异戊烷

  性质 Properties Symbol Unit Value References
Basic Physical and Chemical Properties CAS注册号 CAS Registry Number CASRN / 78-78-4 Scifinder®
中文名称 Chemical Name / / Isopentane
异戊烷
Scifinder®
英文名称 English Name / / 2-MethylbutaneR 601A, iso-Pentane Scifinder®
组成 Composition / / /
分子式 Molecular Formula / / C5H12 Scifinder®
结构式 Structure Formula / / (CH3)2CHCH2CH3 Scifinder®
相对分子量 Molecular Weight MW / 72.15 Scifinder®
物理状态 Physical State / / liquid CRC Handbook of Chemistry and Physics(2010)
气味 Odor / / Pleasant Odor J.T.Baker MSDS
颜色 Color / / Colorless J.T.Baker MSDS
熔点 Melting Point mp -159.9
-159.77
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
沸点 Boiling Point bp 26.2±3.0
27.84
27.8
27.88
Scifinder®
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
James M calm Physical,safty,and environmental data for current and alternative refrigerants
CRC Handbook of Chemistry and Physics(2010)
饱和蒸汽压 Saturated Vapor Pressure(25℃) Psat MPa 0.0969
0.0917
0.091795
Scifinder®
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
液体密度 Liquid Density(25℃) dl g/cm3 0.647±0.06
0.616
0.620120
614.97
Scifinder®
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体密度 Vapor Density(25℃, 101.325kPa) dg kg/m3 2.7863 REFPROP 9.0
挥发性 Volatility / wt%
蒸发速度 Evaporation Rate(CCl4=1) / / 14-extremely?volatile?(Butyl?Acetate?=?1)) megaloid MSDS
Critical Properties 临界温度 Critical Temperature Tc 187.25
187.2
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
James M calm Physical,safty,and environmental data for current and alternative refrigerants
临界压力 Critical Pressure Pc MPa 3.380
3.38
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
James M calm Physical,safty,and environmental data for current and alternative refrigerants
临界体积 Critical Volume Vc cm3/mol 306.0 Thermophysical Properties of Chemicals and Hydrocarbons, 2008
临界密度 Critical Density ρc kg/m3 235.8 Thermophysical Properties of Chemicals and Hydrocarbons, 2008
临界压缩因子 Critical Compressibility Factor Zc / 0.270 Thermophysical Properties of Chemicals and Hydrocarbons, 2008
液体压缩因子 Liquid Compressibility Factor Z / 0.0043443 REFPROP 9.0
气体压缩因子 Vapor Compressibility Factor Z / 0.95885 REFPROP 9.0
偏心因子 Acentric Factor ω / 0.228 Thermophysical Properties of Chemicals and Hydrocarbons, 2008
Thermophysical Properties 液体焓 Liquid Enthalpy H kJ/kg -6.4556 REFPROP 9.0
气体焓 Vapor Enthalpy H kJ/kg 339.00 REFPROP 9.0
液体熵 Liquid Entropy S kJ/kg·K 3.609
-0.021498
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体熵 Vapor Entropy S kJ/kg·K 1.1372 REFPROP 9.0
生成焓 Enthalpy of Formation(25℃) ΔfHO kJ/mol -178.4 CRC Handbook of Chemistry and Physics(2010)
蒸发焓 Enthalpy of Vaporization ΔvH kJ/kg 1883.115
344.43
1788.8127
345.45
Scifinder®
CRC Handbook of Chemistry and Physics(2010)
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
REFPROP 9.0
液体等压热容 Liquid Isobaric Heat Capacity(25℃) Cp kJ/kg·K 2.284
2.2739
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体等压热容 Vapor Isobaric Heat Capacity(25℃) Cp kJ/kg·K 1.6964 REFPROP 9.0
液体等容热容 Liquid Isochoric heat capacity(25℃) Cv kJ/kg·K 1.7036 REFPROP 9.0
气体等容热容 Vapor Isochoric heat capacity(25℃) Cv kJ/kg·K 1.5549 REFPROP 9.0
Solubility 偶极矩 Dipole Moment μ D 0.13
0.13±0.05
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
解离常数 Dissociation Constant
清洗能力 KB
水中溶解度 Solubility in Water(23℃) / ppm wt/wt 61
48.5
Scifinder®
CRC Handbook of Chemistry and Physics(2010)
贝壳松脂丁醇值 Kauri-Butanol Value KB /
辛醇/水分配系数 Octanol/Water Partition Coefficient LogP / 3.099±0.179 Scifinder®
Hildabrand溶解度参数 Hildabrand Solubility Parameter δ cal/ml
Other Properties 液体焦耳-汤姆逊系数 Liquid Joule-Thomson Coefficient JT ℃/MPa -0.36042 REFPROP 9.0
气体焦耳-汤姆逊系数 Vapor Joule-Thomson Coefficient JT ℃/MPa 33.153 REFPROP 9.0
液体粘度 Liquid Viscosity(25℃) η mPa·s 0.214
0.21641
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体粘度 Vapor Viscosity(25℃) η mPa·s 0.0072573 REFPROP 9.0
液体导热系数 Liquid Thermal Conductivity(25℃) λ mW/m·K 111
107.34
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体导热系数 Vapor Thermal Conductivity(25℃) λ mW/m·K 14.992 REFPROP 9.0
液体介电常数 Liquid Dielectric Constant ε F/m 1.845
1.8270
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体介电常数 Gas Dielectric Constant ε F/m 1.0030 REFPROP 9.0
液体体积电阻系数 Liquid Volume Resistivity(1kHz) ρ Ω·cm
气体体积电阻系数 Gas Volume Resistivity(1kHz) ρ Ω·cm
表面张力 Surface Tension(25℃) γ mN/m 14.45
14.451
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
REFPROP 9.0
液体声速 Liquid Sound Velocity u m/s 960.48 REFPROP 9.0
气体声速 Vapor Sound Velocity u m/s 185.46 REFPROP 9.0
最低灭火浓度 Minimum Extinguishment Concentration MEC %
Atmospheric Effects 臭氧消耗潜能值 Ozone Depletion Potential ODP / 0 James M calm Physical,safty,and environmental data for current and alternative refrigerants
全球变暖潜能值 Global Warming Potential(100yr) GWP / ~20 James M calm Physical,safty,and environmental data for current and alternative refrigerantsJames M calm Physical,safty,and environmental data for current and alternative refrigerants
大气寿命 Atmospheric Life / yr 0.009 James M calm Physical,safty,and environmental data for current and alternative refrigerants
光化学臭氧合成潜能 photochemica lozone creation potential POCP /
全球温度潜势 global temperature change potential(100yr) GTP /
Flammability 闪点 Flash Point / -56.7
-51
<51
-51
Scifinder®
CRC Handbook of Chemistry and Physics(2010)
J.T.Baker MSDS
Megaloid MSDS
自燃点 Autoignition Point / 420
420
260
CRC Handbook of Chemistry and Physics(2010)
J.T.Baker MSDS
ScienceLab MSDS
燃烧下限 Lower Flammability Limit LFL %vol 1.3
1.4
1.3
CRC Handbook of Chemistry and Physics(2010)
J.T.Baker MSDS
ScienceLab MSDS
燃烧上限 Upper Flammability Limit UFL %vol 7.6
7.6
8.3
CRC Handbook of Chemistry and Physics(2010)
J.T.Baker MSDS
ScienceLab MSDS
燃烧热 Heat of Combustion HOC MJ/kg 35.0
48.57
James M calm Physical,safty,and environmental data for current and alternative refrigerants
CRC Handbook of Chemistry and Physics(2010)
最小点火能 Minimum Ignition Energy MIE mJ 0.70 张锐.新型替代制冷剂爆炸极限理论与实验研究
燃烧速度 Burning Velocity Su cm/s
可燃浓度限值 ASHRAE Flammable Concentration Limit FCL ppm v/v 3300 ASHRAE 34-2010
最大燃烧压力 Maximum Combustion Pressure 105Pa
最大燃烧压力上升速率 Maximum Rate of Pressure Increase During Combustion
Toxicity RTECS号 Registry of Toxic Effects of Chemical Substances® Number / / EK4430000 Sciencelab MSDS
接近致死浓度 Approximate Lethal Concentration ALC ppm v/v
半数致死浓度 Lethal Concentration 50% LC50 ppm v/v 434000 ASHRAE 34-2010
心脏致敏最低作用剂量 Cardiac Sensitization Lowest Observed Effect Level LOEL ppm v/v none ASHRAE 34-2010
心脏致敏最高无作用剂量 Cardiac Sensitization No Observed Effect Level NOEL ppm v/v none ASHRAE 34-2010
麻醉效应半数作用浓度 Anesthesia Effective Concentration 50% EC50 ppm v/v none ASHRAE 34-2010
麻醉效应最低作用剂量 Anesthesia Lowest Observed Effect Level LOEL ppm v/v 120000 ASHRAE 34-2010
麻醉效应最高无作用剂量 Anesthesia No Observed Effect Level NOEL ppm v/v none ASHRAE 34-2010
28天亚急性吸入毒性 28 Days Subacute Inhalation Toxicity NOEL ppm v/v
90天亚慢性吸入毒性 90 Days Subchronic Inhalation Toxicity NOEL ppm v/v
一年长期吸入毒性 Long Term Inhalation Toxicity (12 month) NOEL ppm v/v
两年长期吸入毒性 Long Term Inhalation Toxicity (24 month) NOEL ppm v/v
立即威胁生命和健康浓度 NIOSH Immediately Dangerous to Life or Health IDLH ppm v/v
缺氧限值 ASHRAE Oxygen Deprivation Limit ODL ppm v/v 140000 ASHRAE 34-2010
急性毒性暴露限值 ASHRAE Acute Toxicity Exposure Limit ATEL ppm v/v 1000 ASHRAE 34-2010
制冷剂浓度限值 ASHRAE Refrigerant Concentration Limit RCL ppm v/v 1000 ASHRAE 34-2010
职业接触限值 ASHRAE Occupational Exposure Limit OEL ppm v/v 600 James M calm Physical,safty,and environmental data for current and alternative refrigerants
时间加权平均阈限值 ACGIH Threshold Limit Value-Time-Weighted Average TLV-TWA ppm v/v 600 CRC Handbook of Chemistry and Physics(2010)
允许暴露水平 OSHA Permissible Exposure Level PEL ppm v/v 1000 J.T.Baker MSDS
工作环境暴露水平 AIHA Workplace Environmental Exposure Level WEEL ppm v/v
可接受暴露限值 Dupont Acceptable Exposure Limit AEL ppm v/v
ASHRAE安全等级 ASHRAE Safety Group / / A3 2009 ASHRAE Handbook-Fundamentals
嗅觉阈值 Odor Threshold / ppm v/v
大型水蚤半数作用浓度水生态毒性 Aquatic Toxicity of 48h Daphnia Magna Effective Concentration 50% EC50 mg/L 4.6 – 10.7 Refinery gases category analysis and hazard characterization
虹鳟鱼半数致死浓度水生态毒性 Aquatic Toxicity of 96h Rainbow Trout Lethal Concentration 50% LC50 mg/L 3.9 – 9.5 Refinery gases category analysis and hazard characterization
皮肤刺激或腐蚀
降解产物 Degradation Products carbon oxides Sciencelab MSDS