Contact allergens
The synthetic azo dye Disperse Orange 31 was wrongly
substituted by Disperse Orange 3 in patch test materials
from Chemotechnique. This situation explains why
a relatively low percentage of patients positive to PPD
were positive to Disperse Orange 3, although a coreaction
is explained to be very frequent because of
skin transformation of Disperse Orange 3 into PPD.
Properties and Applications
Red orange, Yellow red. Dry red powder, insoluble in water. Apply to polyester and their blended fabric dyeing and printing. In the red orange polyester for, in the red for yellow nylon, in the vinegar on fiber for red orange.
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Standard
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Ironing Fastness
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Light Fastness
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Persperation Fastness
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Washing Fastness
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Fading
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Stain
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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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4-5
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2-3
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5-6
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5
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5
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4-5
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5
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