... history:Non toxic, environment protection, highquality, lower price,Direct red 23 dye used in: Cotton and Viscose Fabric,Sik and Nylon ... Fabric ,etc. Technology Data Sheet -Direct red 23,Direct scarlet red 4BSNo.PropertyData1Product NoDDR-0232CI NoDirect red 233CAS ... ) 19Tinctorial Strength(mg/mL) 20Phase or Chroma Direct Dye-red 23,Direct Scarlet Red 4BS