49 CFR 172 Special Provision 370 (Numeric Codes)

These provisions are multi-modal and apply to bulk and non-bulk packagings.

Code	370
Description	This entry also applies to Ammonium nitrate with not more than 0.2% combustible substances, including any organic substance calculated as carbon, to the exclusion of any added substance, that gives a positive result when tested in accordance with Test Series 2 of the UN Manual of Tests and Criteria, Part I (incorporated by reference; see Sec. 171.7 of this subchapter). See also UN No. 1942.
HazMat with this Code	UN 0222 - Ammonium nitrate, with more than 0.2 percent combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance