ADR special provision 169
Solid phthalic anhydride and tetrahydrophthalic anhydrides with 0.05 % maleic anhydride or less are outside ADR; hot molten form goes to UN 3256.
Phthalic anhydride in solid form, and tetrahydrophthalic anhydrides, are not subject to ADR when they contain no more than 0.05 % maleic anhydride. Phthalic anhydride carried molten above its flash point, with the same maleic anhydride limit, must be classified as UN 3256.
| Value | Applies when |
|---|---|
| 0.05 % | maximum maleic anhydride content |
Refers to: UN 3256.
Carried by 2 Table A entries
Source: ADR 2025 (ECE/TRANS/352), Volume I, section 3.3.1, special provision 169, page 611.
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.