3 Simple Ways to
Share What You Make

With Instructables you can share what you make with the world — and tap into an ever-growing community of creative experts.

PhotosPhotos

Share one or more photos of a project, recipe, or whatever you've made, quickly and easily.

Get Started

Learn more & Get Tips

Step by StepStep-By-Step

Share your step-by-step photos with text instructions of what you made so others can do it too!

Get Started

Learn more & Get Tips

VideoVideo

Share your how-to video. You'll need your embed code from a video site such as YouTube.

Get Started

Learn more & Get Tips

Favorite

"Volcano" Experiment with Ammonium dichromate

video "Volcano" Experiment with Ammonium dichromate

It is a decompostion reaction, of Ammonium dichromate, this reaction produce steam, Nitrogen gas and Chromium(III) oxide. The decomposition produce large amount of solid, which seems to be a Volcano eruption, hence this is called "Volcano" Experiment.

Watch more at http://www.youtube.com/cforchemistry

Digg:http://digg.com/d318ynZ

Music: Artifact by Kevin MacLeod @ incompetech.com
Licensed under Creative Commons "Attribution 3.0"

8 comments

Sep 27, 2009. 11:22 AM

lemonie says:

It's toxic & carcinogenic... How did you dispose of the waste? L

Sep 28, 2009. 4:51 AMcforchemistry (author) says:

I pack in a plastic bag, and sit for the chemical disposal company. They often come to collect hazard waste.

Sep 28, 2009. 10:56 AM

lemonie says:

We used to put stuff like that in the used-silica drum, big steel drum full of stinky-solids. Still I've seen people put anything down the sink that would go.... (thanks for the info) L

Sep 29, 2009. 2:44 AMcforchemistry (author) says:

It is a method that possible, but you have to dispose waste in the drum anyway, so getting a company is more appropriate.

Sep 29, 2009. 10:44 AM

lemonie says:

Oh yes, the drum was company-removed, we just used to throw all the solids in there (not nice). Having seen dodgy-was to dispose of things I'm generally interested.
(Thanks for the other comment on Cr^VI)

L

Sep 28, 2009. 1:18 AM

westfw says:

The waste is no longer particularly toxic or carcinogenic. The degree of danger in the original substance is somewhat subject to debate; most of the data come from chrome plating workers, who see more hot bubbling chromic acid solutions in a day of work (day after day) than a dozen volcanoes...

Sep 28, 2009. 10:59 AM

lemonie says:

I was referring to the toxic-orange stuff, which I believe has real data for it. Melange sulfur-chromique was something I guy used to swear was great for cleaning glass, but he was never allowed to do it (outside of Marsailles anyway).

L

Sep 29, 2009. 2:43 AMcforchemistry (author) says:

Chromium 6+ has proved to be carcinogenic, as workers or people living near electroplating plant in early days get cancer. It is easier to access bodies then chromium(III) oxide as dichromate are soluble.