Herbal Extract #263421

We Offer Indigofera Tinctoria.Common Indian Name Indigo Blue Trade Name Blue Ocean PropertiesThe leaves of Indigofera tinctoria plant are fermented in fermentation pits. The dye is precipitated by oxidation or by passing the air. The precipitated blue natural dye at bottom is dried in the air to make the cake. This is a vat dye and is used after converted into liquid Leucoform form with sodium hydrosulphite and caustic soda in soft water. The dyeing is carried out in the reduced liquid form at about 25oC to 30oC or room temp. By oxidation, the dyed fabric slowly changes into blue colour form green. The process of dyeing of cotton, wool and silk is almost same. The appearance of dye is blue and main colouring compound is Indigotin.The Dye Specification BOTANICAL NAME : Indigofera tinctoria COMMON NAME : Indigo Blue PART USED : Leaves MAIN COLOURING COMPONENT : Indigotin CHEMICAL FORMULA : C16H10O2 TYPE OF DYE : Vat Dye C.I. NUMBER : C I Vat Blue 1 DESCRIPTION : It is prepared from leaves of plant Indigofera Tinctoria by natural fermentation process. APPEARANCE : Blue Powder SOLUBILITY IN WATER : 4.0 2.0 % PH OF 1% SOLUTION : 5 1 MOISTURE CONTENT : 5.0 1.0% TOTAL ASH CONTENT : 63.0 7.0 % ACID INSOLUBLE ASH : 35.0 2.0 % BULK DENSITY(gm/cc) : 0.80 to 0.90