碳化钨 ,Tungsten carbide ,≥99% trace metals ba
产品编号:SIGMA-778346| CAS NO:12070-12-1| 分子式:WC| 分子量:195.85
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产品名称 | 碳化钨 |
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英文名称 | Tungsten carbide |
CAS编号 | 12070-12-1 |
产品熔点 | 2870ºC |
产品沸点 | 6000ºC |
产品密度 | 15.63 g/cm3 |
精确质量 | 195.950897 |
LogP | 0.08130 |
外观性状 | 灰色至黑色粉末 |
溶解性 | Soluble in nitric acid and hydrofluroic acid. Insoluble in water. |
稳定性 | 常温常压下稳定 避免的物料 氧化物.溶于硝酸与氢氟酸的混酸和王水中,不溶于冷水。相对密度d181563。耐酸性强。硬度高。弹性模量大。 灰色带有金属光泽的粉末,含理论结合碳为6.13%(质量分数)。耐酸性强[108]。属于六方晶系,a=0.2900nm,c=0.2831nm。密度15.7g/cm3、微维氏硬度(负荷50g)为2080kg/mm2。很硬、弹性率也大(72700kg/mm2)。熔点虽高(据记载有2600℃,也有2870℃,因为熔融时发生分解所以不准确),但因形成蒸气压高的多孔性氧化物,故耐酸性下降。沸点6000℃,不溶于冷水,溶于HNO3和HF的混合酸中。 |
储存条件 | 应贮存在阴凉、干燥的库房中,运输中要注意包装容器完好,防雨淋和防日光曝晒 |
相关文档
化学品安全说明书(MSDS)
下载MSDS质检证书(COA)
相关产品
个人防护装备 | Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter |
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危害码 (欧洲) | T |
风险声明 (欧洲) | R23 |
安全声明 (欧洲) | 22-24/25 |
危险品运输编码 | UN3178 |
WGK德国 | - |
RTECS号 | YO7250000 |
包装等级 | III |
危险类别 | 4.1 |
Synonym:Tungsten Monocarbide Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
Risk Phrases: 23 Section 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW
Toxic by inhalation.The toxicological properties of this material have not been fully investigated. Potential Health Effects Eye: May cause eye irritation. Skin: May cause skin irritation. Ingestion: May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. Inhalation: May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. Chronic: No information found. Section 4 - FIRST AID MEASURES Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Ingestion: Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Notes to Physician: Section 5 - FIRE FIGHTING MEASURES General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing Media: Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. Exposure Limits CAS# 12070-12-1: United Kingdom, WEL - TWA: (listed as tungsten, insoluble compoun 5 mg/m3 TWA (as W) United Kingdom, WEL - STEL: (listed as tungsten, insoluble compounds): 10 mg/m3 STEL (as W) Belgium - TWA: (listed as tungsten, insoluble compounds): 5 mg/m3 (as W) Belgium - STEL: (listed as tungsten, insoluble compounds): 10 mg/ VLE (as W) Malaysia: (listed as tungsten, insoluble compounds): 5 mg/m3 TWA W) Netherlands: (listed as tungsten, insoluble compounds): 5 mg/m3 M (as W) Russia: 6 mg/m3 TWA (as W) Spain: (listed as tungsten, insoluble compounds): 5 mg/m3 VLA-ED W) Spain: (listed as tungsten, insoluble compounds): 10 mg/m3 VLA-EC W) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. Respirators: A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use. Section 9 - PHYSICAL AND CHEMICAL PROPERTIES Physical State: Solid Color: white to off-white Odor: Not available. pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: Not available. Autoignition Temperature: Not applicable. Flash Point: Not applicable. Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: Solubility in water: Specific Gravity/Density: Molecular Formula: CW Molecular Weight: 195.86 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Stable under normal temperatures and pressures. Conditions to Avoid: Incompatible materials, dust generation, excess heat, strong oxidants. Incompatibilities with Other Materials: Oxidizing agents. Hazardous Decomposition Products: Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide. Hazardous Polymerization: Has not been reported Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 12070-12-1: YO7250000 LD50/LC50: Not available. Carcinogenicity: Tungsten Carbide - Not listed by ACGIH, IARC, or NTP. Other: See actual entry in RTECS for complete information. Section 12 - ECOLOGICAL INFORMATION Section 13 - DISPOSAL CONSIDERATIONS Dispose of in a manner consistent with federal, state, and local regulations. Section 14 - TRANSPORT INFORMATION IATA Not regulated as a hazardous material. IMO Not regulated as a hazardous material. RID/ADR Not regulated as a hazardous material. Section 15 - REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives Hazard Symbols: T Risk Phrases: R 23 Toxic by inhalation. Safety Phrases: S 22 Do not breathe dust. S 28A After contact with skin, wash immediately with plenty of water. S 37 Wear suitable gloves. S 45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). WGK (Water Danger/Protection) CAS# 12070-12-1: 0 Canada CAS# 12070-12-1 is listed on Canada's DSL List. CAS# 12070-12-1 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 12070-12-1 is listed on the TSCA inventory. SECTION 16 - ADDITIONAL INFORMATION N/A |