Silver nitrate — Soluble in hot and cold water. Thallium and compounds Thallium — Insoluble in hot and cold water; soluble in nitric, sulfuric, and hydrochloric acids. Thallous oxide — Soluble in water, acids, and alcohols. Thallic oxide — Insoluble in hot or cold water; soluble in acids. Thallous acetate and thallic chloride — Soluble in cold water and alcohol. Thallous bromide and chloride — Slightly soluble in water. Thallous sulfate — Soluble in hot or cold water. Thallous sulfide — Soluble in cold water. Tungsten and compounds Tungsten — Insoluble in hot or cold water, hydrofluoric acid, and potassium hydroxide; soluble in mixtures of hydrofluoric and nitric acid; slightly soluble in sulfuric acid. Tungsten trioxide — Insoluble in hot or cold water and acids; soluble in hot alkalies and hydrofluoric acid. Tungstic acid — Insoluble in cold water and most acids; soluble in hot water, alkalies, hydrofluoric acid, and ammonia. Sodium tungstate — Soluble in hot and cold water; slightly soluble in ammonia; insoluble in acids and alcohol. Tungsten carbide — Insoluble in water; soluble in mixtures of hydrofluoric and nitric acid, and in aqua regia. Tungsten diboride — Insoluble in hot or cold water; soluble in aqua regia. Tungsten hexachloride — Soluble in hot water. Tungsten oxytetrachloride — Soluble in hot or cold water. Tungsten hexafluoride — Soluble in hot or cold water and alkalies. Tungsten disulfide — Insoluble in cold water and in alcohol; soluble in mixtures of hydrofluoric and nitric acid. Phosphotungstic acid — Soluble in cold water, alcohol, and ether. Ammonium paratungstate — Soluble in water; insoluble in alcohol. Uranium and compounds Uranium — Insoluble in hot or cold water, alcohol, and alkali. Uranium dioxide — Insoluble in hot or cold water; soluble in nitric acid and concentrated sulfuric acid. Triuranium octoxide — Insoluble in hot or cold water; soluble in nitric acid and sulfuric acid. Uranium tetrafluoride — Insoluble in cold water, dilute acids, and alkalies; soluble in concentrated acids and alkalies.
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