Congo red indicator

MSDSs, Storage, Handling, Transport, Labeling, computer management systems, and anything else to do with safety.
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Marama T
Posts: 74
Joined: 01 Aug 2017, 12:19
Job Title: Laboratory technician
School: Emmanuel Anglican College
Suburb: Ballina
State/Location: NSW

Congo red indicator

Post by Marama T »

I was doing a bit of research on Congo red because I'm updating a few labels. Found this - "However, the use of Congo red has long been abandoned, primarily because of its carcinogenic properties. Wikipedia". And this - "Congo Red is an azo dye, it is toxic to many organisms and is a suspected carcinogen and mutagen. ... Its structural stability makes it highly resistant to biodegradation, and obviously its bright color and toxicity are entirely undesirable in the environment." AAAARGH! Will stash it for disposal I think.
mtg
Posts: 356
Joined: 15 Aug 2011, 10:48
Job Title: Lab Tech
School: NDSC
Suburb: west gippsland
State/Location: VIC

Re: Congo red indicator

Post by mtg »

Or collect any waste for disposal. Lots of dyes are carcinogens, depends on quantities. Blue food dye in smarties used to be a known carcinogen. But you'd have to eat a truck load to be impacted. However if you have a good substitute go with that and see if another school wants yours. I ALWAYS regret every stain or dye I got rid of as within a year or 2 I'd get a prac that needed it!
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