Solvent Yellow 21 Chemical Properties

Density 

1.445[at 20℃]

vapor pressure 

0Pa at 25℃

Water Solubility 

170.1mg/L at 20℃

LogP

1.098 at 20℃

EPA Substance Registry System

Chromate(1-), bis[2-[[4,5-dihydro-3-methyl-5-(oxo-.kappa.O)-1-phenyl-1H-pyrazol-4-yl]azo-.kappa.N1]benzoato(2-)-.kappa.O]-, hydrogen (5601-29-6)

Solvent Yellow 21 Usage And Synthesis

Preparation

3-Amino-4-hydroxybenzenesulfonic acid?diazo, and 3-Oxo-N-phenylbutanamide coupling, and then and chlorinated cobalt complexation and filtering.

Flammability and Explosibility

Non flammable

Properties and Applications

the original dyes as deep yellow powder. Slightly soluble in water, soluble in ethylene glycol ether and DMF and organic solvent such as ethanol, soluble in organic solvent for tan after solution is finished product. Mainly used for pigskin, such as cow leather, goat natural leather finishing the spray or curtains, especially suitable for aniline leather spraying shading.

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