Talk:Neutral red

I see other references to this as the hydrochloride salt of the base shown. Does anyone know which form is correct - base, or HCl salt? Walkerma (talk) 04:29, 19 May 2011 (UTC)
 * From the Merck Index 12th Ed, Entry 6571 - definitely indicated as the HCl salt (both naming and structure image). Also shown as the HCl salt on the Sigma-Aldrich website. --The chemistds (talk) 14:04, 22 May 2011 (UTC)