Chromium arsenide (Cr2As) | 12254-85-2

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 类金属盐
• 英文名称: Chromium arsenide (Cr2As)
• 英文别名: arsenic;chromium
• CAS: 12254-85-2
• 化学式: AsCr
• 分子量: 126.918
• InChiKey: OTJXRUHUGBSPCL-UHFFFAOYSA-N

物化性质

• 密度：
  7.040
• 暴露限值：
  ACGIH: TWA 0.01 mg/m3NIOSH: IDLH 5 mg/m3; Ceiling 0.002 mg/m3
• 稳定性/保质期：

  在常温常压下保持稳定，请避免光照、明火及高温环境。

计算性质

• 辛醇/水分配系数(LogP)：
  -0.38
• 重原子数：
  2
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

安全信息

• TSCA：
  Yes
• 危险等级：
  6.1
• 危险品运输编号：
  UN1557
• 包装等级：
  II
• 危险类别：
  6.1

SDS

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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

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Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title compound 12254-85-2 100% 0.5mg/m3 (as Cr) 0.5mg/m3 (as Cr)

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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

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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.

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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 and If involved in a fire, toxic arsine gas may be produced.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

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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.

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SECTION 7: Handling and Storage
Handling and Storage: Store material in a tightly sealed container. Keep away from heat and moisture.

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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.

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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

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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.

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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)

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SECTION 12: Ecological Information
Ecological Information: Very toxic to aquatic organisms. May cause long-term adverse effects in the aquatic environment.

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SECTION 13: Disposal Considerations
Disposal: Dispose of according to local, state and federal regulations.

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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

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SECTION 15: Regulatory Information
TSCA: Listed in the TSCA inventory.
SARA (Title 313): See Category Codes N020 and N090 for reporting.
Second Ingredient: none

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SECTION 16 - ADDITIONAL INFORMATION
N/A

制备方法与用途

生产方法： 在惰性气氛中加热铬与砷，可制得砷化铬。