Hazard Class

4.1

Flammable Solids

Classification Code

PM1

Packing Group

III

Low danger

Hazard ID No.

—

Kemler code

Transport Category

For 1,000-point rule

Tunnel Code

Tunnel restriction

Hazard Labels Required

Label 4.1

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

Special Provisions (3)

SP 274SP 386SP 676

Special provisions may modify or add to the standard transport requirements for this substance. Refer to ADR 2025 Chapter 3.3 for full text of each provision.

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

Code governing tunnel passage

Use this data programmatically

GET /api/adr?un=3531

View API Docs →

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POLYMERIZING SUBSTANCE, SOLID, STABILIZED, N.O.S