UN1408 — Ferrosilicon

Class 4.3

Quick facts: UN1408

What it is
Ferrosilicon with 30 percent or more but less than 90 percent silicon
Hazard class
4.3 (subsidiary 6.1)
Packing group
III
Label
Division 4.3 - Dangerous When Wet · Division 6.1 - Toxic
Packaging (49 CFR 173)
Exceptions §173.151 · Non-bulk §173.213 · Bulk §173.240
Air limit per package
Passenger aircraft: 25 kg · Cargo aircraft: 100 kg
Special provisions
A1, A19, B6, IB8, IP4, IP7, T1, TP33, W100

Source: 49 CFR 172.101 Hazardous Materials Table — UN1408 (2025-01-01)

UN Number
UN1408
Hazard Class
4.3 (sub-risk 6.1)
Packing Group
III

Hazard Labels / Marks

  • Division 4.3 - Dangerous When Wet
  • Division 6.1 - Toxic

Source: 49 CFR §172.101 Hazardous Materials Table · 49 CFR §172.101 (2025-01-01)

Reference data transcribed from the published Dangerous Goods List. It is not legal advice and may not capture entry-specific exceptions, special provisions or packing-group ranges. Always verify against the current regulation edition for a specific shipment.

This is the reference entry for UN1408.

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