12034-77-4

• 常用中文名：硒化铌(IV)
• 常用英文名：Niobium(IV) selenide
• CAS号：12034-77-4
• 分子式：NbSe₂
• 分子量：252.84200
• 相关类别： 无机化工 无机盐 硫族化合物
• 发布时间：2018-02-11 08:00:00
• 更新时间：2024-01-08 11:52:52
• 下载msds

名称

• 中文名: 硒化铌(IV)
• 英文名: Niobium Selenide
• 中文别名: 硒化铌
• 英文别名: Niobium(IV) selenide; Niobium(IV) selenide (metals basis); Niobium diselenide; Niobium selenide; EINECS 234-811-8; MFCD00016228; COLUMBIUM SELENIDE

物化性质

• 密度: 1.016 g/mL at 25 °C(lit.)
• 沸点: 243-244 °C(lit.)
• 熔点: >1316℃[HAW93]
• 分子式: NbSe₂
• 分子量: 252.84200
• 闪点: >230 °F
• 精确质量: 254.75500
• 外观性状: 粉末
• 折射率: n20/D 1.535(lit.)
• 储存条件:

  常温密闭，阴凉通风干燥

• 稳定性:

  常温常压下稳定

  避免的物料 碱 氧化物。已知铌的硒化物存在多种物相，研究得最充分的当属NbSe2和NbSe3。该物相实属非整比化合物Nb1+xSe2,结构类似于NbS2，Nb以三角棱柱体配位方式存在于结构中。

• 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:18.3

  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：具有金属光泽的蓝灰色粉末。晶体为六方层状结构。

  2. 密度（g/mL,25℃）：6.3

  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：未确定

MSDS

Section1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE Product identifiers : Niobium diselenide, ≥99.9% trace metals basis Product name CAS-No.: 12034-77-4 Relevant identified uses of the substance or mixture and uses advised against Identified uses: Laboratory chemicals, Manufacture of substances Section2. HAZARDS IDENTIFICATION Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 [EU-GHS/CLP] Acute toxicity, Oral (Category 3) Acute toxicity, Inhalation (Category 3) Specific target organ toxicity - repeated exposure (Category 2) Acute aquatic toxicity (Category 1) Chronic aquatic toxicity (Category 1) Classification according to EU Directives 67/548/EEC or 1999/45/EC Toxic by inhalation and if swallowed. Danger of cumulative effects. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Label elements Labelling according Regulation (EC) No 1272/2008 [CLP] Pictogram Signal wordDanger Hazard statement(s) H301 + H331Toxic if swallowed or if inhaled H373May cause damage to organs through prolonged or repeated exposure. H410Very toxic to aquatic life with long lasting effects. Precautionary statement(s) P261Avoid breathing dust. P273Avoid release to the environment. P301 + P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/ physician. P311Call a POISON CENTER or doctor/ physician. P501Dispose of contents/ container to an approved waste disposal plant. Supplemental Hazardnone Statements According to European Directive 67/548/EEC as amended. Hazard symbol(s) R-phrase(s) R23/25Toxic by inhalation and if swallowed. R33Danger of cumulative effects. R50/53Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. S-phrase(s) S20/21When using do not eat, drink or smoke. S28After contact with skin, wash immediately with plenty of soap and water. S45In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). S60This material and its container must be disposed of as hazardous waste. S61Avoid release to the environment. Refer to special instructions/ Safety data sheets. Other hazards - none Section3. COMPOSITION/INFORMATION ON INGREDIENTS Substances Synonyms: Niobium selenide Formula: NbSe2 Molecular Weight: 250,83 g/mol ComponentConcentration Niobium diselenide, ≥99.9% trace metals basis CAS-No.12034-77-4- Section4. FIRST AID MEASURES Description of first aid measures General advice Consult a physician. Show this safety data sheet to the doctor in attendance. If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Take victim immediately to hospital. Consult a physician. In case of eye contact Flush eyes with water as a precaution. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. Most important symptoms and effects, both acute and delayed To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Indication of any immediate medical attention and special treatment needed no data available Section5. FIREFIGHTING MEASURES Extinguishing media Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special hazards arising from the substance or mixture Selenium/selenium oxides, niobium oxides Advice for firefighters Wear self contained breathing apparatus for fire fighting if necessary. Further information no data available Section6. ACCIDENTAL RELEASE MEASURES Personal precautions, protective equipment and emergency procedures Wear respiratory protection. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. Environmental precautions Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Methods and materials for containment and cleaning up Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal. Reference to other sections For disposal see section 13. Section7. HANDLING AND STORAGE Precautions for safe handling Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed. Conditions for safe storage, including any incompatibilities Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Specific end uses no data available Section8. EXPOSURE CONTROLS/PERSONAL PROTECTION Control parameters Components with workplace control parameters Exposure controls Appropriate engineering controls Avoid contact with skin, eyes and clothing. Wash hands before breaks and immediately after handling the product. Personal protective equipment Eye/face protection Face shield and safety glasses Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Body Protection Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Respiratory protection Where risk assessment shows air-purifying respirators are appropriate use a full-face particle respirator type N99 (US) or type P2 (EN 143) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Section9. PHYSICAL AND CHEMICAL PROPERTIES Information on basic physical and chemical properties a) AppearanceForm: solid b) Odourno data available c) Odour Thresholdno data available d) pHno data available e) Melting point/freezing> 1.316 °C point f) Initial boiling point and no data available boiling range g) Flash pointno data available h) Evaporation rateno data available i) Flammability (solid, gas) no data available j) Upper/lowerno data available flammability or explosive limits k) Vapour pressureno data available l) Vapour densityno data available m) Relative density6,3 g/cm3 n) Water solubilityno data available o) Partition coefficient: n- no data available octanol/water p) Autoignitionno data available temperature q) Decompositionno data available temperature r) Viscosityno data available s) Explosive propertiesno data available t) Oxidizing propertiesno data available Other safety information no data available Section10. STABILITY AND REACTIVITY Reactivity no data available Chemical stability no data available Possibility of hazardous reactions no data available Conditions to avoid no data available Incompatible materials Strong oxidizing agents Hazardous decomposition products Other decomposition products - no data available Section11. TOXICOLOGICAL INFORMATION Information on toxicological effects Acute toxicity no data available Skin corrosion/irritation no data available Serious eye damage/eye irritation no data available Respiratory or skin sensitization no data available Germ cell mutagenicity no data available Carcinogenicity 3 - Group 3: Not classifiable as to its carcinogenicity to humans (Niobium diselenide, ≥99.9% IARC: trace metals basis) Reproductive toxicity no data available Specific target organ toxicity - single exposure no data available Specific target organ toxicity - repeated exposure May cause damage to organs through prolonged or repeated exposure. Aspiration hazard no data available Potential health effects InhalationToxic if inhaled. May cause respiratory tract irritation. IngestionToxic if swallowed. SkinHarmful if absorbed through skin. May cause skin irritation. EyesMay cause eye irritation. Signs and Symptoms of Exposure To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Additional Information RTECS: Not available Section12. ECOLOGICAL INFORMATION Toxicity no data available Persistence and degradability no data available Bioaccumulative potential no data available Mobility in soil no data available Results of PBT and vPvB assessment no data available Other adverse effects Very toxic to aquatic life. Section13. DISPOSAL CONSIDERATIONS Waste treatment methods Product Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. Offer surplus and non-recyclable solutions to a licensed disposal company. Contaminated packaging Dispose of as unused product. Section14. TRANSPORT INFORMATION UN number ADR/RID: 3283IMDG: 3283IATA: 3283 UN proper shipping name ADR/RID: SELENIUM COMPOUND, SOLID, N.O.S. (Niobium diselenide, ≥99.9% trace metals basis) SELENIUM COMPOUND, SOLID, N.O.S. (Niobium diselenide, ≥99.9% trace metals basis) IMDG: Selenium compound, solid, n.o.s. (Niobium diselenide, ≥99.9% trace metals basis) IATA: Transport hazard class(es) ADR/RID: 6.1IMDG: 6.1IATA: 6.1 Packaging group ADR/RID: IIIIMDG: IIIIATA: III Environmental hazards ADR/RID: noIMDG Marine pollutant: yesIATA: no Special precautions for user no data available Section15. REGULATORY INFORMATION This safety datasheet complies with the requirements of Regulation (EC) No. 1907/2006. Safety, health and environmental regulations/legislation specific for the substance or mixture no data available Chemical Safety Assessment no data available Section16. OTHER INFORMATION Further information Copyright 2012 Co. LLC. License granted to make unlimited paper copies for internal use only. The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. Corporation and its Affiliates shall not be held liable for any damage resulting from handling or from contact with the above product. See and/or the reverse side of invoice or packing slip for additional terms and conditions of sale.

毒性和生态

生态学数据: 通常对水体是极其有害的，即使小量产品也不能接触地下水，水道或污水系统

安全

• 符号: GHS06, GHS08, GHS09
• 信号词: Danger
• 危害声明: H301 + H331-H373-H410
• 警示性声明: Missing Phrase - N15.00950417-P260-P304 + P340 + P312-P403 + P233
• 危害码 (欧洲): T,N
• 风险声明 (欧洲): 23/25-33-50/53
• 安全声明 (欧洲): 20/21-28-45-60-61
• 危险品运输编码: UN3283
• RTECS号: QU0420000
• 包装等级: III
• 危险类别: 6.1

制备

在一密封石英管中，将两种单质混合物加热至600℃。在90000atm(1atm=101.325kPa)和1350℃下可由单质制得其高压型态的NbSe2。