UN 1040 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
ETHYLENE OXIDE
Hazard Class
2
Gases
Classification Code
2TF
Packing Group
N/A
Not applicable
Hazard ID No.
263
Kemler code
Transport Category
1
For 1,000-point rule
Tunnel Code
(B/D)
Tunnel restriction
Variant 2 of 2
ETHYLENE OXIDE WITH NITROGEN up to a total pressure of 1 MPa (10 bar) at 50 °C
Hazard Class
2
Gases
Classification Code
2TF
Packing Group
N/A
Not applicable
Hazard ID No.
263
Kemler code
Transport Category
1
For 1,000-point rule
Tunnel Code
(B/D)
Tunnel restriction
Check if UN 1040 qualifies for 1.1.3.6 exemption
Calculate small load points and check exemption thresholds
Other Gases (Class 2)
Use this data programmatically
GET /api/adr?un=1040📅Data: UNECE ADR 2025, licensed from Labeline.com. Last verified April 2026
ADR reference data only. Classification is the consignor's legal responsibility. Consult a DGSA for compliance decisions.
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