Naphthols

• Naphthols and their derivatives are used in the manufacture of dyes; ß-naphthol methyl ether (yara-yara) and ß-naphthol ethyl ether (neroli oil) are used in cosmetics manufacture for the preparation of soap perfumes
• Cotton, rayon, and other celluosic fibers, as well as silk, can also be dyed with azoic or naphthol dyes. 
• Naphthol is sometimes also spelled as 'napthol' or 'naphtol'; the latter is the German spelling
• Since many of the components used in naphthol dyeing are known or suspected carcinogens, they should not be used in your kitchen