Syrup of Hydriodic Acid

Ingredients

• 13.6 g potassium iodide
• 1 g potassium hypophosphite
• 12.5 g tartaric acid
• 825 g sugar
• 15 cc water
• 25 cc diluted alcohol
• 275 cc water

Directions

1. Dissolve potassium iodide and potassium hypophosphite in 15 cc of water.

2. Dissolve tartaric acid in 25 cc of diluted alcohol.

3. Mix the two solutions in a vial, shake thoroughly, and place in ice water for 30 minutes, shaking occasionally.

4. Filter the mixture through a small, rapidly-acting white filter into a 76 cc graduated bottle.

5. Wash the bottle and filter with small portions of diluted alcohol, allowing each to drain.

6. Dilute the filtrate with 275 cc of water, add sugar, and dissolve by agitation without heat.