Oragnoleptic properties

Specification

Appearance

Colorless and dark brawn viscous , clear liquid

Odour 

Pleasant and  ginger, earthy, odour

Solubility

Insoluble in water, soluble 1 vol. of solute in 3vol. of solvent (96%)

Physical Characteristic

Refractive index @ 20 ^oC

1.465 to 1.515

Specific gravity @ 25 ^oC

0.895  to 0.980

Optical rotation

-24.5 to +20.5

Acid value

NMT 2.00mgKOH/gm

Water content

0.20% Max

Residual solvent

Less than10 ppm

Chromatographic Analysis:%

A Zingiberin

0.5 to 4.5