Auramine O with C.I. Basic Yellow 2
Introduction
Auramine O, also known as Basic Yellow 2, is a diphenylmethane-based basic industrial dye, strictly prohibited from use in food.
Physicochemical Properties
As an industrial dye, the legal applications of Basic Auramine O are mainly concentrated in:
Textiles: Can be used for dyeing and printing on acrylic, silk, cotton, linen, and other fabrics. However, due to its poor lightfastness, it is rarely used in modern textile industry.
Non-textiles: Commonly used for coloring leather, paper, paints, inks, etc.
Research Uses: In microbiology, it is used as a fluorescent dye for staining acid-resistant bacteria (such as Mycobacterium tuberculosis).
Illegal Additives and Health Hazards
Basic Yellow 2, due to its bright color and low cost, has been illegally used by unscrupulous vendors in food to mask inferior ingredients and improve its appearance. Common illegal additives include:
Precautions
Strictly Prohibited for Use in Food: This is the most important safety red line. Auramine O is a non-edible substance in my country and is strictly prohibited from being added to any food.
Occupational Protection: When used in industrial production, proper protective measures must be taken. It is recommended to wear protective gloves, goggles, and a mask during handling to avoid skin contact, inhalation of dust, or accidental ingestion. Its Safety Data Sheet (MSDS) indicates that it poses hazards such as toxicity upon skin contact, harmful effects upon ingestion, and severe eye irritation.
Environmental Protection: Basic Auramine O (Basic Yellow 2) is extremely toxic to aquatic organisms and has long-term, persistent effects. Wastewater from its production must be treated and direct discharge is strictly prohibited.
Summary
Basic Auramine O (Basic Yellow 2) is a legal industrial dye, mainly used in some textiles, paper, and scientific research fields. However, due to its serious health risks, its use in food is strictly prohibited. In daily life, especially when purchasing foods easily dyed such as dried bean curd sticks and yellow croaker, be wary of products with abnormally bright and uniform colors.
Packaging
