Yes, once ArtResin is cured, it is fully inert and can be safely used as a food contact surface.
ArtResin has been vigorously tested by a third party for leaching and migration across worldwide standards and passed every test: when used as directed, cured ArtResin will not leach any substances into food that comes into contact with it.
You can check out ArtResin's SDSfor further details.
Epoxy resins are prone to yellowing and other degradative effects from UV light, so stabilization additives are used to help mediate the damage. A UV stabilizer works to protect against gloss loss, cracking, chalking and de-lamination, and to some extent yellowing. A UV stabilizer merely delays yellowing in resins, so ArtResin has aHALS (hindered amine light stabilizer)added for extremely efficient long term yellowing protection.
ArtResin is derived from museum conservation-grade materials to ensure its water-clear clarity is preserved for decades. Many resins contain a UV stabilizer to help delay the epoxy's natural yellowing process, however this alone is not enough to prevent yellowing from happening. ArtResin contains both a UV stabilizer as well as an advanced additive calledHALS (hindered amine light stabilizer)that interrupts the yellowing process before it can begin. The result is that it stays clear both in the bottle and once cured.
ArtResin has been evaluated by a certified toxicologist at the American Society for Testing and Materials as being non-toxic when used as directed (conforms toASTM D4236). It is formulated using the highest quality materials and therefore produces no VOCs or fumes. It is a clean system, meaning there are no solvents or non-reactive diluents—everything in it reacts so nothing is free to become airborne and cause health issues. It is also non-flammable in its liquid form. For all these reasons, it is therefore classified as a non-hazardous material and is shippable by air. Furthermore, many curatives have a powerful odor, however ArtResin has only a low odor and is applicator friendly.
Yes, you can use ArtResin epoxy resin over watercolor. Usually watercolor paper is very thick and high quality in order to be able to stand up to water which makes it the perfect paper to apply resin to. Some papers can absorb resin, but watercolor paper typically does not.
Yes, you can resin over acrylics. ArtResin epoxy resin will not act as a solvent on acrylic so long as the surface you are resining is dry. If you are curious or hesitant as to what the outcome will be, simply conduct a test on a practice surface first.
ArtResin epoxy resin will bond well to every medium, with the exception of wax paper and plastics including silicone (i.e. materials that repel water). It works extremely well on wood, photographs, inkjet prints, acrylic, oil paint that has completely dried, watercolour, spray paint, encaustic, ink, paper collage, oil pastel, sculpture, flowers, rocks, and other found objects. You may want to avoid pouring it over loose materials (this may include chalk pastels); anything that is not completely adhered to the surface of your work could potentially mix into the resin in its liquid form once it's poured and float around. Some lower quality papers absorb resin rather than allowing it to sit on top, in which case a sealant should be used over the paper first to avoid seepage. The best thing to do is experiment and have fun!
The maximum temperature that cured ArtResin can tolerate is 120F or 50C.
At temperatures as high as that, the cured pieces may become a little flexible but once they cool off, they will harden up once again. Typically, the heat generated from a hot mug will not damage the resin surface on a coaster, but if your cured resin is exposed to temperatures beyond 120F or 50C, however - for example, you place a hot dish right out of the oven on a resined surface or you leave a cured piece in a hot car - it could cause irreparable damage.