It’s a tissue fixative (glue). It’s yellow.
I have used a milder form on the ranch for years to help close up bulls (steers) post-castration.
Ding ding ding...we have a winner. We use this stuff as a liquid in the lab for fixing tissues so we can slice ‘em up and put ‘em on slides for our viewing pleasure.
There’s some fairly decent alternatives, but they don’t measure up for our purposes.
So long as it’s in liquid form, it’s rather benign....but once it dries....