Hazard Class

Gases

Classification Code

2TC

Packing Group

N/A

Not applicable

Hazard ID No.

268

Kemler code

Transport Category

For 1,000-point rule

Tunnel Code

C/D

Tunnel restriction

Hazard Labels Required

Label 2.3Label 8

These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.

Quantity Limits & Transport

Limited Quantity

Max per inner package for LQ relief

Excepted Quantity

EQ code for excepted quantity relief

Transport Category

0=highest, 4=lowest restriction

Tunnel Restriction

C/D

Code governing tunnel passage

Use this data programmatically

GET /api/adr?un=2197

HYDROGEN IODIDE, ANHYDROUS