ledum camphor

[LEDUM-OIL.] ledum-oil, s. Chem.: An oil obtained by distilling the leaves of the marsh wild rosemary ( Ledum palustre). It is a yellowish, viscid oil, lighter than water, and po e ing a pungent odor. When exposed to the air, it gradually solidifies to a crystalline ma , insoluble in water, but soluble in alcohol and ether. It appears to be a mixture of a volatile oil and a solidified oil (Ledum-camphor). The analysis of Ledum-camphor leads to the formula C28H48O.