硫化银, 99.998% metals basis,Silver sulfide
产品编号:西域试剂-WR364640| CAS NO:21548-73-2| MDL NO:MFCD00003406| 分子式:Ag2S| 分子量:247.8
本网站销售的所有产品仅用于工业应用或者科学研究等非医疗目的,不可用于人类或动物的临床诊断或者治疗,非药用,非食用,
产品名称 | 硫化银, 99.998% metals basis |
---|---|
英文名称 | Silver sulfide |
CAS编号 | 21548-73-2 |
产品熔点 | 845 °C(lit.) |
产品密度 | 7.234 g/mL at 25 °C(lit.) |
精确质量 | 245.782257 |
PSA | 25.30000 |
LogP | 0.64820 |
外观性状 | 黑色立方体晶体 |
稳定性 | 如果遵照规格使用和储存则不会分解 避免接触氧化物,酸。β-Ag2S为灰黑色正交晶体,相对密度7.326,在175℃转化为α-Ag2S;α-Ag2S为黑色立方晶体,相对密度7.317,熔点825℃。硫化银极难溶于水;几乎不溶于稀的非氧化性酸;不溶于氨水和氨盐溶液;但溶于碱金属氰化物溶液和硝酸;浓H2SO4能将Ag2S转化为硫酸银和硫。硫化银在室温和空气中是稳定的,但在真空中加热至350℃以上,则有丝状金属银生成。若直接在空气中加热,则硫化银易被氧化成硫酸银。 |
储存条件 | 保持贮藏器密封 放入紧密的贮藏器内,储存在阴凉,干燥的地方 |
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 | dust mask type N95 (US);Eyeshields;Gloves |
---|---|
危害码 (欧洲) | Xi: Irritant; |
风险声明 (欧洲) | R36/37/38 |
安全声明 (欧洲) | S26-S36 |
危险品运输编码 | NONH for all modes of transport |
WGK德国 | 3 |
Synonym:Non Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
Risk Phrases: None Listed. Section 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW
Light sensitive.The toxicological properties of this material have not been fully investigated. Potential Health Effects Eye: May cause eye irritation. No information regarding eye irritation and other potential effects was found. Skin: May cause skin irritation. No information regarding skin irritation and other potential effects was found. Ingestion: The toxicological properties of this substance have not been fully investigated. Inhalation: 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 immediately. Skin: Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Ingestion: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately. Inhalation: Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. 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. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Clean up spills immediately, observing precautions in the Protective Equipment section. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Storage: Store in a cool, dry place. Keep container closed when not in use. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels. Exposure Limits CAS# 21548-73-2: Japan: (listed as silver compounds): 0.01 mg/m3 OEL (as Ag) 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 minimize contact with skin. Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Section 9 - PHYSICAL AND CHEMICAL PROPERTIES Physical State: Solid Color: black Odor: Not available. pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: 845 deg C Autoignition Temperature: Not available. Flash Point: Not available. Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: Solubility in water: Specific Gravity/Density: 7.2340g/cm3 Molecular Formula: Ag2S Molecular Weight: 247.80 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Stable under normal temperatures and pressures. Conditions to Avoid: None reported. Incompatibilities with Other Materials: None reported.. Hazardous Decomposition Products: Irritating and toxic fumes and gases. Hazardous Polymerization: Has not been reported Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 21548-73-2 unlisted. LD50/LC50: Not available. Carcinogenicity: Silver sulfide - Not listed by ACGIH, IARC, or NTP. 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 Shipping Name: Not regulated. Hazard Class: UN Number: Packing group: Section 15 - REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives Hazard Symbols: Not available. Risk Phrases: Safety Phrases: S 24/25 Avoid contact with skin and eyes. WGK (Water Danger/Protection) CAS# 21548-73-2: 0 Canada CAS# 21548-73-2 is listed on Canada's DSL List. CAS# 21548-73-2 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 21548-73-2 is listed on the TSCA inventory. SECTION 16 - ADDITIONAL INFORMATION N/A |