• British Pharmacopoeia Volume IV
  • Appendices
  • Appendix I A. General Reagents

Potassium Chloride
scroll to previous hit
scroll to next hit

Potassium Chloride KCl  =  74.55 (7447-40-7)

Analytical reagent grade of commerce.

Potassium chloride used for infrared absorption spectrophotometry complies with the following requirement.

The infrared absorption spectrum , Appendix II A, of a disc 2  mm thick prepared from material previously dried at 250° for 1 hour has a substantially flat baseline over the range 4000 to 620  cm–1; it exhibits no maxima with an absorbance greater than 0.02 above the baseline with the exception of maxima due to water at 3440 and 1630  cm–1.