Vat dyestuffs are water-insoluble and they are soluble only in its reduced form or leuco salt form. Solathrene Dyes are Vat dyes for cellulose fabric that give the-best-in-class washing fastness and light fastness properties. Solathrene has a super fine molecule so it can easily diluted and changed to Leuco Vat form. Uniform, level dyeing of cellulosic fabrics and blends by continuous dyeing process Super fine, micro-molecular particle size to ensure stable dye dispersion, ease of reduction, and speck free performance. Ready to use, easy to handle, non-dusting, non-foaming and non mal-odorous dyestuff. Highly recommended to achieve and meet stringent quality/fastness demands: especially to light, repeated washings, laundering, post bleaching etc.