This chiral building block, also known as (R)-2-Phenyl-1-propylamine, presents as a colorless to very pale-yellow liquid. Keep container tightly closed. Store in a cool, dark and well-ventilated place, preferably locked up. (R)-(+)-beta-Methylphenethylamine is incompatible with oxidizing agents and acids. This combustible liquid is harmful if swallowed, in contact with skin or if inhaled. This chemical causes severe skin burns and eye damage.