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NAPHTHOL AS

  • C.I.:37505
  • CAS:92-77-3
  • Chemical Name: NAPHTHOL AS
  • Molecular formula: C17H13NO2
  • Appearance: Beige powder
  • Shade: Approximate
  • Intensity: 100±3%
  • Content: ≥98.5%
  • Melting point: ≥247℃
  • Alkali-insoluble: ≤0.15%
  • 2,3 acid content: ≤0.10%
  • The sieve residue 60 mesh (or 80 mesh)≤5%
  • Usage: This product is mainly used as an intermediate of organic pigments, which can produce Pigment Red 2, 21, 22, 32, 245, 258, 268; Pigment Orange 24; Pigment Violet 13, 17, 50; Pigment Blue 20
  • This product is also a commonly used primer, widely used in dyeing and printing of cotton fabrics. When dyeing cotton, the affinity to cotton is low, the coupling ability is medium, and the coupling PH value is determined according to the diazo component of ice dyeing. It can also be used for the dyeing of cotton yarn, polyester/cotton, vinylon, viscose, silk and acetate, as well as direct printing, co-printing with reactive dyes, resist printing on cotton fabrics, discharge printing, and the base color of reactive dyes Anti-dye printing, and for the manufacture of fast pigments, fast amines and fast sulfones.

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