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Table 3 Physical properties of crude oil sample

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