ADR portable tank provision TP25
Sulphur trioxide of 99.95 % purity or more may go without inhibitor if kept at or above 32.5 °C.
Sulphur trioxide that is 99.95 % pure or purer may be carried in tanks with no inhibitor, provided its temperature is kept at 32.5 °C or higher.
| Value | Applies when |
|---|---|
| 99.95 % | minimum purity for carriage without inhibitor |
| 32.5 °C | minimum temperature to be maintained |
Note. On page 201 the TP19–TP33 codes are printed in a column separate from their texts; texts were matched to codes in printed order (15 codes, 15 texts).
Carried by 1 Table A entry
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 4.2.5.3, TP25, page 201.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
ADR 2027 amendments (accepted, applying from 1 January 2027) are not yet reflected on this page.