Dark brown. soluble in water and ethanol is red light brown, the strong sulfuric acid for orange brown; For dark red light after diluted orange; Join the hydrochloric acid solution with brown precipitation, add sodium hydroxide to red, and then into a brown precipitation.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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|
Fading
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Stain
|
Fading
|
Stain
|
Fading
|
Stain
|
|
ISO
|
6
|
3
|
4
|
4-5
|
4-5
|
4-5
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|
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