… Chemical preparations for photographic uses (other than varnishes, glues, adhesives and similar preparations); unmixed products for photographic uses, put up in measured portions or put up for …
Explanatory notes
… 37.07 - Chemical preparations for photographic uses (other than varnishes, glues, adhesives … latent photographic images visible (e.g., hydroquinone, catechol, pyrogallol, phenidone, p … ammonium persulphate). It should be noted, however, that mercuric chloride remains classified in …