Rhodamine B, the cancer-causing chemical

News Excerpt:

The Tamil Nadu government banned the sale and production of cotton candy in the state after it was found that the toxic chemical Rhodamine-B was being used to make it.

About the news:

  • Earlier, Puducherry banned the sale of cotton candy after it was declared ‘unsafe’ for consumption because it contained Rhodamine-B.
  • Rhodamine-B (RhB) is highly toxic for humans and is banned under the Food Safety and Standards Act 2006.

What is Rhodamine B?

  • Rhodamine B (RhB) is a water-soluble chemical that is commonly used for dyeing.
  • It is used in the textile, paper, leather and paint industries as a colouring agent that helps attain colours that fall under the red and pink spectrum. 
    • Although in powdered form, the chemical is green, it turns pink upon being added to water. 
  • Cotton candy, which is often spotted in shades of pink, seems to borrow it from the usage of Rhodamine B.

Why is it harmful?

  • If food containing this chemical is consumed regularly, it can cause damage to the cerebellum tissue in the brain and to the brainstem that connects the brain to the spinal cord. 
  • Even if consumed in low quantities, the chemical is highly toxic and carcinogenic.
  • RhB, as a colouring agent in food products, is prohibited as per the Food Safety and Standards Act 2006.

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