12002-99-2

• 常用中文名：碲化银
• 常用英文名：SILVER TELLURIDE
• CAS号：12002-99-2
• 分子式：Ag₂Te
• 分子量：343.33600
• 相关类别： 无机化工 无机盐 胶态贵金属及其化合物
• 发布时间：2018-02-10 08:00:00
• 更新时间：2024-01-05 16:32:23
• 下载msds

名称

• 中文名: 碲化银(I)
• 英文名: silver,tellurium
• 中文别名: 碲化银
• 英文别名: Disilver telluride; EINECS 234-419-7; Silver telluride; MFCD00014146

物化性质

• 密度: 8.5 g/mL at 25 °C(lit.)
• 熔点: 955ºC
• 分子式: Ag₂Te
• 分子量: 343.33600
• 精确质量: 343.71600
• 外观性状: crystal | black
• 储存条件:

  密封于阴凉干燥处。

• 稳定性:

  遵照规格使用和储存则不会分解。

  在空气中相当稳定，不溶于水和硝酸以外的酸；但溶于氰化钾溶液；将其加热至300～600℃时，有部分分解而生成“毛银”。

• 分子结构:

  1、摩尔折射率：无可用

  2、 摩尔体积（cm³/mol）： 无可用

  3、 等张比容（90.2K）：无可用

  4、 表面张力（dyne/cm）：无可用

• 计算化学:

  1.疏水参数计算参考值（XlogP）:无

  2.氢键供体数量:0

  3.氢键受体数量:0

  4.可旋转化学键数量:0

  5.互变异构体数量:无

  6.拓扑分子极性表面积0

  7.重原子数量:3

  8.表面电荷:0

  9.复杂度:2.8

  10.同位素原子数量:0

  11.确定原子立构中心数量:0

  12.不确定原子立构中心数量:0

  13.确定化学键立构中心数量:0

  14.不确定化学键立构中心数量:0

  15.共价键单元数量:3

• 更多:

  1. 性状：灰色立方晶体

  2. 密度（g/mL,25/4℃）： 8.5

  3. 相对蒸汽密度（g/mL,空气=1）：无可用

  4. 熔点（ºC）：955

  5. 沸点（ºC,常压）：无可用

  6. 沸点（ºC,5.2kPa）： 无可用

  7. 折射率： 无可用

  8. 闪点（ºC）： 无可用

  9. 比旋光度（º）：无可用

  10. 自燃点或引燃温度（ºC）：无可用

  11. 蒸气压（kPa,25ºC）：无可用

  12. 饱和蒸气压（kPa,60ºC）：无可用

  13. 燃烧热（KJ/mol）：无可用

  14. 临界温度（ºC）：无可用

  15. 临界压力（KPa）：无可用

  16. 油水（辛醇/水）分配系数的对数值：无可用

  17. 爆炸上限（%,V/V）：无可用

  18. 爆炸下限（%,V/V）： 无可用

  19. 溶解性：无可用

MSDS

Section 1: Product Identification Chemical Name:Silver telluride (99.99%-Ag/Te) PURATREM CAS Registry Number:12002-99-2 Formula:Ag2Te EINECS Number:234-419-7 Chemical Family:metal chalcogenides Synonym:none Section 2: Composition and Information on Ingredients IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title Compound12002-99-2100%0.1mg/m3 (as Te)0.1mg/m3 (as Te) Section 3: Hazards Identification May be harmful if swallowed. Chronic exposure may lead to a skin discoloration. Inhalation of dust may cause Emergency Overview: garlic odor of breath, metallic taste, sleepiness, headache and nausea. Primary Routes of Exposure:Ingestion , inhalation, skin, and eyes. Eye Contact:May be a mild to moderate irritant to the eyes. Skin Contact:May cause slight irritation of the skin. Inhalation of dust can lead to irritation of the respiratory tract garlic odor of breath, metallic taste, sleepiness, Inhalation: headache and nausea. Ingestion of only moderate amounts of tellurium may lead to nausea, vomiting, bloody diarrhea, weakness, Ingestion: and death. Acute Health Affects:May cause garlic odor of breath, metallic taste, sleepiness, headache and nausea. Long term exposure to silver and silver salts can lead to the condition known as argyria-a general gray Chronic Health Affects:pigmentation of the skin and mucous membranes. Prolonged exposure to tellurium may cause drowsiness and loss of appetite. NTP:No IARC:No OSHA:No SECTION 4: First Aid Measures Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need Eye Exposure: assistance in keeping their eye lids open. Get immediate medical attention. Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if Skin Exposure: irritation persists. Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty Inhalation: in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance. Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce Ingestion: vomiting only if directed by medical personnel. SECTION 5: Fire Fighting Measures Flash Point:not applicable Autoignition Temperature:none Explosion Limits:none Extinguishing Medium:none required If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure Special Fire Fighting Procedures: self- contained breathing apparatus and full protective clothing. Hazardous Combustion andIf involved in a fire this material may emit toxic fumes. Decomposion Products: Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards. SECTION 6: Accidental Release Measures To avoid raising dust, small spills may be mixed with diatomaceous earth, sand, vermiculite, or other suitable Spill and Leak Procedures: inert material and swept up. SECTION 7: Handling and Storage Handling and Storage:Store in a cool, dry place in a tightly sealed container. SECTION 8: Exposure Controls and Personal Protection Eye Protection:Always wear approved safety glasses when handling a chemical substance in the laboratory. Skin Protection:Wear protective clothing and gloves. Ventilation:Material may form a fine dust. If possible, handle the material in an efficient fume hood. If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator Respirator: Protection Program to be in compliance with 29 CFR 1910.134. Ventilation:Material may form a fine dust. If possible, handle the material in an efficient fume hood. Additional Protection:No additional protection required. SECTION 9: Physical and Chemical Properties Color and Form:black xtl. Molecular Weight:343.34 Melting Point:955°C Boiling Point:no data Vapor Pressure:no data Specific Gravity:8.5 Odor:none Solubility in Water:insoluble SECTION 10: Stability and Reactivity Stability:air and moisture stable Hazardous Polymerization:no hazardous polymerization Conditions to Avoid:none Incompatibility:strong mineral acids and oxidizing agents Decomposition Products:tellurium oxide SECTION 11: Toxicological Information RTECS Data:No information available in the RTECS files. Carcinogenic Effects:No data Mutagenic Effects:No data Tetratogenic Effects:No data SECTION 12: Ecological Information Ecological Information:No information available SECTION 13: Disposal Considerations Disposal:Dispose of according to local, state and federal regulations. SECTION 14: Transportation Shipping Name (CFR):Non-hazardous Hazard Class (CFR):NA Additional Hazard Class (CFR):NA Packaging Group (CFR):NA UN ID Number (CFR):NA Shipping Name (IATA):Non-hazardous Hazard Class (IATA):NA Additional Hazard Class (IATA):NA Packaging Group (IATA):NA UN ID Number (IATA):NA SECTION 15: Regulatory Information TSCA:Listed in the TSCA inventory. SARA (Title 313):Title compound: See category N740 for reporting. Second Ingredient:None SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

生态学数据: 该物质对环境可能有危害，对水体应给予特别注意。

安全

• 个人防护装备: Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
• 危害码 (欧洲): C
• 危险品运输编码: UN 3288
• WGK德国: 3
• 包装等级: III
• 危险类别: 6.1(b)

制备

在真空容器中，将银和碲一起加热至微红，则可得碲化银。或用碲与热的硝酸银溶液反应制得。此外将H2Te与可溶性银盐溶液反应，也可制得碲化银。