From: Evaluation of modified cashew nutshell liquid as natural surfactants for chemical flooding in sandstone oil reservoirs
Physical property
Value
Specific gravity at 27℃
0.9 kg/m3
API gravity
22.5˚
Viscosity at 30.5℃
50.64 cP
Color
Dark brown
pH
6.2
Total acid number (TAN)
0.9 mgKOH/g