球形钽粉
| 中文名称 | 球形钽粉 |
|---|---|
| 中文同义词 | 钽粉,-100目,PURATRONIC|R,99.98%(METALSBASIS),NB50PPM;钽溅射靶,76.2MM(3.0IN)DIAX6.35MM(0.250IN)THICK,99.95%(METALSBASISEXCLUDINGNB);钽柱体,3.175MM(0.125IN)DIAX3.175MM(0.125IN)LENGTH,99.95%(METALSBASIS);钽柱, 3.175MM (0.125IN) 直径 X 3.175MM (0.125IN) 长, 99.95% (METALS BASIS);钽粉, APS≈2微米, 99.9% (METALS BASIS);钽线, 0.05MM (0.002IN) 直径, 退火, 99.9% (METALS BASIS);钽薄箔, 0.0025MM (0.0001IN) 厚, 99.9% (METALS BASIS);钽箔, 1.0MM (0.04IN) 厚, 99.95% (METALS BASIS) |
| 英文名称 | Tantalum |
| 英文同义词 | TANTALUM TUBING;TANTALUM STANDARD;TANTALUM SINGLE ELEMENT PLASMA STANDARD;TANTALUM SINGLE ELEMENT STANDARD;TANTALUM;TANTALUM ICP STANDARD;TANTALUM PLASMA EMISSION SPECTROSCOPY STANDARD;TANTALUM PLASMA EMISSION STANDARD |
| CAS号 | 7440-25-7 |
| 分子式 | Ta |
| 分子量 | 180.95 |
| EINECS号 | 231-135-5 |
| 相关类别 | 钽;无机单元素标准溶液;催化和无机化学;通用试剂;微生物;Inorganics;镀膜材料;TantalumMetal and Ceramic Science;Catalysis and Inorganic Chemistry;metal or element;标准品和标准物质;单质金属粉体-钽粉;单质-钽粉;金属粉末;金属单质;Metal and Ceramic Science;Metals;Tantalum;73: Ta;TantalumNanomaterials;Materials Science;Nanomaterials;Nanoparticles: Metals and Metal AlloysMetal and Ceramic Science;Nanopowders and Nanoparticle Dispersions;Chemical Synthesis |
| Mol文件 | 7440-25-7.mol |
| 结构式 |  |
球形钽粉 性质
| 熔点 | 2996 °C (lit.) |
|---|---|
| 沸点 | 5425 °C (lit.) |
| 密度 | 16.69 g/cm3 (lit.) |
| 堆积密度 | 500kg/m3 |
| 蒸气压 | <0.01 mm Hg ( 537.2 °C) |
| 储存条件 | no restrictions. |
| 溶解度 | 与HF反应 |
| 形态 | 金属丝状 |
| 颜色 | 灰色至银色 |
| 比重 | 16.6 |
| PH值 | 7 (20°C in H2O, aqueous suspension) |
| Flame Color | Blue |
| 电阻率 (resistivity) | 13.5 μΩ-cm, 20°C |
| 电导率 | 7.7× 106S/m |
| 水溶解性 | very resistant to attack by acids except HF, resistant to alkali solutions [KIR83] |
| 热导率 | 57 W/(m·K) |
| 比热容 | Cp(crystal): 0.14 J/(g·K); Cp(gas): 0.12 J/(g·K), at 25℃ |
| Merck | 13,9143 |
| 暴露限值 | ACGIH TLV-TWA:0.5 ppm(2.5 mg/m3);TLV-CEILING:2 ppm (Skin) OSHA PEL-TWA:5 mg/m3 NIOSH REL-TWA:5 mg/m3;REL-STEL:10 mg/m3;REL-Ceiling:6 ppm(5 mg/m3);REL-IDLH:30 ppm(250 mg/m3) |
| 稳定性 | 稳定的。粉末非常易燃。 |
| InChI | 1S/Ta |
| InChIKey | GUVRBAGPIYLISA-UHFFFAOYSA-N |
| SMILES | [Ta] |
| LogP | -1 at 20℃ |
| Hardness, Vickers | 90 |
| Modulus of Elasticity | 179 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. |
| Poissons Ratio | 0.35 |
| Shear Modulus | 69.0 GPa |
| Vickers Microhardness | 70 - 80, Electron beam melted, cold rolled, then annealed at 1200°C |
| Hardness, Rockwell C | 12, Converted from Vickers. |
| CAS 数据库 | 7440-25-7(CAS DataBase Reference) |
| EPA化学物质信息 | Tantalum (7440-25-7) |
安全信息
| 危险品标志 | F,Xi,Xn,C |
|---|---|
| 危险类别码 | 11-36/37/38-20/21/22-40-34-36/38 |
| 安全说明 | 16-26-33-36/37/39-36-45-27-36/37 |
| 危险品运输编号 | UN 3089 4.1/PG 2 |
| 职业暴露等级 | B |
| 职业暴露限值 | TWA: 5 mg/m3, STEL: 10 mg/m3 |
| WGK Germany | - |
| RTECS号 | WW5505000 |
| 自燃温度 | 572 °F |
| TSCA | TSCA listed |
| 危险等级 | 4.1 |
| 包装类别 | II |
| 海关编码 | 8103909000 |
| 毒害物质数据 | 7440-25-7(Hazardous Substances Data) |
| 立即威胁生命和健康浓度 | 2,500 mg Ta/m3 |
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