Safe formula for acid glass etch?
There is no safe formula for etching glass because all chemical etching solutions for glass contain floride compounds which are extremely hazardous when absorbed through the skin or eyes, or inhaled or ingested, even the ones found in craft stores. If you are uncertain about how to use these compounds safely, you should consider sand blasting your design instead. Small, economical pen sized blasters are available that require little air.
Hi, Flourine is the element. When combined with hydrogen to form hydrogen fluoride, and the dissolved in water to form hydrofluoric acid. As hydofluoric acid, it will etch glass. Hydofluoric acid has a single hydrogen atom and one fluorine atom, physicaly its like hydrochloric acid, a clear liquid. The formula for hydroflouric acid is HF. Search Wiki for "hydrofluoric acid" to get more detail. Hope this helps, Mike
Things found in etching creams: Barium Sulfate, Sulfuric Acid, Sodium Bifluoride, and Ammonium hydrogen difluoride. Hydrofluoric acid is the main ingredient that will etch glass. Overall, the cream is a diluted form of hydrofluoric acid. It's not nearly as dangerous as pure hydrofluoric acid but still, be very cautious when using it.