UN 1402 has 2 classification variants in ADR 2025 — different hazard divisions or descriptions for the same UN number. Each variant may have different transport requirements.
Variant 1 of 2
CALCIUM CARBIDE
Hazard Class
4.3
Flammable Solids
Classification Code
W2
Packing Group
I
High danger
Hazard ID No.
X423
Kemler code
Transport Category
1
For 1,000-point rule
Tunnel Code
(B/E)
Tunnel restriction
Variant 2 of 2
CALCIUM CARBIDE
Hazard Class
4.3
Flammable Solids
Classification Code
W2
Packing Group
II
Medium danger
Hazard ID No.
423
Kemler code
Transport Category
2
For 1,000-point rule
Tunnel Code
(D/E)
Tunnel restriction
Check if UN 1402 qualifies for 1.1.3.6 exemption
Calculate small load points and check exemption thresholds
Other Flammable Solids (Class 4)
Use this data programmatically
GET /api/adr?un=1402📅Data: UNECE ADR 2025, licensed from Labeline.com. Last verified May 2026
ADR reference data only. Classification is the consignor's legal responsibility. Consult a DGSA for compliance decisions.
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