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Ammonia or azane is a compound of nitrogen and hydrogen with the formula NH 3. It is a colourless gas with a characteristic pungent smell. Ammonia contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to food and fertilizers.mmonia is miscible with water. In an aqueous solution, it can be expelled by boiling. The aqueous solution of ammonia is basic. The maximum concentration of ammonia in water (a saturated solution) has a density of 0.880 g/cm 3 and is often known as '.880 ammonia'.
Phosphorus Trichloride [Phosphorus(III) Chloride] is a clear to slightly yellow oily liquid that fumes in moist air; specific gravity 1.57; melting at -112 C; boiling at 75.5 C. It is soluble in benzene, ether, carbon disulphide and in carbon tetrachloride.hosphoryl chloride, also called phosphorus oxychloride, contains the strong P=O solid bond. Phosphorus oxychloride is a colourless volatile liquid with a pungent odour; specific gravity 1.67; melting at 2 C; boiling at 105 C. The liquid reacts with water violently to produce hydrochloric and phosphoric acid.