(1) Ammonium nitrate hot concentrated solutions can be transported under this entry provided:
(a) The solution contains not more than 93 % ammonium nitrate;
(b) The solution contains at least 7 % water;
(c) The solution contains not more than 0.2 % combustible material;
(d) The solution contains no chlorine compounds in quantities such that the chloride ion level exceeds 0.02 %;
(e) The pH of an aqueous solution of 10 % of the substance is between 5 and 7, measured at 25 ºC; and
(f) The maximum allowable transport temperature of the solution is 140 ºC.
(2) Additionally, ammonium nitrate hot concentrate solutions are not subject to these Regulations provided:
(a) The solution contains not more than 80 % ammonium nitrate;
(b) The solution contains not more than 0.2 % combustible material;
(c) The ammonium nitrate remains in solution under all conditions of transport; and
(d) The solution does not meet the criteria of any other class or division.