- British Pharmacopoeia Volume IV
- Herbal Drugs, Herbal Drug Preparations and Herbal Medicinal Products
Compound Benzoin Tincture |
Friars' Balsam
Barbados Aloes or Cape Aloes |
20 g |
Prepared storax of commerce |
100 g |
Sumatra Benzoin crushed |
100 g |
Ethanol (90 per cent) |
Sufficient to produce 1000 mL |
The following directions apply.
Macerate the Barbados Aloes or Cape Aloes, the prepared storax and the Sumatra Benzoin with 800 mL of Ethanol (90 per cent) in a closed vessel for not less than 2 days, shaking occasionally, filter and pass sufficient Ethanol (90 per cent) through the filter to produce 1000 mL.
The tincture complies with the requirements for Tinctures stated under Extracts and with the following requirements.
Not less than 4.5% w/v, calculated as cinnamic acid, C9H8O2.
70 to 76% v/v, Appendix VIII F, Method III.
15 to 19% w/v.
0.880 to 0.910, Appendix V G.
Carry out the Assay described under Benzoin Inhalation using 10 mL of the tincture. Each mL of 0.1m sodium hydroxide VS is equivalent to 14.82 mg of total balsamic acids, calculated as cinnamic acid, C9H8O2.