This napthol derivative, also known as (S)-(+)-ALPHA-TETRALOL, presents as a white to very pale yellow crystalline powder. Keep container tightly closed. Store in a cool and dark place, away from incompatibles. (S)-(+)-1,2,3,4-Tetrahydro-1-naphthol is harmful if swallowed and causes eye irritation. It is incompatible with oxidizing agents.