Solubility: | SLIGHTLY SOL IN WATER, DIL SULFURIC ACID, & NITRIC ACID; SOLUBILITY IN DILUTE HYDROCHLORIC ACID WITH SOLUBILITY INCR WITH INCREASING CONCN OF HYDROCHLORIC ACID. SOL IN SOLN OF ALKALI HYDROXIDES OR SULFIDES, IN WARM SOLN OF TARTARIC ACID OR OF BITARTRATES. |