With beta-naphthol, gives With alpha-naphthol, gives.    From Wordnik.com.  [The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student] Reference

Primuline and 20 lb. salt, then diazotise and develop with alpha-naphthol.    From Wordnik.com.  [The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student] Reference

They are also called naphthol colours from the use of beta-and alpha-naphthol in their production.    From Wordnik.com.  [The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student] Reference

Practically the only phenol that is used is the beta-naphthol; alpha-naphthol is occasionally used, but not often.    From Wordnik.com.  [The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student] Reference

This assay has been successfully applied to substrates as small as alpha-naphthol and as big as proteoglycans.    From Wordnik.com.  [BioMed Central - Latest articles] Reference