Keep in mind there are new extensive Canadian federal EMR regs specifically for ammonium nitrate just by itself that would have to be compiled with.
That could be a real buzz-kill for most casual users. Looks like there is a 1KG threshold in the 2013 regs for ammonium nitrate sales and storage.
Much less record keeping below that threshold. If the buyer was storing more than 1Kg that would put them back into the next tier.
Explosives Regulations, 2013 SOR/2013-211
http ://laws-lois.justice.gc.ca/PDF/SOR-2013-211.pdf
477. Sections 478 to 495 apply to ammonium nitrate.
Just a small incomplete extract:
480. The local police force must be informed
in writing of all locations where
ammonium nitrate is to be stored or sold.
483. (1) A sign that warns against
unauthorized access must be posted on the
outside at each entrance to each location
where ammonium nitrate is stored.
490. Before ammonium nitrate is sold,
the buyer must be required to establish
their identity by providing
(a) if the buyer intends to use the ammonium
nitrate to manufacture an explosive
and a licence or certificate is required
for this purpose, the number of
the buyer’s licence or certificate;
492. (1) A record of each sale of ammonium
nitrate must be kept for two years
after the date of the sale. The record must
include the following information and documents:
(a) the buyer’s name, address and telephone
number;
(b) the date of the sale;
(c) the bill of lading, sales receipt or
similar document;
(d) the type of document provided under
section 490 and the document’s reference
number;
(e) the trade name and quantity of the
ammonium nitrate sold;
(f) an indication of whether the ammonium
nitrate was sold in bulk or in packages;
(4) This section does not apply if the
quantity of ammonium nitrate sold is 1 kg
or less.
Note: This exception for small sales of
ammonium nitrate applies only to the requirement
to keep a record of sale.