Can anybody tell me if this stuff is like, or actually is “Silica Gel”?
Many boxes of merchandise we have received over the years contain packets of “Silica Gel” to prevent mold. Just curious if there is any relation to Dimethyl Fumarate.
Silica gel is safe, entirely different from dimethyl fumerate. Silica gel adsorbs moisture, does not gas off.
I think Silica Gel is packaged to absorb moisture, and hence, mold, and has no relation to Dimethyl Fumarate.

Silica gel only absorbs water vapor. They are put inside electronic equipment as well as pill vials. Toss them out. Unless you make expensive things. Then you have to add the packets which are dehydrated crystals of silica.