On Wed, 13 Nov 2013, Marcus Leech wrote: > High-test peroxide I think was recently moved on to a "controlled goods" > list, because it can be used to make organic peroxides, which are high > explosives. Similarly for nitric acid (because it is a known-precursor > to nitrated-organics high-explosives). I'd never checked into the details of this, and got curious... Turns out that the magic phase to feed into Google is not "Controlled Goods" but "Restricted Components". As you might suspect from that terminology (and as Marcus indicated), the R.C. regulations are not about rocketry, but about illicit explosives manufacturing. In fact, they're very nearly entirely about ammonium nitrate, because of its known popularity for that purpose: there is a long section of rules specifically for AN, and a rather shorter section for other things. The full list of RCs is: ammonium nitrate (solid) hydrogen peroxide, 30% and up nitromethane potassium chlorate, perchlorate, and nitrate sodium chlorate and nitrate (solids) nitric acid, 68% and up No, AP is not on the list. Mixtures etc. aren't, only pure chemicals. Why some things are explicitly covered only as solids is not clear. The regulations are mostly about being a *dealer*, selling these things. Dealers have to register, and have to do security, inventory control, etc. They can lose their registration for repeated violations of the rules, or for "jeopardizing the safety of the public". (I suspect these rules are basically cloned from explosives-dealer rules, but haven't checked that.) For end users, if you're not a government agency, hospital, or post-secondary educational institution, and you are *not* buying the stuff as an explosive, and you want more than a threshold quantity (mostly on the liter/kg level), you have to: (a) show government-issued photo ID, or proof of Controlled Goods registration, or proof of business registration (b) provide contact info (c) say what you'll use the stuff for That's all -- no registration or permit required (unless you're going to use the stuff as an explosive, in which case the explosives rules apply). If the dealer has "reasonable grounds to suspect that the restricted component will be used for a criminal purpose", he is required to refuse to sell, and to promptly report the refusal to the authorities. Henry Spencer henry@xxxxxxxxxxxxxxx (hspencer@xxxxxxxxxxxxx) (regexpguy@xxxxxxxxx)