Peppermint Oil Blends : PROTOCOL (IP/EP) STANDARDS Description : Colourless & clear liquid. Odour : Characteristic Odour. Optical Rotation -160 To -340 (AT 250C) Specific Gravity : 0.888 To 0.910 gm/ml (AT 250C) Refractive Index : 1.456 To 1.470 (AT 250C) Assay By Glc Limonene : 1.50% To 7.00% Cineole : Max.1.50% Menthone : 17.00% To 35.00% Iso-Menthone : 5.00% To 13.00% Menthyl Acetate : 1.50% To 7.00% Iso-Pulegole : 1.00% To 3.00% L-Menthol : 30.00% To 50.00% Pulegone : Max. 2.50% Piperitone : Max. 2.00%
