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Naphthol AS C.I Naphthol 2 (37505)
Azoic Dyes
Structural formula:
Molecular Formula: C17H13O4N2
Molecular Weight: 261.31
Physical and chemical properties:
Appearance is light cream-colored uniform powder. Initial melting point is more than 247℃. Soluble in alcohol and sodium hydroxide solution．And its solution is yellow clear liquid. It can couple with diazo salts of aromatic anilines to produce insoluble azoic dyes.
Specification:
Appearance: light yellow cream-colored powder
Content: ≥98.5%
I,M,P of dry Product: ≥247.2℃
Insolubles in alkali solution: ≤0.1%
Shade after coupled with scarlet red base G: similar
Strength after coupled with scarlet red base G: 100±5
Cotent of Bon acid: ≤0.1%
Application: For manufacturing organic pigments and dyeing and printing cotton fibre, viscose fibre and a part of synthsis fibre.
Packing: In 25kgs net in iron drums, woven bags, kraft paper bags, fibre drums, all lined with plastic bag. {BACK} |
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