Calcium, pyrophoric or Calcium alloys, pyrophoric

Table row: 641
Proper shipping name: Calcium, pyrophoric or Calcium alloys, pyrophoric
Hazard class: 4.2
UN / NA number: UN1855
Packing group: I
Label codes: ["4.2"]
Special provision codes: ["W31"]
Packaging exceptions (49 CFR 173.***): None
Non-bulk packaging (49 CFR 173.***): 187
Bulk packaging (49 CFR 173.***): None
Quantity limit, passenger aircraft or rail: Forbidden
Quantity limit, cargo aircraft only: Forbidden
Stowage location (column 10A): D
Other stowage provisions (column 10B): 13, 148
Is forbidden: false

Source

eCFR Versioner full XML — 49 CFR Part 172, HMT — Office of the Federal Register / NARA · Cleared for reuse
Read from https://www.ecfr.gov/api/versioner/v1/full/2026-10-07/title-49.xml?part=172 (49 CFR § 172.101 HMT, data row 641)
Federal government regulatory text; GPO public-domain policy applies to government work; inspect third-party material separately — terms