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 ...

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 ...