Wash. Rev. Code § 69.04.410
A drug or device shall be deemed to be adulterated (1) if it consists in whole or in part of any filthy, putrid, or decomposed substance; or (2) if it has been produced, prepared, packed, or held under insanitary conditions whereby it may have been contaminated with filth, or whereby it may have been rendered injurious to health; or (3) if it is a drug and its container is composed in whole or in part of any poisonous or deleterious substance which may render the contents injurious to health; or (4) if it is a drug and it bears or contains, for purposes of coloring only, a coal tar color other than one that is harmless and suitable for use in drugs for such purposes, as provided by regulations promulgated under section 504 of the federal act.
RCW 69.04.410