Name: UN 1929 — POTASSIUM DITHIONITE (POTASSIUM HYDROSULPHITE)
Creator: FreightUtils
License: https://creativecommons.org/licenses/by/4.0/

Hazard Class

4.2

Flammable Solids

Classification Code

Packing Group

Medium danger

Hazard ID No.

Kemler code

Transport Category

For 1,000-point rule

Tunnel Code

(D/E)

Tunnel restriction

Hazard Labels Required

Label 4.2

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

(D/E)

Code governing tunnel passage

Check if UN 1929 qualifies for 1.1.3.6 exemption

Calculate small load points and check exemption thresholds

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Other Flammable Solids (Class 4)

ALUMINIUM POWDER, COATED

UN 1310

AMMONIUM PICRATE, WETTED with no…

Use this data programmatically

GET /api/adr?un=1929

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📅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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