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.