III.—To 1,750 parts of water add 250 parts of sulphuric acid, and when it has cooled down add 30 parts of potassium permanganate and let dissolve. Add this solution to 4,500 parts of benzine, stir well together, and set aside for 24 hours. Now decant the benzine and to it add a solution of 7 1/2 parts of potassium permanganate and 15 parts of sodium hydrate in 1,000 parts of water, and agitate the substances well together. Let stand until the benzine separates, then draw off.
IV.—Dissolve 3 parts of litharge and 18 parts of sodium hydrate in 40 parts of water. Add this to 200–250 parts of benzine and agitate well together for two minutes, then let settle and draw off the benzine. Rinse the latter by agitating {107} it with plenty of clear water, let settle, draw off the benzine, and, if necessary, repeat the operation.
BENZINE, CLEANING WITH: See Cleaning Preparations and Methods, under Miscellaneous Methods.
BENZOIC ACID IN FOOD: See Food.
BENZOIN SOAP: See Soap.
BENZOPARAL:
A neutral, bland, oily preparation of benzoin, useful for applying various antiseptics by the aid of an atomizer, nebulizer, or vaporizer. Can be used plain or in combination with other easily dissolved medicinals.
| Paraffine, liquid | 16 ounces |
| Gum benzoin | 1 ounce |
Digest on a sand bath for a half hour and filter.