Grade designation

Specific gravity at 270/270C

Optical rotation

Refractive index at 270C**

ACID VALUE MAXIMUM

Ester value

Ester (Saponification) Value after acetylation

Total Alcohol percentage (Geraniol) content by mass

Solubility in 70% (by volume) Ethyl alcohol

1

2

3

4

5

6

7

8

9

Grade-I

0.898 to 0.927

(-) 140 to (+)540

1.4752 to

1.4902

1.4752 to 1.4902

6

13.5 to 34 (5 to12

percent of esters as geranyl acetate)

140 to 180

36 to 60

Soluble in 2 to 3 volumes

 

Description and appearance 

  • Indian ginger grass oil is the brownish  yellow to brownish red essential oil obtained by steam or water distillation of partially dried leaves, flowers and upper third of stems, after flowering of Cymbopogan martini stapf. Var Sofia. The oil shall be clear and free from separated water. It shall also be free from sediments, suspended matter and shall posses the characteristic sharp but pleasant odour