Before and after the degree of iron oxide yellow, iron oxide green pigments inorganicintroduction already no longer unfamiliar, this paper introduces a kind of dye brilliant blue. Blue red purple uniform powder or granules, with metallic luster, odorless. It has characteristics of acid dyes, can make the animal fiber coloring. Soluble in water(18.7g/100mL, 21 DEG C), a green blue solution, insoluble in ethanol (1.5g/100mL,95% ethanol, 21 DEG C), glycerin, propylene glycol. Light, heat resistance. The citric acid, tartaric acid, alkali stability.
The identification method of Coomassie brilliant blue
(1) the product of 0.1g dissolved in 100mL of water, blue and clear solution.
(2) the product is slightly soluble in ethanol, not soluble in oil, having the characteristics of acid dyes, can make the animal fiber coloring.
(3) the maximum absorption wavelength of 100mL 0.001g containing 0.02mol/Lammonium acetate solution of this product is 630 + 2nm.
(4) the product solution, do paper chromatography, the main color point Rf valueshould be the same as the standard.
The conditions of chromatography paper:
Developing agent n-butyl alcohol; ethanol; ammonia (1%) =6:2:3
The temperature of 20~25 DEG C
Solution concentration of 0.g/100mL
Reagent dosage 2 L
Solvent front rise limit 160mm
The above is the identification method of Coomassie brilliant blue, I hope for your help. If you about iron oxide yellow, iron oxide green pigments, dyes, paints and otherissues need advice, welcome to call.
