ตำรายาของประเทศไทย
Thai Pharmacopoeia
สำนักยาและวัตถุเสพติด กรมวิทยาศาสตร์การแพทย์ กระทรวงสาธารณสุข
Bureau of Drug and Narcotic, Department of Medical Sciences, Ministry of Public HealthCategory Pharmaceutic aid (flavouring agent).
Lemon Spirit contains not less than 3.45 per cent w/v and not more than 4.60 per cent w/v of aldehydes, calculated as citral, C10H16O.
Lemon Spirit may be prepared as follow.
Terpeneless Lemon Oil 100 mL
Ethanol, sufficient to produce 1000 mL
Mix.
Packaging and storage Lemon Spirit shall be kept in tightly closed containers of glass or other suitable material and stored at a temperature not exceeding 25°.
Weight per millilitre 0.814 to 0.823 g (Appendix 4.9).
Ethanol content 84 to 88 per cent v/v (Method II, Appendix 6.5).
Assay Carry out the method for the “Determination of Aldehydes” (Appendix 7.9), using 10.0 mL of Lemon Spirit, 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 76.73 mg of C10H16O.
Other requirements Complies with the requirements described under “Spirits” (Appendix 1.16).