Direct Red 31

Certifications: ISO 9001:2015

Direct Red 31 Powder

Direct Dyes Powder

CI Number: 29100

Chemical Class: Disazo Dye

Form: Powder

Shade

Versatile Bluish-Red for Paper and Cotton

Direct Red 31 is a disazo direct dye that produces a clean, bluish-red shade. It is a reliable and economical choice for general-purpose dyeing of cellulosic fibres. Its good water solubility and strong affinity for paper pulp and cotton make it a popular colorant in paper mills and textile dyehouses for achieving consistent red shades where moderate fastness is acceptable.

Applications
  • Paper Colouring: A standard for dyeing various grades of paper, including packaging, tissue, and crepe paper.
  • Textile Dyeing: Provides a solid, bluish-red colour for cotton and viscose apparel.
  • Jute Dyeing: Can be used to produce a strong red colour on jute and other natural fibres.

Key Benefits

  • Clean, bluish-red shade.
  • Cost-effective with good colour yield.
  • Good solubility for easy application.
  • Strong affinity for cellulosic fibres.

Technical Highlights

  • Tone: Bluish
  • Ionic Nature: Anionic
  • Appearance: Dark Red Powder

Packaging & Availability

  • Supplied in a standardized powder form.
  • Standard Packing: 25 kg carton box.
  • Customized packaging is available upon request.