S 1185 (OTTO) Samarium(III) hydroxide, hydrate, 99% Cas 20403-06-9 - used as a chemical intermediate. S 1185 (OTTO) Samarium(III) hydroxide, hydrate, 99% Cas 20403-06-9 - used in the separation and preconcentration procedures for the determination of lead using spectrometric techniques. It has specialized uses in glass, phosphors, lasers, and thermoelectric devices and it is mainly applied in Neutron absorption.