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Carbon Black Content for Medical-Grade Coatings

thread646-211660

Carbon Black Content for Medical-Grade Coatings

Carbon Black Content for Medical-Grade Coatings

(OP)
Hi.

Anyone know permissible carbon black levels for use in medical-grade, non-implantable coatings?

Any empirical data available with respect to cytotoxicity?

Thanks!

William Gunnar
http://www.IndustrialCoatingsWorld.com

RE: Carbon Black Content for Medical-Grade Coatings

(OP)
Hi.

Anyone else interested? I've found my answer.

While carbon black was reclassified 'Group 2B' some time ago, the route of entry was inhalation (by rats).  

To be classified a carcinogen or reproductive toxin, by OEHHA'a own definition, carbon black must meet the following criteria:

1) airborne
2) unbound
3) respirable size

But, within polymeric films (coatings), carbon black is encapsulated. ..."Exposure to carbon black, per se, does not occur when it remains bound within a product matrix, such as rubber, ink, or paint."



  

William Gunnar
http://www.IndustrialCoatingsWorld.com
 

RE: Carbon Black Content for Medical-Grade Coatings

Thanks for finishing the story.

 

Mike Halloran
Pembroke Pines, FL, USA

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