Chemical Forums

Specialty Chemistry Forums => Materials and Nanochemistry forum => Topic started by: dentveran on October 23, 2019, 02:33:30 AM

Title: Is Hei-Cast 8400 toxic?
Post by: dentveran 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.
(https://imgur.com/a/lfGAqNU)
Any idea if it's safe to use in a person's mouth?

Thanks

Title: Re: Is Hei-Cast 8400 toxic?
Post by: Borek on October 23, 2019, 02:55:07 AM

You need to ask the manufacturer.

Title: Re: Is Hei-Cast 8400 toxic?
Post by: DrCMS 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.