When muriatic acid dries(dissipates)is it still dangerous?

We etched a concrete floor to put down new tile, and i was just wondering if the dried out acid poses any health risks after it’s dried out. Thanks.

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Need help with muriatic acid?

I bought a floor coating for my garage (Ucoat-it). As part of cleaning the floor, the instructions said to mix muriatic acid and water to clean the concrete. I cannot find this anywhere. the instructions also say not to use a concrete etch, which is what people keep telling me to use. Any ideas? Know [...]

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Suggest any photoactive emulsion for screen printing which after exposing wont get washed with HNO3 & water.?

I want to use this photoactive emulsion directly upon metal sheet to expose my designs and then will do acid etching of exposed metal part… please suggest, thanks.

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suggest any photoactive emulsion for screen printing which after exposing wont get washed with HNO3 & water.?

I want to use this photoactive emulsion directly upon metal sheet to expose my designs and then will do acid etching of exposed metal part… please suggest, thanks.

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Does anyone know how to get glass rod for beads to adhere to pure copper wire?

I am using pure copper wire in sculpture and would like to add some glass accents to the ends of the 12 guage wire. The problem is that I can not get the molten glass to take to the hot copper so I can spin and wrap it. The wire is clean and abraded and [...]

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Problem etching PC boards.?

I’m using the peroxide/muriatic acid formula with sharpie resist pen. This has worked for me before, but now, the ink just comes right off. I’m doing this outdoors and the temp is currently ~100F. I’m thinking that’s the culprit. Any other ideas?

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What is the best chemistry for wet-etching polyimide?

The polyimide is chemically activated by a UV photopackage and derived from polyamic acid monomers. The poly is also hard-cured (‘baked’). I need to remove the polyimide (10 microns thick) from a thin copper film (10-30 microns) without damaging or corroding the copper. I’ve had some input that 8M Hydroxide at 95 degrees C will [...]

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Does anyone know a good online reference for WWII US dog tags?

I am looking for information on how to decode the information on a US dogtag from early in WWII. It is the oval type with the officer’s thumbprint acid etched on the back. I think these were only issued prior to the US entering WWII and had been in use since WWI. All of the [...]

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Please Help Chemistry Question?

What sub division of chemistry(inorganic, biochemistry, analytical, organic, and physical) is each of the following situations: *investigating a way to make stronger plastiv grocery bags *developing a better insulin-delivery system for diabetics *determining the minerals present in a soil sample *using an acid etch metal *creating a cleaner burning heating fuel

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What is the usual composition of glass frosting powder that is used on glass etching?

They said that they put a stuffing ingredient on it on top of Solid acid and Salt

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