Hydrogen peroxide – the same stuff you can pick up ... At concentrations of about 30%, it’s perfect for etching PCB boards, and at even higher concentrations – about 70% – it can be ...

Description: ITEM#:932 H2O2 CAS#:7722-84-1 F.W.:34.02 NFPA#:2-0-3 Specific Gravity: 1.100 DOT:5.1/8/II Descriptions: Stabilized with less than 1ppm of tin. Specification TEST 1. Assay 29.0-32.0% 2.

For example, concentrations of hydrogen peroxide greater than 30% can cause explosions when combined with metals like copper and iron. In addition, the potency of hydrogen peroxide will reduce as ...

Go figure. A common theme in etchants is to use hydrogen peroxide as an oxidant. The problem is, what you get in the drug store isn’t all that strong. In general, the higher the concentration of ...

60C works very well. Add 30mL of 30% hydrogen peroxide with stirring. Point out that the reaction is proceeding very slowly if at all (no gas bubbles visible). Pour 50mL of 0.4M cobalt chloride ...