开云体育

Off-topic chemical reaction.

hyu hyu All Messages By This Member #36312 Hello everyone, I hope you could help me with this I mixed hydrogen peroxide (volume 250) with Manganese dioxide in a bottle Is it safe the oxygen that is released through the bottle. ( like doing it indoors) The manganese dioxide was obtained from AA battery? ( with some white impurities) Thanks
keith All Messages By This Member #36313 开云体育 The white impurity’s may be ammonium chloride which is the electrolyte used in these batteries. When I was in junior high they used 3% drugstore peroxide and manganese dioxide for this. We put it in a test tube and set it in warm water. It gave off oxygen ? toggle quoted message Show quoted text On Jul 13, 2019, at 5:42 PM, hyu hyu via Groups.Io <hyu2123@...> wrote: Hello everyone, I hope you could help me with this I mixed hydrogen peroxide (volume 250) with Manganese dioxide in a bottle Is it safe the oxygen that is released through the bottle. ( like doing it indoors) The manganese dioxide was obtained from AA battery? ( with some white impurities) Thanks
AA9GG All Messages By This Member #36314 Our company recently had a batch of blank PCBs made.? The spec was the boards were to be masked white.? The boards house uses gold plating for RHOS.? Apparently when the boards went thru some final wash, the gold interacts with what ever they use for the white solder mask and turned 30% of the boards PINK!!!!!!? Our boards need to be white because they are used in eye testing light boxes and it helps the reflectivity of the light.? Next go around, we have to specify NO GOLD! -- Paul Mateer, AA9GG Elan Engineering Corp.
hyu hyu All Messages By This Member #36315 Hey Keith , thanks for your reply!!! On Saturday, July 13, 2019, 09:42:34 PM GMT-3, keith <keethpr@...> wrote: The white impurity’s may be ammonium chloride which is the electrolyte used in these batteries. When I was in junior high they used 3% drugstore peroxide and manganese dioxide for this. We put it in a test tube and set it in warm water. It gave off oxygen ? toggle quoted message Show quoted text On Jul 13, 2019, at 5:42 PM, hyu hyu via Groups.Io <hyu2123@...> wrote: Hello everyone, I hope you could help me with this I mixed hydrogen peroxide (volume 250) with Manganese dioxide in a bottle Is it safe the oxygen that is released through the bottle. ( like doing it indoors) The manganese dioxide was obtained from AA battery? ( with some white impurities) Thanks

Previous Topic Next Topic