Ammonia R1, Concentrated

Content: minimum 30.0 per cent m/m of NH₃ (17.03).

A clear, colourless liquid.

: less than 0.892.

Assay. Weigh accurately a ground-glass-stoppered flask containing 50.0 mL of 1 M hydrochloric acid. Introduce 2 mL of concentrated ammonia R1 and weigh again. Titrate the solution with 1 M sodium hydroxide, using 0.5 mL of methyl red mixed solution R as indicator.

1 mL of 1 M hydrochloric acid is equivalent to 17.03 mg of NH₃.

Storage Protected from atmospheric carbon dioxide, at a temperature below 20 °C.