Dinitro-naphtol

Can be coupled in the 4-position with dia-zotized bases to give a series of azo dyestuffs more usually it is first sulphonated to give a valuable series of intermediates for solubilized azo dyestuffs. The nitro-l-naphthols are themselves dyestuffs, e.g. 2,4-dinitro-l-naph-thol ( naphtol yellow ). 

Other common intermediates for azo pigment production are 2,4-dinitro-aniline, acetoacet-o-chloroanilide, acetoacet-o-toluidide, phenyl- and p-tolyl-methylpyrazolone, 2-hydroxy-3-naphthoic acid, Naphtol AS and its derivatives, and 2-chloro-4-aminotoluene-5-sulfonic acid. 

SYNS C.I. 10315 2,4-DIN ITRO-l-NAFTOL 2-4 DINITRO-a- APHTOL 2-4 DINITRO-tt-NAPHTOL... 

DINITRO-l-NAPHTHOL see DUX800 2-4 DINITRO-a-NAPHTOL see DUX800... 

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