataBase Reference | 7440-25-7(CAS DataBase Reference) |
| EPA Substance Registry System | Tantalum (7440-25-7) |
Description and Uses
Manufacture of capacitors and other electronic components; chemical equipment and corrosion-resistant tools.
Safety
| Symbol(GHS) |  GHS02 |
| Signal word | Danger |
| Hazard statements | H228 |
| Precautionary statements | P210-P240-P241-P280-P370+P378 |
| Hazard Codes | F,Xi,Xn,C |
| Risk Statements | 11-36/37/38-20/21/22-40-34-36/38 |
| Safety Statements | 16-26-33-36/37/39-36-45-27-36/37 |
| RIDADR | UN 3089 4.1/PG 2 |
| OEB | B |
| OEL | TWA: 5 mg/m3, STEL: 10 mg/m3 |
| WGK Germany | - |
| RTECS | WW5505000 |
| Autoignition Temperature | 572 °F |
| TSCA | Yes |
| HazardClass | 4.1 |
| PackingGroup | II |
| HS Code | 8103909000 |
| Hazardous Substances Data | 7440-25-7(Hazardous Substances Data) |
| IDLA | 2,500 mg Ta/m3 |
| Limited Quantities | 1.0 Kg (2.2 lbs) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) |
