二氧化钼 | 18868-43-4

• 物质功能分类: 无机化工 - 氧化物和过氧化物 - 金属氧化物
• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 过渡金属有机体
• 中文名称: 二氧化钼
• 中文别名: 氧化钼；二氧化钼(IV)
• 英文名称: Molybdenum dioxide
• 英文别名: dioxomolybdenum
• CAS: 18868-43-4
• 化学式: MoO₂
• 分子量: 127.95
• InChiKey: QXYJCZRRLLQGCR-UHFFFAOYSA-N

物化性质

• 熔点：
  decomposes [JAN85]
• 密度：
  6.47 g/mL at 25 °C (lit.)
• 溶解度：
  不溶于水、酸性溶液、碱性溶液
• 暴露限值：
  a/nm
• 物理描述：
  DryPowder
• 稳定性/保质期：

  在常温常压下稳定，需避免与氧化物、酸及空气接触。

  其具有变形的金红石结构，由无限延伸并在相反方向共边的MoO6八面体链构成；Mo—Mo键距沿链的方向交替变化，长键为0.310nm，短键为0.250nm。该物质呈现抗磁性和半导体性质，并含有金属-金属键。它具有金属光泽，是良好的电导体。不溶于水、盐酸、氢氟酸以及碱金属的氢氧化物和碳酸盐溶液。由于具有一定的碱性，可以部分溶解在硫酸中。

计算性质

• 辛醇/水分配系数(LogP)：
  -0.24
• 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：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

安全信息

• TSCA：
  Yes
• 危险品标志：
  Xn
• 安全说明：
  S26,S36
• 危险类别码：
  R20/21/22
• WGK Germany：
  1
• 海关编码：
  2825700000
• RTECS号：
  QA4688000

SDS

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Section 1: Product Identification
Chemical Name: Molybdenum (IV) oxide, 99%
CAS Registry Number: 18868-43-4
Formula: MoO2
EINECS Number: 242-637-7
Chemical Family: metal oxide
Synonym: Molybdenum dioxide, Molybdenous oxide.

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Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title Compound 18868-43-4 100% 10mg/m3 (as Mo- 15mg/m3

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Section 3: Hazards Identification
Emergency Overview: May be irritating to skin and eyes and respiratory tract.
Primary Routes of Exposure: Ingestion, inhalation
Eye Contact: May be a mild to severe irritant to the eyes.
Skin Contact: May cause slight to mild irritation of the skin.
Inhalation: Do not breath dust. Inhalation of powder may lead to irritation of the respiratory tract.
Ingestion: Ingestion may lead to vomiting and diarrhea.
Acute Health Affects: May be irritating to skin, eyes, mucous membranes and respiratory tract. Do not breath dust.
Chronic Health Affects: No information available on long-term chronic effects.
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
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: not applicable
Autoignition Temperature: none
Explosion Limits: none
Extinguishing Medium: None. Material is non-flammable.
Special Fire Fighting Procedures: Non-flammable. No special fire fighting procedures.
Hazardous Combustion and No hazardous combustion or decomposition products.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

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SECTION 6: Accidental Release Measures
Spill and Leak Procedures: Small spills can be mixed with vermiculite or sodium carbonate and swept up.

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SECTION 7: Handling and Storage
Handling and Storage: Store in a tightly sealed container.

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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 appropriate chemical resistant gloves and protective clothing.
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.

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SECTION 9: Physical and Chemical Properties
Color and Form: purple pwdr.
Molecular Weight: 127.95
Melting Point: no data
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: 6.47
Odor: none
Solubility in Water: insoluble

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SECTION 10: Stability and Reactivity
Stability: air and moisture stable solid
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: none
Incompatibility: none
Decomposition Products: none

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SECTION 11: Toxicological Information
RTECS Data: Subcutaneous (mouse); LD50:318 mg/kg.
Carcinogenic Effects: No data available
Mutagenic Effects: No data available
Tetratogenic Effects: No data available

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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): Title compound not listed.
Second Ingredient: none

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SECTION 16 - ADDITIONAL INFORMATION
N/A

制备方法与用途

用途

二氧化钼可用于制备二氧化钼溅射膜；此外，研究结果显示其具有优异的电学、光学和物理表面光洁度特性。这些特点使二氧化钼广泛应用于发光二极管（OLED）、液晶显示装置（LCD）、离子显示板（PDP）、场效应显示板（FED）、薄膜太阳能电池、低电阻欧姆触点材料以及其他电子材料和半导体材料。

制备

制取二氧化钼的方法通常包括用氢还原二钼酸铵或化学纯三氧化钼，或者用氢还原二钼酸铵与三氧化钼的混合物。此外，也有使用氢还原仲钼酸铵的情况，还原过程可以在回转炉中进行，也可以将二钼酸铵置于舟皿中，在多管炉中完成。

反应信息

• 作为反应物：
  描述：

  二氧化钼 生成 Cesium molybdate
  参考文献：
  名称：

  PULHAM, R. J.;RICHARDS, M. W.;EDWARDS, J., MATER. NUCL. REACTOR CORE APPL.: PROC. INT. CONF., BRISTOL, 27-29 OCT., 1+

  摘要：

  DOI：
• 作为产物：
  描述：

  三氧化钼 生成 二氧化钼
  参考文献：
  名称：

  ZEKEL, ZH. A.;KRASNOBAEVA, N. B.;SHPIRT, M. YA., BCEC. SIMP. ZHROBL. KATAL. V UGLEXIMII, 21-27MAYA, 1990: TEZ. DOKL., DONE+

  摘要：

  DOI：
• 作为试剂：
  描述：

  3-甲基-2-丁烯醛 、 Magnesiumoxide 、 丙酮 在 二氧化钼 、 Zinc Oxide 作用下， 180.0 ℃ 、405.27 MPa 条件下， 反应 3.0h， 以27 Parts of 2-methyl-2,4-heptadien-6-one is obtained which的产率得到6-甲基-3,5-庚二烯-2-酮
  参考文献：
  名称：

  Production of .alpha.,.beta.-unsaturated ketones

  摘要：

  一种制备.alpha.,.beta.-不饱和酮的方法，包括在液相中存在锌氧化物催化剂的条件下，通过醛和酮的反应进行。所得的酮在某些情况下适用作溶剂，在某些情况下适用作有价值的香料、染料、塑料和特别是天然物质的中间体。

  公开号：

  US04005147A1

文献信息

• BERG, LLOYD
  作者：BERG, LLOYD

  DOI：——

  日期：——
• NOGITA, SHUNSUKE;MIYAMOTO, TOMOHIKO;KOYAMA, SHUNTARO, INT. CONF. COAL SCI., TOKYO, OCT. 23-27, 1989, SAN JOSE (CALIF.),(1989) C+
  作者：NOGITA, SHUNSUKE、MIYAMOTO, TOMOHIKO、KOYAMA, SHUNTARO

  DOI：——

  日期：——
• KATO, SIGEHRU;ROKUGAVA, NOBUNORI
  作者：KATO, SIGEHRU、ROKUGAVA, NOBUNORI

  DOI：——

  日期：——
• HOFMANN, H.;MICHEL, B.;GAUCKLER, L. J.;ALLEMANN, J., CERAM. POWDER SCI. III: PROC. 3RD INT. CONF. POWDER PROCESS. SCI., SAN DI+
  作者：HOFMANN, H.、MICHEL, B.、GAUCKLER, L. J.、ALLEMANN, J.

  DOI：——

  日期：——
• TSUTIYA, MITSURU
  作者：TSUTIYA, MITSURU

  DOI：——

  日期：——

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