Properties and Applications
green light blue. Soluble in water for blue, not soluble in alcohol. The strong sulfuric acid as dark blue in green, diluted red for purple, have precipitation; In nitric acid for dark red. The dye solution to join strong hydrochloric acid has the purple precipitation; Add sodium hydroxide solution for red light purple.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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4
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4
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5
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2
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2-3
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