Shipping Classification
Potassium nitrate and sodium nitrite mixtures
What this means
Potassium nitrate and sodium nitrite mixtures appears on the federal Hazardous Materials Table (49 CFR §172.101), the table that governs how a material must be classified, packaged, and labeled for transport.
Hazard class / division
Class 5.1
UN / NA identification number
UN1487
Packing group
II
Label codes
5.1
Packaging — exceptions
152
Packaging — non-bulk
212
Packaging — bulk
240
Passenger aircraft / rail limit
5 kg
Cargo aircraft only limit
25 kg
Vessel stowage location
A
Vessel stowage — other
56, 58
Special provisions (§172.102)
B78 — Tank cars must have a test pressure of 4.14 Bar (60 psig) or greater and conform to Class 103, 104, 105, 109, 111, 112, 114 or 120. Heater pipes must be of welded construction designed for a test pressure of 500 psig. A 25 mm (1 inch) woven lining of asbestos or other approved material must be placed between the bolster slabbing and the bottom of the tank. If a tank car tank is equipped with a non-reclosing pressure relief device, the rupture disc must be perforated with a 3.2 mm (0.13 inch) diameter hole. If a tank car tank is equipped with a reclosing pressure relief valve, the tank must also be equipped with a vacuum relief valve.
IB8 (see §172.102 or related section for full text)
IP2 (see §172.102 or related section for full text)
IP4 (see §172.102 or related section for full text)
T3 (see §172.102 or related section for full text)
TP33 (see §172.102 or related section for full text)
Packaging citations reference sections of 49 CFR Part 173 not expanded here. View the full official table on eCFR.gov.
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Source: Hazardous Materials Table (49 CFR §172.101) and Special Provisions (49 CFR §172.102), current as retrieved from eCFR.gov. View official table.