Report of the soap analysis committee-1940

Summary

Recommendations of the Committee are as follows:—

• 1) Pyrophosphate in soap — No recommendations for official action. Further studies to be undertaken.

• 2) Combined CO₂ in soap—Recommend tentative adoption of Evolution-Volumetric method. Retain present official absorption method (A.O. C.S.) as alternate.

• 3) Free alkali in potash soaps—Studies to be undertaken using isopropyl alcohol as solvent instead of ethyl alcohol.

• 4) McNicoll method for rosin in soap—Recommend official adoption of this method and deletion of present Wolff method.