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Naphthol AS-D
Chemical name
Naphthol AS-D
C.I.
C.I. Azoic Coupling Component 18(37520)
Structural formula
Specification
Name
Specification
Appearance
Buff yellow uniform powder
Purity
98% min
Initial M.P as dry
190.0min
Bon Acid
0.3% max
Alkali insoluble matter
0.4% max
Shade produced by coupling with fast Scarlet R salt on cotton
Near the standard pattern to
Slightly differenc
Fineness (residue on 250µm sieve)
5.0% max
Strength
Up to 100 of the standard pattern
Uses
A grounding agent for scarlet shades; also be used as intermediate in manufacture of rapid fast colors and organic pigments.
Package
25kg net in plastic woven bags with plastic linings.
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