Name: UN 3257 — ELEVATED TEMPERATURE LIQUID, N.O.S., at or above 100 °C and below its flash-point (including molten metals, molten salts, etc.), filled at a temperature higher than 190 °C
Creator: FreightUtils
License: https://creativecommons.org/licenses/by/4.0/

UN 3257 has 2 classification variants in ADR 2025 — different hazard divisions or descriptions for the same UN number. Each variant may have different transport requirements.

UN 3257Class 9 — Miscellaneous Dangerous SubstancesPG IIIVariant 1 of 2

ELEVATED TEMPERATURE LIQUID, N.O.S., at or above 100 °C and below its flash-point (including molten metals, molten salts, etc.), filled at a temperature higher than 190 °C

Packing Group: III; Low danger
Classification Code: M9
Tunnel Code: (D); Code governing tunnel passage
Transport Category: 3; For the 1,000-point rule (0 = highest restriction)
Hazard ID No.: 99; Kemler code
Limited Quantity: 0; Max per inner package for LQ relief
Excepted Quantity: E0; EQ code for excepted quantity relief

Hazard Labels Required

Label 9

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

Special Provisions

SP 274SP 643SP 668

Refer to ADR 2025 Chapter 3.3 for full text of each provision.

UN 3257Class 9 — Miscellaneous Dangerous SubstancesPG IIIVariant 2 of 2

ELEVATED TEMPERATURE LIQUID, N.O.S., at or above 100 °C and below its flash-point (including molten metals, molten salts, etc.), filled at or below 190 °C

Packing Group: III; Low danger
Classification Code: M9
Tunnel Code: (D); Code governing tunnel passage
Transport Category: 3; For the 1,000-point rule (0 = highest restriction)
Hazard ID No.: 99; Kemler code
Limited Quantity: 0; Max per inner package for LQ relief
Excepted Quantity: E0; EQ code for excepted quantity relief