✦ LIBER ✦
Direct spectrophotometric assay of quaternary ammonium compounds using bromthymol blue
✍ Scribed by J. B. Lowry
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 205 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0022-3549
No coin nor oath required. For personal study only.
✦ Synopsis
Benzalkonium chloride, benzethonium chloride, and chlorhexidine gluconate were assayed quantitatively by a direct spectrophotometric method with bromthymol blue buffered at pH 7.5. The method shows good results at concentrations of 0--300 microgram/ml and in the presence of epinephrine bitartrate, phenylephrine hydrochloride, pilocarpine hydrochloride, and polyvinyl alcohol.