Page "learned" Paragraph 83

Of several methods employed for tagging chlorine with radiochlorine, the exchange of inactive chlorine with tagged aluminum chloride at room temperature was found to be the most satisfactory.

To prepare the latter, silver chloride was precipitated from a solution containing Af obtained from the Oak Ridge National Laboratory.

The silver chloride was fused under vacuum in the presence of aluminum chips with the resultant product of Af which was sublimed into a flask on the vacuum line.

Previously purified chlorine was subsequently admitted and the exchange was allowed to take place.

The radiochlorine was stored at -78-degrees in a tube equipped with a break seal.