December 14, 2019, 06:27:15 AM
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Topic: Is Hei-Cast 8400 toxic?  (Read 439 times)

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Offline dentveran

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Is Hei-Cast 8400 toxic?
« on: October 23, 2019, 02:33:30 AM »
Hello,

I bought this silicone material to make a silicone part that goes into a person's mouth. I couldn't find any information regarding toxicity.

Any idea if it's safe to use in a person's mouth?

Thanks

Offline Borek

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Re: Is Hei-Cast 8400 toxic?
« Reply #1 on: October 23, 2019, 02:55:07 AM »
You need to ask the manufacturer.
« Last Edit: October 23, 2019, 06:17:20 AM by Borek »
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Offline DrCMS

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Re: Is Hei-Cast 8400 toxic?
« Reply #2 on: October 23, 2019, 04:41:51 AM »
Hei-Cast 8400 is not a silicone it is a three component polyurethane for vacuum casting/molding. 

One of those components is an isocyanate and that is likely to be toxic. 
One of the other components is a polyol which is harmless.
The third component is probably a plastisier as adding more of it reduces the hardness of the finished article.  Some plastisiers can be a health issue.

I would not put a product made by you using this in my mouth.

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