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CAS 492-80-8

C.I. Solvent Yellow 34 (Auramine)

Potential EDCCarcinogen

C.I. Solvent Yellow 34 (Auramine) is a synthetic yellow dye used for coloring textiles and paper and as a fluorescent stain in laboratories. It is toxic; workplace exposure has been linked to bladder cancer and irritation of the skin, eyes, and lungs [1][2].

Where It Comes From

Industrial dye manufacturing; used in dyeing/printing of textiles, paper, and leather; lab stains for microscopy [1][2].

How You Are Exposed

Breathing dye dusts/mists or getting it on skin during manufacturing, dyeing, or lab work; possible exposure near facilities if controls are poor [1][2].

Why It Matters

IARC classifies the manufacture of auramine as carcinogenic to humans (bladder cancer). NIOSH lists auramine as a potential occupational carcinogen and an eye/skin/respiratory irritant [1][2].

Who Is at Risk

Dye plant workers, textile/printing employees, and lab staff handling auramine stains—especially without good ventilation or protective gear [1][2].

How to Lower Your Exposure

Use closed systems and local exhaust, minimize dusts/aerosols, wear chemical-resistant gloves, goggles, and protective clothing, wash after handling, and follow NIOSH/OSHA controls; in labs, handle in ventilated enclosures and avoid skin contact [2].

References

  1. [1]IARC Monographs, List of Classifications: Manufacture of auramine (Group 1). International Agency for Research on Cancer. https://monographs.iarc.who.int/list-of-classifications
  2. [2]CDC/NIOSH Pocket Guide to Chemical Hazards: Auramine (CAS 492-80-8). National Institute for Occupational Safety and Health. https://www.cdc.gov/niosh/npg/

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