12254-85-2

• 常用中文名：砷化铬
• 常用英文名：Chromium Arsenic
• CAS号：12254-85-2
• 分子式：AsCr₂H
• 分子量：179.92200
• 发布时间：2018-08-04 18:06:48
• 更新时间：2024-01-13 20:41:19

名称

• 中文名: 砷化铬
• 英文名: arsanylidynechromium
• 英文别名: chromiumylidynearsane; EINECS 235-499-6; Chromium arsenide; MFCD00198045

物化性质

• 密度: 7.04 g/cm3
• 分子式: AsCr₂H
• 分子量: 179.92200
• 精确质量: 179.81000
• 外观性状: 灰色固体
• 储存条件:

  常温密闭避光，通风干燥处

• 稳定性:

  常温常压下稳定

  避免光，明火，高温

• 分子结构:

  1、摩尔折射率：无可用的

  2、摩尔体积（cm³/mol）：无可用的

  3、等张比容（90.2K）：无可用的

  4、表面张力（dyne/cm）：无可用的

  5、介电常数：无可用的

  6、极化率（10^-24cm³）：无可用的

  7、单一同位素质量：178.802621 Da

  8、标称质量：179 Da

  9、平均质量：178.9138 Da

• 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:2

  8.表面电荷:0

  9.复杂度:10

  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:1

• 更多:

  1. 性状：四方晶系，a=0.361nm，c=0.633nm

  2. 密度（g/mL,20℃）：7.02

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：未确定

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC，1mmHg）：未确定

  7. 折射率：未确定

  8. 闪点（ºC）：未确定

  9. 比旋光度（º）：未确定

  10. 自燃点或引燃温度（ºC）：未确定

  11. 蒸气压（20ºC）：未确定

  12. 饱和蒸气压（kPa,60ºC）：未确定

  13. 燃烧热（KJ/mol）：未确定

  14. 临界温度（ºC）：未确定

  15. 临界压力（KPa）：未确定

  16. 油水（辛醇/水）分配系数的对数值：未确定

  17. 爆炸上限（%,V/V）：未确定

  18. 爆炸下限（%,V/V）：未确定

  19. 溶解性：不溶于水

MSDS

Section 1: Product Identification Chemical Name:Chromium arsenide (99%-Cr) CAS Registry Number:12254-85-2 Formula:AsCr2 EINECS Number:235-499-6 Chemical Family:inorganic compound Synonym:Dichromium arsenide Section 2: Composition and Information on Ingredients IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL) Title compound12254-85-2100%0.5mg/m3 (as Cr)0.5mg/m3 (as Cr) Section 3: Hazards Identification Emergency Overview:Toxic by inhalation and if swallowed. Irritating to ski, eyes and respiratory tract. May cause cancer. Primary Routes of Exposure:Inhalation, ingestion, skin, eyes Eye Contact:Causes mild to severe irritation of the eyes. Skin Contact:Causes irritation of the skin, ulceration, spotty pigmentation and skin cancer. Severely irritating to the nose and respiratory tract. May induce perforation of the nasal septum and cause Inhalation: arsenic poisoning. Toxic if swallowed. Ingestion may lead to nausea, vomiting, bloody diarrhea, weakness, low blood pressure, Ingestion: shock, coma and death. Acute Health Affects:Toxic by inhalation and if swallowed. Irritating to skin, eyes and respiratory tract. Prolonged exposure to arsenic compounds may cause loss of appetite, dermatitis, diarrhea, kidney and liver Chronic Health Affects: damage, nervous disorders, and cancer of the skin, lungs and liver. May impair fertility. NTP:Yes IARC:Yes OSHA:Yes 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:no data Autoignition Temperature:no data Explosion Limits:no data Extinguishing Medium:carbon dioxide, dry powder or foam 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, toxic arsine gas may be produced. Decomposion Products: Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards. SECTION 6: Accidental Release Measures Small spills can be mixed with vermiculite, sodium carbonate or other suitable noncombustible adsorbent and Spill and Leak Procedures: swept up. SECTION 7: Handling and Storage Handling and Storage:Store material in a tightly sealed container. Keep away from heat and moisture. 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: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:Handle the material in an efficient fume hood. Additional Protection:No additional protection required. SECTION 9: Physical and Chemical Properties Color and Form:black pwdr. Molecular Weight:178.98 Melting Point:no data Boiling Point:no data Vapor Pressure:no data Specific Gravity:no data 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 acids, oxidizing agents and steam Decomposition Products:arsenic oxide and chromium oxide. Steam may produce arsine gas. SECTION 11: Toxicological Information RTECS Data:No information available in the RTECS files. Carcinogenic Effects:Carcinogen (as As) Mutagenic Effects:no data Tetratogenic Effects:Reproductive effector (as As) SECTION 12: Ecological Information Ecological Information:Very toxic to aquatic organisms. May cause long-term adverse effects in the aquatic environment. SECTION 13: Disposal Considerations Disposal:Dispose of according to local, state and federal regulations. SECTION 14: Transportation Shipping Name (CFR):Arsenic compounds, Solid, N.O.S. Hazard Class (CFR):6.1 Additional Hazard Class (CFR):NA Packaging Group (CFR):II UN ID Number (CFR):UN# 1557 Shipping Name (IATA):Arsenic compound, Solid, N.O.S. Hazard Class (IATA):6.1 Additional Hazard Class (IATA):NA Packaging Group (IATA):II UN ID Number (IATA):UN# 1557 SECTION 15: Regulatory Information TSCA:Listed in the TSCA inventory. SARA (Title 313):See Category Codes N020 and N090 for reporting. Second Ingredient:none SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

毒理学数据: 主要的刺激性影响： 在皮肤上面：刺激皮肤和粘膜 在眼睛上面：刺激的影响 致敏作用：通过吸入可能造成敏化作用 通过皮肤接触可能造成敏化作用 生态学数据: 对水是危害的即使小量的产品渗入地下水也会对饮水造成危害，若无政府许可，勿将材料排入周围环境。

安全

• 危害码 (欧洲): T+
• 风险声明 (欧洲): 23/25-50/53
• 安全声明 (欧洲): 20/21-28-45-60-61
• 危险品运输编码: UN1557
• 包装等级: II
• 危险类别: 6.1

制备

铬与砷在惰性气氛中加热可制得砷化铬。