So why should we care about 8-hydroxyquinoline sulfate ? For starters it is found in some hair products and denture/dental products.
It is in so many products despite it’s ability to cause cancer in lab rats and toxicity of the human digestive, respiratory and circulatory systems.
8-Hydroxyquinoline sulfate is a metal chelating agent extracted from coal tar. It has been used in a wide variety of products, from “bag balm” for cows to cosmetics and drugs, for its ability to inhibit the growth of imidazolidinylurea microbes. 1
The compound was previously used a preservative in cheese until it was deemed “harmful if swallowed” by the FDA, which has since banned it from all foods. 2 At some point in it’s history it was used as a pesticide, but is not considered obsolete. 3
A 2001 document on the effects of 8-hydroxyquinoline sulfate on livestock prepared for the USDA by the Organic Materials Review Institute states that “Although it is not generally reported as a carcinogen or teratogen, a test of the food additive formerly used as cheese preservative (8-hydroxyquinoline sulfate) found tumors in the bladder, brain, and uteri of rats and mice when administered intervaginally.” 4
According to the EWG, 8-hydroxyquinoline sulfate is considered a moderate health hazard with the ability to cause cancer, toxicity of the stomach, digestive tract, respiratory tract and cardiovascular system even in low exposure. It’s use in cosmetic products is either prohibited or strictly limited in most major countries. Finally, there have been no studies on the long term effects when left on the skin and absolutely no studies done on how much is absorbed into the bloodstream 5
Sources:
2. FDA
3. http://www.pesticideinfo.org/Docs/ref_regulatoryINT.html#WHOObsolete
4. SkinDeep and OMRI NOSB Tap Materials Database
5. EWG
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Tags: 8-hydroxyquinoline sulfate, Best of LM, chemical, dental, denture, EWG, FDA, hair, Health, pesticide, product, Science, soup, study, toothpaste, USDA
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