CHARACTERISTICS : Lustrous Grains, Imparts full black shade with a slight                                                    reddish or greenish tone according to the equirement.

      APPLICATION : Used for Jigger, Winch and package-Dyeing for Cotton and
                                          Viscose  rayon. Economic in Continuous dyeing.

      STORAGE : It is quite stable, if stored in cool and dry place.

      GENERAL PROPERTIES : This dye belongs to the group of Sulphur Dyes. It is mainly used for dyeing Cellulosic fiber. It is also useful for dyeing viscose, staple fiber and yarn, including material which is to be given a resin finish, Silk, package dyeing and for continuous process. The light fastness of Sulphur Black is very good.
Hue. Artificial Light (tungsten) Greenish Black to Bluish Black

      DYEING : (a) Optimum dyeing temp. : 80-95deg. cent. Occasionally cold
                            (b) Solubility in Na2S : Very Good
                            (c) Exhaustion : Good
                            (d) Dyeing rate : Moderate
                            (e) Solubility in water : Soluble.

      AFTER TREATMENT :  (a) Acetic acid : Slightly redder
                                                      (b) Acetic acid & chrome : Redder, material must be well  rinsed and should be left slightly alkaline (Sodium acetate in final rinsing water after dyeing to counteract formation of acid, which may result in tendering, in unfavorable  condition of storage)

      FASTNESS PROPERTIES : (a) Acid (Organic) : 4-5
                                                              (b) Alkali : 4-5
                                                              (c) Hot processing : 5
                                                              (d) Light : 6-7
                                                              (e) Mercerizing : Redder-Apparent increase in strength
                                                              (f) Milling : 4-5
                                                              (g) Perspiration : 5
                                                              (h) Washing moderate : 5
                                                                    Washing Severe : 4-5