White Cutaneous Emulsion
White Embrocation
DEFINITION
White Liniment is a cutaneous emulsion.
| Oleic Acid | 85 mL |
| Turpentine Oil | 250 mL |
| Dilute Ammonia Solution | 45 mL |
| Ammonium Chloride | 12.5 g |
| Purified Water | 625 mL |
Extemporaneous preparation
The following directions apply.
Mix the Oleic Acid with the Turpentine Oil. Dilute the Dilute Ammonia Solution with 45 mL of the Purified Water, previously warmed, add to the oily solution and shake to form an emulsion. Separately dissolve the Ammonium Chloride in the remainder of the Purified Water, add to the emulsion and mix.
The liniment complies with the requirements stated under Liquids for Cutaneous Application and with the following requirements.
Content of volatile oil
24.5 to 27.5% v/w.
Refractive index
Of the oily liquid obtained in the Assay, 1.465 to 1.477, Appendix V E.
ASSAY
Acidify 100 g with 1M sulfuric acid using methyl orange solution as indicator, distil in steam and collect the distillate in a separating funnel; occasionally separate the aqueous portion of the distillate and return it to the flask. When all the volatile matter has been distilled, remove the aqueous portion of the distillate and measure the volume of the oily liquid.
