Physicochemical Properties of Milk

Physicochemical Properties of Milk

Milk: A whole, fresh, clean lacteal secretion obtained by complete milking of healthy animals.

SN	Properties	Cow Milk	Buffalo Milk
1	Acidity	0.13 to 0.14	0.14 to 0.15
2	pH	6.4 to 6.6	6.7 to 6.8
3	Specific Gravity (at 60°F)	1.028 to 1.030	1.030 to 1.032
4	Freezing Point	−0.547 °C	−0.549 °C
5	Boiling Point	100.17 °C	100.17 °C
6	Colour of Milk	Yellowish creamy white	Creamy white
7	Refractive Index	1.3440 to 1.3480 at 20°C	1.3440 to 1.3480 at 20°C
8	Specific Heat	0.938 cal. at 15°C, 0.930 cal. at 40°C and 0.920 cal. at 0°C
9	Viscosity	1.5 to 1.7 times more viscous than water (Water: 1.005 centipoises at 20°C)