Properties of REACTIVE DYE

 

Properties of REACTIVE DYE
MECHANISM	Covalent Bond Formation. Good Affinity for the Cellulosic Fibers. Smaller Molecule Size.
SOLUBILITY	Easily Soluble in Water. Good Affinity for Water. Polar Nature.
CHARGEABILITY	Negatively Charged. Remove Negative  Charge by Adding Salts, i.e. NaCl
SUBSTANTIVITY	Good Substantivity for the Fibers. High Degree of Fixation Efficiency. pH Range: 7 - 11
FASTNESS PROPERTIES	Washing       :  Good    Rubbing       :  Moderate Lightening   :  Good Chemical      :  Stable Perspiration :  Good
APPLIANCES	They are Applied to Cellulosic, Proteinic and Polyamide Fibers; i.e. Cotton, Wool.
COLOUR RANGE	Gamete Range of Colors. Brighter Shades. All Colors are Achievable.
ENVIRONMENT BEHAVIOUR	Non-Environmental Friendly. Carcinogenic Dye.

Properties of DIRECT DYE

 

Properties of DIRECT DYE
MECHANISM	Hydrogen Bonding. Vander Waal’s Forces between Fiber Surface and Dye Molecule. Larger Molecule Size.
SOLUBILITY	Soluble in Water. Good Affinity. Polar Nature.
CHARGEABILITY	Carry Negative Charge. Discharge by Adding Salts, i.e. Na2SO4 , CuSO3
SUBSTANTIVITY	Moderate Substantivity for the Fiber because of Larger Size of Molecule. pH Range: 10 - 11
FASTNESS PROPERTIES	Washing        :   Weak   Rubbing        :    Poor Lightening    :    Good Chemical       :    Poor Perspiration  :    Average
APPLIANCES	They are Applicable on Cellulosic and Proteinic  Fibers; i.e. Viscose, Silk.
COLOUR RANGE	Large Range of Colors. Dull and Darker Shades. All Colors are Achievable.
ENVIRONMENT BEHAVIOUR	Non-Environmental Friendly. Carcinogenic Dye.