Note 45 — Chapter X · SODIUM CHLORIDE—BERTHOLLET'S LAWS—HYDROCHLORIC ACID
George Kamensky translation
The solubility of sal-ammoniac in 100 parts of water (according to Alluard) is—
0° 10° 20° 30° 40° 60° 80° 100° 100°
28·40 32·48 37·28 41·72 46 55 64 73 77
A saturated solution boils at 115°·8. The specific gravity at 15°/4° of solutions of sal-ammoniac (water 4° = 10,000) = 9,991·6 - 31·26p - 0·085p2, where p is the amount by weight of ammonium chloride in 100 parts of solution. With the majority of salts the differential ds/dp increases, but here it decreases with the increase of p. For (unlike the sodium and potassium salts) a solution of the alkali plus a solution of acid occupy a greater volume than that of the resultant ammonium salt. In the solution of solid ammonium chloride a contraction, and not expansion, generally takes place. It may further be remarked that solutions of sal-ammoniac have an acid reaction even when prepared from the salt remaining after prolonged washing of the sublimed salt with water (A. Stcherbakoff).