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Category  Pharmaceutic aid.

        Terpeneless Orange Oil may be prepared by concentrating Orange Oil under reduced pressure until most of the terpenes have been removed or by solvent partition.  It contains not less than 18 per cent w/w of aldehydes, calculated as decanal, C₁₀H₂₀O.

Description  Clear, yellow or orange yellow, liquid, visibly free from water.

Packaging and storage  Terpeneless Orange Oil shall be kept in well-filled, tightly closed containers, protected from light, and stored at a temperature not exceeding   25°.

Solubility test  Soluble, at 20°, in 1 volume of ethanol (90 per cent).

Weight per millilitre  0.855 to 0.880 g (Appendix 4.9).

Refractive index  1.461 to 1.473, at 20º (Appendix 4.7).

Optical rotation  Not more than +60° (Appendix 4.8).

Assay  Carry out the method for the “Determination of Aldehydes” (Appendix 7.9), using 1.5 g, omitting the toluene, and using a volume, not less than 7 mL, of hydroxylamine in ethanol (60 per cent) TS that exceeds by 1 to 2 mL the volume of 0.5 M potassium hydroxide in ethanol (60 per cent) VS required.  Each mL of 0.5 M potassium hydroxide in ethanol (60 per cent) VS is equivalent to 78.76 mg of C₁₀H₂₀O.