性质 Properties Symbol Unit Value References
Basic Physical and Chemical Properties CAS注册号 CAS Registry Number CASRN / 7732-18-5 Scifinder®
中文名称 Chemical Name / / Water
Scifinder®
英文名称 English Name / / Hydrogen oxide,R 718 Scifinder®
组成 Composition / / /
分子式 Molecular Formula / / H2O Scifinder®
结构式 Structure Formula / / H2O Scifinder®
相对分子量 Molecular Weight MW / 18.02
18.015
ScienceLab MSDS
CRC Handbook of Chemistry and Physics(2010)
物理状态 Physical State / / liquid ScienceLab MSDS
气味 Odor / / Colorless ScienceLab MSDS
颜色 Color / / Odorless ScienceLab MSDS
熔点 Melting Point mp 0
0
Scifinder®
Lange's Handbook of chemistry
沸点 Boiling Point bp 100
100
99.974
Scifinder®
ScienceLab MSDS
CRC Handbook of Chemistry and Physics(2010)
饱和蒸汽压 Saturated Vapor Pressure(25℃) Psat MPa 0.0031684
0.0031699
Lange's Handbook of chemistry
CRC Handbook of Chemistry and Physics(2010)
液体密度 Liquid Density(25℃) dl g/cm3 0.998
0.99704
0.9970
0.9970
Scifinder®
Lange's Handbook of chemistry
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体密度 Vapor Density(25℃, 101.325kPa) dg kg/m3 23.075 REFPROP 9.0
挥发性 Volatility / wt%
蒸发速度 Evaporation Rate(CCl4=1) / /
Critical Properties 临界温度 Critical Temperature Tc 373.98
373.99
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
临界压力 Critical Pressure Pc MPa 22.055
22.064
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
临界体积 Critical Volume Vc cm3/mol 55.95
56.042
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
临界密度 Critical Density ρc kg/m3 322
322
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
临界压缩因子 Critical Compressibility Factor Zc / 0.229 Thermophysical Properties of Chemicals and Hydrocarbons, 2008
液体压缩因子 Liquid Compressibility Factor Z / 0.000023106 REFPROP 9.0
气体压缩因子 Vapor Compressibility Factor Z / 0.99836 REFPROP 9.0
偏心因子 Acentric Factor ω / 0.3449 Thermophysical Properties of Chemicals and Hydrocarbons, 2008
Thermophysical Properties 液体焓 Liquid Enthalpy H kJ/kg 104.88
104.92
104.83
2009 ASHRAE Handbook-Fundamentals
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体焓 Vapor Enthalpy H kJ/kg 2546.58
2546.5
2009 ASHRAE Handbook-Fundamentals
REFPROP 9.0
液体熵 Liquid Entropy S kJ/kg·K 0.2039
0.36720
0.36722
2009 ASHRAE Handbook-Fundamentals
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体熵 Vapor Entropy S kJ/kg·K 4.756
3.403
8.5566
2009 ASHRAE Handbook-Fundamentals
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
生成焓 Enthalpy of Formation(25℃) ΔfHO kJ/mol -285.830±0.040 CRC Handbook of Chemistry and Physics(2010)
蒸发焓 Enthalpy of Vaporization ΔvH kJ/kg 734.207
2441.7
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 4.1813
4.1816
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 1.9118
1.9118
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
液体等容热容 Liquid Isochoric heat capacity(25℃) Cv kJ/kg·K 4.1376
4.1379
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体等容热容 Vapor Isochoric heat capacity(25℃) Cv kJ/kg·K 1.4405
1.4405
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
Solubility 偶极矩 Dipole Moment μ D 1.850
1.8546
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
解离常数 Dissociation Constant pKa=13.995 CRC Handbook of Chemistry and Physics(2010)
清洗能力 KB
水中溶解度 Solubility in Water(23℃) / ppm wt/wt
贝壳松脂丁醇值 Kauri-Butanol Value KB /
辛醇/水分配系数 Octanol/Water Partition Coefficient LogP /
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 -0.22147 REFPROP 9.0
气体焦耳-汤姆逊系数 Vapor Joule-Thomson Coefficient JT ℃/MPa 278.19 REFPROP 9.0
液体粘度 Liquid Viscosity(25℃) η mPa·s 0.8925
0.8903
0.89002
0.89004
2009 ASHRAE Handbook-Fundamentals
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体粘度 Vapor Viscosity(25℃) η mPa·s 0.00988
0.0097009
0.0097009
2009 ASHRAE Handbook-Fundamentals
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
液体导热系数 Liquid Thermal Conductivity(25℃) λ mW/m·K 607.19
607.15
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体导热系数 Vapor Thermal Conductivity(25℃) λ mW/m·K 18.550
18.550
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
液体介电常数 Liquid Dielectric Constant ε F/m 78.36(1kHz)
78.405
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体介电常数 Gas Dielectric Constant ε F/m 0(1kHz)
1.0003
CRC Handbook of Chemistry and Physics(2010)
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 71.968
72.14
72.71
71.99
2009 ASHRAE Handbook-Fundamentals
Lange's Handbook of chemistry
Thermophysical Properties of Chemicals and Hydrocarbons, 2008
CRC Handbook of Chemistry and Physics(2010)
液体声速 Liquid Sound Velocity u m/s 1496
1496.7
1496.5
2009 ASHRAE Handbook-Fundamentals
CRC Handbook of Chemistry and Physics(2010)
REFPROP 9.0
气体声速 Vapor Sound Velocity u m/s 426.53
426.63
426.63
2009 ASHRAE Handbook-Fundamentals
CRC Handbook of Chemistry and Physics(2010)
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 / <1 James M calm Physical,safty,and environmental data for current and alternative refrigerants
大气寿命 Atmospheric Life / yr
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 /
自燃点 Autoignition Point /
燃烧下限 Lower Flammability Limit LFL %vol
燃烧上限 Upper Flammability Limit UFL %vol
燃烧热 Heat of Combustion HOC MJ/kg
最小点火能 Minimum Ignition Energy MIE mJ
燃烧速度 Burning Velocity Su cm/s
可燃浓度限值 ASHRAE Flammable Concentration Limit FCL ppm v/v
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 / / ZC0110000 化学物质毒性数据库
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
心脏致敏最低作用剂量 Cardiac Sensitization Lowest Observed Effect Level LOEL ppm v/v
心脏致敏最高无作用剂量 Cardiac Sensitization No Observed Effect Level NOEL ppm v/v
麻醉效应半数作用浓度 Anesthesia Effective Concentration 50% EC50 ppm v/v
麻醉效应最低作用剂量 Anesthesia Lowest Observed Effect Level LOEL ppm v/v
麻醉效应最高无作用剂量 Anesthesia No Observed Effect Level NOEL ppm v/v
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
急性毒性暴露限值 ASHRAE Acute Toxicity Exposure Limit ATEL ppm v/v
制冷剂浓度限值 ASHRAE Refrigerant Concentration Limit RCL ppm v/v
职业接触限值 ASHRAE Occupational Exposure Limit OEL ppm v/v
时间加权平均阈限值 ACGIH Threshold Limit Value-Time-Weighted Average TLV-TWA ppm v/v
允许暴露水平 OSHA Permissible Exposure Level PEL ppm v/v
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 / / A1 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
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
皮肤刺激或腐蚀
降解产物 Degradation Products