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Modified graphene quantum dots have been used in this research as nanocatalyst to synthesize azo dyes.
Activated carbon catalyzed persulfate oxidation of Azo dye acid orange 7 at ambient temperature.
Australian retailers issued recalls because they found out a small number of azo dyes are harmful when there is prolonged and direct contact to the skin.
Azo dyes were found in only a small number of medicines.
Metal azo dye is less stable than phthalocyanine, has a higher error rate incidence when recording, and has a shorter lifespan.
Discs using azo dye as the data layer had less stability in light exposure and temperature/humidity stress testing.
mechanism and kinetic model for the decolorization of the azo dye Reactive Black 5 by hydrogen peroxide and UV radiation, chemosphere, 52: 1069-1077.
Australian retailers have recalled over 120,000 items of clothing due to the high levels of azo dye believed to have health risks.
Patented is an absorbent single-use article comprising: an absorbent element for storing bodily fluids; a backsheet which is fluid impermeable at least in sections, the fluid impermeable backsheet having a microporous breathable film, wherein the breathable film contains calcium carbonate as an organic filler material, the calcium carbonate present in an amount between 30% and 80% by weight relative to the mass of the breathable film; and wherein on the side of the film facing the absorbent element a moisture indicator is provided in the form of a visually perceptible textured arrangement applied by printing directly to the breathable film with a coating thickness of at least 2 pm, the moisture indicator including an azo dye with an RF value greater than 0.
Additives that may cause hyperactivity:Food additives What: E102 - Tartrazine Where: Found in soft drinks, ice cream, sweets, fish fingers, cakes and biscuits Effect: A synthetic yellow azo dye when consumed in conjunction with benzoic acid it appears to cause hyperactivity in children.
The labels listed a whole range of E numbers, such as the azo dye called sunset yellow (E110) used in cheese snacks.
Methyl red is a commonly used azo dye in laboratory assays, textiles, and other commercial products but little is known about its sensitization properties in humans.