Characters. - In dry white masses, without alkaline reaction, entirely soluble in rectified spirit, and giving out a powerful odour of valerian on the addition of dilute sulphuric acid.

Preparation. - By distilling amylic alcohol with a mixture of dilute sulphuric acid and an aqueous solution of bichromate of potassium: 2K2Cr2O7 + 8H2SO4 = 2(Cr2(SO4)3) + 2K2SO4 + 8H2O + 3O2; and C5H11HO + O2 = HC5H9O2 + H2O. The valerianic acid thus obtained is saturated with a solution of soda and dried : HC5H9O2 + NaHO = NaC5H9O2 + H2O.

Dose. - 1/2 to 5 grains.

Preparation in which Valerianate of Sodium is used.

Zinci Valerianas.

Use. - As an antispasmodic in hysteria. It is chiefly used for making the zinc salt.