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CAS 2832-40-8

C.I. Disperse Yellow 3

Disperse Yellow 3 is a synthetic azo dye widely used to color polyester and other synthetic fabrics. It matters because it can trigger allergic skin rashes and enters wastewater during textile dyeing [1][3].

Where It Comes From

Dyeing/printing of synthetic textiles; release from textile mills to wastewater; residue on new clothes and synthetic blends [1][3].

How You Are Exposed

Skin contact with dyed clothing (especially new, tight, or sweaty garments); workers may contact dye powders, mists, or dyed materials [1][2][3].

Why It Matters

Classified as a skin sensitizer that can cause allergic contact dermatitis; azo dyes can also affect aquatic environments when discharged [1][3].

Who Is at Risk

Textile and dye-house workers; people with eczema or known dye allergies; infants/children with sensitive skin; those wearing tight synthetic sportswear or underwear [2][3].

How to Lower Your Exposure

Wash new clothes before wearing; choose natural fibers or light/untreated colors; look for certified low-chemical textiles; avoid prolonged damp contact; workers should use gloves, ventilation, and hygiene practices [1][2][3].

References

  1. [1]U.S. EPA. Textile Mills Effluent Guidelines.
  2. [2]CDC/NIOSH. Skin Exposures and Effects (Contact Dermatitis and Irritants).
  3. [3]European Chemicals Agency (ECHA). Disperse Yellow 3 (CAS 2832-40-8) – Substance information and hazard classification.

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