![]() Works well for really thick mixtures, which this was supposed to turn into. That's just a motor mounted above the flask, turning a shaft with a paddle on the end of it. We set up a three-neck flask with an overhead stirrer to run this in. acids splattering all over their arm when they did it (once!) the other way around. ![]() During that part I couldn't resist quoting the ancient adage, which works well in the East Arkansas accent of my youth: "Do like you oughter, add acid to water." Most chemists either remember that one, or they remember the syrupy conc. I had Toxic Jim do all this - weighing out the chromium compound, making the HCl. That's an easy solution to whip up, since it's just concentrated HCl out of the jug cut 1:1 with water. You take chromium trioxide, a vicious oxidant in itself which comes as clumpy fine purple crystals, and dissolve it in 6N hydrochloric acid. I shouldn't say "flaming " that's getting ahead of the story. Like all the Cr(VI) salts, it has a vivid color, in this case a flaming orange. Even in '85, you could buy it, but the freshly-made stuff was often better. That's pyridinium chlorochromate for the non-organic chemists out there, an oxidizing agent that doesn't seem to be used as much as it was 15 or 20 years ago. Chromium trioxide how to#One morning I showed him how to make PCC. But TJ did manage to furnish me with some of my more vivid lab stories in his brief time in my fume hood. I shouldn't be too hard on him, I guess: I was a summer undergrad in my time, too, and I wasn't a lot of help to anyone, either. I'll refer to him by an altered form of his nickname, henceforth as Toxic Jim. I've already had my lifetime's exposure to Cr(VI).īack in grad school, I had an undergraduate assistant one summer, a guy who was pretty green. I agree with comments I've seen that this is putting the cart in front of the horse a bit, but it also means that I probably wouldn't be a good candidate for the expedition. There are reports (updated here - DBL) that Mars may have hexavalent chromium compounds in its surface dust, which is already being brought up as a concern for future human exploration. I was reminded of it this morning, and thought I'd bring it more out into the light. Ranking Chromium trioxide ranks 2843rd in the Product Complexity Index (PCI).ĭescription Chromium trioxide is typically used as an oxidizing agent, such as in the manufacturing of chromium pigments or chrome plating.Note: this was a post on my old blog site, and never made the migration over to the current "In the Pipeline". The countries with the lowest tariffs are Angola (0%), Kenya (0%), Mauritius (0%), Rwanda (0%), and Tanzania (0%). The countries with the highest import tariffs for Chromium trioxide are Bahamas (40.2%), Bermuda (25%), Cayman Islands (22%), and Comoros (18.9%). Tariffs In 2018 the average tariff for Chromium trioxide was 2.77%, making it the 5962nd lowest tariff using the HS6 product classification. Imports In 2020 the top importers of Chromium trioxide were Brazil ($19.5M), United Kingdom ($15.1M), South Korea ($12.8M), Estonia ($11M), and China ($9.96M). ![]() Trade in Chromium trioxide represent 0.001% of total world trade.Ĭhromium trioxide are a part of Chromium Oxides and Hydroxides.Įxports In 2020 the top exporters of Chromium trioxide were Kazakhstan ($42.1M), United States ($35.9M), Turkey ($28.1M), South Africa ($12.6M), and Germany ($8.21M). Between 20 the exports of Chromium trioxide decreased by -17.2%, from $208M to $173M. In 2020, Chromium trioxide were the world's 3668th most traded product, with a total trade of $173M. Overview This page contains the latest trade data of Chromium trioxide. ![]()
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