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Fluid Viscosities

The values identified below are for dynamic viscosity as measured using centiPoise (cP) and SI units N.s m -2. = Pa. s
1 Centipoise = 1 mPa s (milliPascal Second)= 10 -3 Pa.s
1 Pa.s = 1000 centiPoise

Table of dynamic gas viscosity values in cP at room temperatures (20 deg C) and atmospheric pressure


FluidDynamic
viscosity
cP(Centipoise)
Acetylene0,00935
Ammonia0,00918
Argon0,021
Carbon Dioxide0,014
Carbon Monoxide0,0166
Chlorine0,0129
Cyanogen0,00928
Ethylene0,0097
Helium0,0186
Hydrogen0,00835
Hydrogen Chloride0,0138
Hydrogen Sulphide0,0117
Methane0,0103
Nitric Oxide0,0178
Nitrous Oxide0,0135
Oxygen0,0192
Sulphur Dioxide0,0117




Dynamic viscosities (Pa.s) of various gases at different temperatures at atmospheric pressure

Example value Air (0 deg C) dynamic viscosity = 17 X 10 -6 Pa.s = 0,017 cPoise

GasSymbolTemperature (Deg. C)
0100250500
Viscosity Pa s ( Actual x 106 )
OxygenO219243039
HeliumHe18222837
Air-17212735
NitrogenN216,52126535
Carbon MonoxideCO16,5212635
Carbon DioxideCO213,7182434
Sulphur DioxideSO211.8152028
AmmoniaNH39,5131827
HydrogenH28510,512,516,5
EthaneC2H68,511,515,522,5
PropaneC3H87,71013,218
ButaneC4H20810,514,220



Dynamic Viscosities of Various liquids at room Temperature (20 degres C)


FluidDynamic
viscosity
cP(Centipoise)
Acetic Acid1,219
Acetone0,324
Benzene0,647
Bromine0.993
Carbon Disulphide0,375
Carbon Tetrachloride0.972
Chloroform0,569
Glycerol1495
Mercury Hg1,552
Methyl Alcohol0,594
Nitrobenzene2,03
Olive Oil84000
Lubricating Oil799,4
Paraffin Oil1000
Phenol12,74
Toluene0,585
Turpentine1,49
Water1


Dynamic Viscosities (Pa.s) of Various Liquids at different temperatures


Example value Water (20 deg C) dynamic viscosity = 0,001 Pa.s = 1 cPoise

Liquid..........Chemical
symbol
Temperature (Deg. C)
-2502050100200
Viscosity centiPoise (cP) (val's x 10-3 = Pa.s )
WaterH20-1,79181,00280,54710,28170,1346
Light Machinery Oil----284,9-
Spindle Oil---135,492,0-
EthanolC2H5OH3,2411,7861,2010,7010,326-
MethanolCH3OH-0,8170,5840,396--
BenzeneC6H6--0,6490,4360,2610,113
TolueneC7H8-0,7730,5860,4190,2690,133
Sulphur DioxideSO2-0,3680,3040,234--
AmmoniaNH30,2150,1690,1380,103--
Freon 113-1,40.920,750,50,29-
Fuel Oil (sg=0.94)---1000100112,5
Crude Oil (sg = 0,855)--167,542,51,5
Kerosene--3,72,51,40,6-
Sulphuric Acid (100%) 90362510,53,4-
Sulphuric Acid (60%) 16963,51,5-
Nitric Acid (95%) 2,11,51,20,850,50-
Nitric Acid (60%) 6,03,52,51,40,7-
Mercury 21,601,551,51,451,1