109-98-8

• 常用中文名：2-吡唑啉
• 常用英文名：4,5-Dihydro-1H-pyrazole
• CAS号：109-98-8
• 分子式：C₃H₆N₂
• 分子量：70.09310
• 发布时间：2018-08-17 20:25:30
• 更新时间：2024-01-05 20:32:16

• 主要用于制荧光增白剂，由它制得的各种荧光增白剂用于毛、丝和锦纶的增白，腈纶原浆着色以及分散染料、阳离子染料型腈纶的增白。吡唑啉的季铵盐用作除草剂。

名称

• 中文名: 2-吡唑啉
• 英文名: 2-Pyrazoline
• 中文别名: 2-吡唑烷
• 英文别名: 4,5-dihydro-1H-pyrazole; 2-PYRAZOLINE; EINECS 203-725-2; MFCD00009248

物化性质

• 密度: 1.02 g/cm3
• 沸点: 144ºC
• 分子式: C₃H₆N₂
• 分子量: 70.09310
• 精确质量: 70.05310
• PSA: 24.39000
• 储存条件: 室温
• 分子结构:

  五、分子性质数据：

  1、 摩尔折射率：19.92

  2、 摩尔体积（m³/mol）：60.8

  3、 等张比容（90.2K）：154.8

  4、 表面张力（dyne/cm）：41.8

  5、 极化率（10^-24cm³）：7.89

• 计算化学:

  1.疏水参数计算参考值（XlogP）:-0.2

  2.氢键供体数量:1

  3.氢键受体数量:2

  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24.4

  7.重原子数量:5

  8.表面电荷:0

  9.复杂度:48.9

  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：具有氨味的无色液体 。

  2. 密度（g/mL,17℃）：1.02

  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）：144

  6. 沸点（ºC, kPa）：未确定

  7. 折射率：1.4796

  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（mmHg, ºC）：未确定

  12. 饱和蒸气压（kPa,ºC）：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：溶于水及乙醇。

MSDS

Section I.Chemical Product and Company Identification Chemical Name 2-Pyrazoline Portland OR SynonymNot available. Chemical FormulaC3H6N2 CAS Number109-98-8 Section II.Composition and Information on Ingredients Chemical NameCAS Number Percent (%)TLV/PELToxicology Data 2-Pyrazoline109-98-8----- Not available.Not available. Section III. Hazards Identification Acute Health EffectsNo specific information is available in our data base regarding the toxic effects of this material for humans. However, exposure to any chemical should be kept to a minimum. Skin and eye contact may result in irritation. May be harmful if inhaled or ingested. Always follow safe industrial hygiene practices and wear proper protective equipment when handling this compound. CARCINOGENIC EFFECTS : Not available. Chronic Health Effects MUTAGENIC EFFECTS : Not available. TERATOGENIC EFFECTS : Not available. Toxicity to the reproductive system: Not available. There is no known effect from chronic exposure to this product. Repeated or prolonged exposure to this compound is not known to aggravate existing medical conditions. Section IV.First Aid Measures Eye ContactCheck for and remove any contact lenses. DO NOT use an eye ointment. Flush eyes with running water for a minimum of 15 minutes, occasionally lifting the upper and lower eyelids. Seek medical attention. Treat symptomatically and supportively. Skin Contact If the chemical gets spilled on a clothed portion of the body, remove the contaminated clothes as quickly as possible, protecting your own hands and body. Place the victim under a deluge shower. If the chemical touches the victim's exposed skin, such as the hands: Gently and thoroughly wash the contaminated skin with running water and non-abrasive soap. Be particularly careful to clean folds, crevices, creases and groin. Cover the irritated skin with an emollient. Seek medical attention. Treat symptomatically and supportively. Wash any contaminated clothing before reusing. InhalationIf the victim is not breathing, perform artificial respiration. Loosen tight clothing such as a collar, tie, belt or waistband. If breathing is difficult, oxygen can be administered. Seek medical attention. Treat symptomatically and supportively. IngestionRemove dentures if any. Have conscious person drink several glasses of water or milk. INDUCE VOMITING by sticking finger in throat. Lower the head so that the vomit will not reenter the mouth and throat. NEVER give an unconscious person anything to ingest. Seek medical attention. Treat symptomatically and supportively. Section V. Fire and Explosion Data Not available. FlammabilityCombustible.Auto-Ignition Flammable Limits Flash PointsNot available. Not available. Combustion ProductsThese products are toxic carbon oxides (CO, CO 2), nitrogen oxides (NO, NO2). Fire Hazards No specific information is available regarding the flammability of this compound in the presence of various materials. Explosion HazardsRisks of explosion of the product in presence of mechanical impact: Not available. Risks of explosion of the product in presence of static discharge: Not available. No additional information is available regarding the risks of explosion. Fire Fighting Media SMALL FIRE: Use DRY chemicals, CO 2, water spray or foam. and InstructionsLARGE FIRE: Use water spray, fog or foam. DO NOT use water jet. Continued on Next Page 109-98-8erra Section VI.Accidental Release Measures Spill CleanupCombustible material. InstructionsKeep away from heat and sources of ignition. Mechanical exhaust required. Stop leak if without risk. Absorb with an inert material and put the spilled material in an appropriate waste disposal. Finish cleaning the spill by rinsing any contaminated surfaces with copious amounts of water. Section VII. Handling and Storage Handling and StorageKeep away from heat and sources of ignition. Mechanical exhaust required. When not in use, tightly seal the container and store in a dry, cool place. Avoid excessive heat and light. Do not breathe gas, fumes, vapor or spray. In case of Information insufficient ventilation, wear suitable respiratory equipment. If you feel unwell, seek medical attention and show the label when possible. Treat symptomatically and supportively. Avoid contact with skin and eyes. Always store away from incompatible compounds such as oxidizing agents. Section VIII. Exposure Controls/Personal Protection Engineering ControlsProvide exhaust ventilation or other engineering controls to keep the airborne concentrations of vapors below their respective threshold limit value. Ensure that eyewash station and safety shower is proximal to the work-station location. Personal ProtectionSplash goggles. Lab coat. Vapor respirator. Boots. Gloves. A MSHA/NIOSH approved respirator must be used to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this product. Exposure LimitsNot available. Section IX. Physical and Chemical Properties Liquid.Solubility Physical state @ 20°CNot available. 1.02 Specific Gravity Molecular Weight70.09Partition CoefficientNot available. Boiling Point 144°C (291.2°F)Vapor PressureNot available. Melting PointNot available.Vapor DensityNot available. Refractive IndexNot available.VolatilityNot available. Critical TemperatureNot available.OdorNot available. ViscosityNot available.TasteNot available. Section X.Stability and Reactivity Data Stability This material is stable if stored under proper conditions. (See Section VII for instructions) Conditions of InstabilityAvoid excessive heat and light. Incompatibilities Slightly reactive to reactive with oxidizing agents. Section XI. Toxicological Information RTECS NumberNot available. Ingestion. Inhalation. Routes of Exposure Toxicity DataNot available. No additional remark. CARCINOGENIC EFFECTS : Not available. Chronic Toxic Effects MUTAGENIC EFFECTS : Not available. TERATOGENIC EFFECTS : Not available. Toxicity to the reproductive system: Not available. There is no known effect from chronic exposure to this product. Repeated or prolonged exposure to this compound is not known to aggravate existing medical conditions. Acute Toxic EffectsNo specific information is available in our data base regarding the toxic effects of this material for humans. However, exposure to any chemical should be kept to a minimum. Skin and eye contact may result in irritation. May be harmful if inhaled or ingested. Always follow safe industrial hygiene practices and wear proper protective equipment when handling this compound. Continued on Next Page 2-Pyrazoline Section XII.Ecological Information EcotoxicityNot available. Environmental FateNot available. Section XIII. Disposal Considerations Recycle to process, if possible. Consult your local or regional authorities. You may be able to dissolve or mix material with Waste Disposal a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber system. Observe all federal, state, and local regulations when disposing of this substance. Section XIV. Transport Information DOT ClassificationNot a DOT controlled material (United States). PIN NumberNONE Proper Shipping Name NONE Packing Group (PG)NONE DOT Pictograms Section XV. Other Regulatory Information and Pictograms TSCA Chemical InventoryThis product is NOT on the EPA Toxic Substances Control Act (TSCA) inventory. The following notices are required by 40 CFR 720.36 (C) for those products not on the inventory list: (EPA) (i) These products are supplied solely for use in research and development by or under the supervision of a technically qualified individual as defined in 40 CFR 720.0 et sec. (ii) The health risks of these products have not been fully determined. Any information that is or becomes available will be supplied on an MSDS sheet. WHMIS ClassificationNot controlled under WHMIS (Canada). (Canada) EINECS Number (EEC) Not available. EEC Risk StatementsNot controlled under DSCL (Europe). SECTION 16 - ADDITIONAL INFORMATION N/A

安全

• 风险声明 (欧洲): 10
• 安全声明 (欧洲): 16
• 危险品运输编码: UN 1993
• 海关编码: 2933199090

合成路线

288-13-1 ~% 109-98-8

文献：Thoms; Schnupp Justus Liebigs Annalen der Chemie, 1923 , vol. 434, p. 310

107-02-8 ~% 109-98-8

文献：Curtius; Wirsing Journal fuer Praktische Chemie (Leipzig), 1894 , vol. <2> 50, p. 551

186581-53-3 54509-73-8 ~% 109-98-8

文献：Azzarello Atti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali, Rendiconti, 1905 , vol. <5> 14 II, p. 285 Gazzetta Chimica Italiana, 1906 , vol. 36 I, p. 619

上下游产品

上游产品  4
288-13-1 107-02-8 186581-53-3 54509-73-8
下游产品  2
288-13-1 802982-86-1

制备

在温和的氧化条件下，可脱氢成吡唑。在催化热裂化下失去氮原子成环丙烷。在高压催化还原作用下，可制备1,3-丙二胺。由乙烷和重氮甲烷作用而制得。

海关

海关编码	2933199090
中文概述	2933199090. 其他结构上有非稠合吡唑环化合物. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0%
申报要素	品名, 成分含量, 用途, 乌洛托品请注明外观, 6－己内酰胺请注明外观, 签约日期
Summary	2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%