Name: UN 3423 — TETRAMETHYLAMMONIUM HYDROXIDE, SOLID
Creator: FreightUtils
License: https://creativecommons.org/licenses/by/4.0/

Hazard Class

6.1

Toxic & Infectious Substances

Classification Code

TC2

Packing Group

High danger

Hazard ID No.

688

Kemler code

Transport Category

For 1,000-point rule

Tunnel Code

(C/E)

Tunnel restriction

Hazard Labels Required

Label 6.1Label 8

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

Special Provisions

SP 279

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

(C/E)

Code governing tunnel passage

Check if UN 3423 qualifies for 1.1.3.6 exemption

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Other Toxic & Infectious Substances (Class 6)

UN 1051

HYDROGEN CYANIDE, STABILIZED con…

ETHYLENE CHLOROHYDRIN

UN 1143

CROTONALDEHYDE or CROTONALDEHYDE…

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📅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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