UN/NA 2531 · Methacrylic acid, stabilized

Material name

2531 on a placard, orange panel or shipping paper

It points to the ERG 2024 entry “Methacrylic acid, stabilized” and to Guide 153P. On a numbered orange panel, 2531 is the lower number (how to read an orange panel).

ERG 2024 markings for 2531

In the ERG 2024 lists, “Methacrylic acid, stabilized” has guide number 153P; the P means the material may undergo violent polymerization.

2531 is not highlighted in green (no Table 1 entry).

Entries near 2531

By number (yellow pages): before 2531 come UN/NA 2527 Isobutyl acrylate, stabilized (Guide 129P); UN/NA 2528 Isobutyl isobutyrate (Guide 130) and UN/NA 2529 Isobutyric acid (Guide 132); after it, UN/NA 2533 Methyl trichloroacetate (Guide 156); UN/NA 2534 Methylchlorosilane (Guide 119) and UN/NA 2535 4-Methylmorpholine (Guide 132).

By name (blue pages): “Methacrylic acid, stabilized” comes after Metallic substance, water-reactive, self-heating, n.o.s. (UN/NA 3209, Guide 138) and Methacrylaldehyde, stabilized (UN/NA 2396, Guide 131P) and before Methacrylonitrile, stabilized (UN/NA 3079, Guide 131P) and Methallyl alcohol (UN/NA 2614, Guide 129).

Guide 153 · Library

Guide 153 covers 168 UN/NA numbers. The 12 around 2531 in the guide’s number order: UN/NA 2446 Nitrocresols, solid; UN/NA 2490 Dichloroisopropyl ether; UN/NA 2491 Ethanolamine; UN/NA 2511 2-Chloropropionic acid; UN/NA 2518 1,5,9-Cyclododecatriene; UN/NA 2522 2-Dimethylaminoethyl methacrylate, stabilized; UN/NA 2542 Tributylamine; UN/NA 2564 Trichloroacetic acid, solution; UN/NA 2565 Dicyclohexylamine; UN/NA 2572 Phenylhydrazine; UN/NA 2579 Piperazine; UN/NA 2583 Alkyl sulfonic acids, solid, with more than 5% free sulfuric acid.

Sources

• PHMSA · ERG 2024 · EN / ES / FR