硒化钼 | 12058-18-3

• 物质功能分类: 无机化工 - 无机盐 - 硫族化合物
• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 中文名称: 硒化钼
• 中文别名: 硒化钼(IV)；二硒化钼
• CAS: 12058-18-3
• 化学式: MoSe2
• 分子量: 253.9
• InChiKey: MHWZQNGIEIYAQJ-UHFFFAOYSA-N

物化性质

• 熔点：
  >1200°C
• 密度：
  6.9 g/cm3
• 暴露限值：
  ACGIH: TWA 10 mg/m3; TWA 3 mg/m3; TWA 0.2 mg/m3NIOSH: IDLH 5000 mg/m3; IDLH 1 mg/m3; TWA 0.2 mg/m3
• 稳定性/保质期：
  在常温常压下，硒化钼（MoSe₂）稳定存在。请避免其接触光、明火和高温环境。硒化钼（MoSe₂）是一种灰色粉末，具备层状结构，并表现出半导体性质。

计算性质

• 辛醇/水分配系数(LogP)：
  -0.76
• 重原子数：
  3
• 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
• 危险品标志：
  N,T
• 安全说明：
  S20/21,S28,S45,S60,S61
• 危险类别码：
  R33,R50/53,R23/25
• WGK Germany：
  3
• 危险品运输编号：
  UN3283
• 包装等级：
  III
• 危险类别：
  6.1

SDS

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Section 1: Product Identification
Chemical Name: Molybdenum (IV) selenide (99.9%-Mo)
CAS Registry Number: 12058-18-3
Formula: MoSe2
EINECS Number: 235-027-9
Chemical Family: metal chalcogenides
Synonym: Molybdenum diselenide

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Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title compound 12058-18-3 100% 10mg/m3( as Mo) 15mg/m3 (as Mo)

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Section 3: Hazards Identification
Exposure to selenium containing dusts can cause shortness of breath, garlic odor, chills and headache.
Emergency Overview:
Chronic exposure may result in nervous disorders, dermatitis, liver and kidney disease.
Primary Routes of Exposure: Ingestion, inhalation.
Eye Contact: May cause mild to moderate irritation of the eyes.
Skin Contact: May cause irritation of the skin, and upon repeated contact, dermatitis.
Inhalation: Dust may cause garlic odor, shortness of breath, chills, headache, and delayed pulmonary edema.
Ingestion: Ingestion may lead to nausea, vomiting, bloody diarrhea, weakness and chronic diseases.
May be irritating to skin, eyes, and respiratory tract and cause nausea, vomiting, bloody diarrhea, weakness,
Acute Health Affects:
chills, headache, and delayed pulmonary edema.
Prolonged exposure to selenium compounds may cause dermatitis, diarrhea, liver damage, nervous disorders,
Chronic Health Affects:
lameness and loss of vitality.
NTP: No
IARC: No
OSHA: No

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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 in
Inhalation:
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 involved in a fire, fire fighters should be equipped with NIOSH approved positive pressure self-contained
Special Fire Fighting Procedures:
breathing apparatus and full protective clothing.
Hazardous Combustion and If involved in a fire this material may emit toxic fumes of hydrogen selenide.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazard.

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SECTION 6: Accidental Release Measures
Small spills can be mixed with vermiculite, sodium carbonate or other suitable non combustible adsorbent and
Spill and Leak Procedures:
swept up.

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SECTION 7: Handling and Storage
Handling and Storage: No special precautions needed in handling and storage..

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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. Consult with glove manufacturer to determine the proper type of glove.
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 Respiratory
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.

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SECTION 9: Physical and Chemical Properties
Color and Form: -325 mesh gray powder
Molecular Weight: 253.87
Melting Point: >1200°
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: 6
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: Mineral acids may form toxic hydrogen selenide vapors
Incompatibility: mineral acids
Decomposition Products: selenium oxide and molybdenum oxide

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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

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SECTION 12: Ecological Information
Ecological Information: No information available

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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): 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

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SECTION 15: Regulatory Information
TSCA: Listed in the TSCA inventory.
SARA (Title 313): See category Code N725 for reporting.
Second Ingredient: none

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SECTION 16 - ADDITIONAL INFORMATION
N/A

制备方法与用途

二硒化钼简介

二硒化钼是一种无机化合物，化学式为MoSe₂。这类化合物属于过渡金属二硫属化物（TMDC），即由过渡金属与元素周期表第16族的元素形成的化合物。相比于MoS₂，二硒化钼表现出更好的导电性。

生产方法

将钼(Mo)与硒(Se)按摩尔比1∶2混合，在800～1150℃温度下进行反应，主要形成MoSe₂。

用途

单晶二硒化钼（MoSe₂）是通过机械剥离或液相剥离获得单层或多层MoSe₂的优质来源。此外，单晶也可以直接用于光学和扫描探针显微镜研究（如AFM和TEM研究）。