Chromium naphthalenesulfonate rhodamine red complex

brilliant blue light red to violet (NC raw lacquer). Soluble in ethanol and water for purple, slightly soluble in Cellosolve. In concentrated sulfuric acid to blue light red, dilution after purple; In 10% of sodium hydroxide solution for red solution.

Standard	Light Fastness	Heat-resistant(℃)		water	Sodium Carbonate(5%)	Hydrochloric acid(5%)
		Melting point	Stable
ISO	Good		160	Good	General	General