ADR special provision 504
Hydrated potassium and sodium sulphide (≥ 30 % water) and sodium hydrosulphide (≥ 25 % water) are Class 8.
Class 8 covers UN 1847 potassium sulphide and UN 1849 sodium sulphide when hydrated with at least 30 % water of crystallization, and UN 2949 sodium hydrosulphide hydrated with at least 25 % water of crystallization.
| Value | Applies when |
|---|---|
| 30 % water of crystallization | minimum, UN 1847 and UN 1849 |
| 25 % water of crystallization | minimum, UN 2949 |
Refers to: UN 1847; UN 1849; UN 2949; special provision 523.
Carried by 3 Table A entries
Source: ADR 2025 (ECE/TRANS/352), Volume I, section 3.3.1, special provision 504, page 641.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
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