Transport reference
UN 3259 — Amines, solid, corrosive, N.O.S. or polyamines, solid, corrosive, N.O.S.
Table A of ADR 2025 and the 49 CFR 172.101 Hazardous Materials Table for this number, kept side by side and never merged, plus the CLP label elements of the substances that ship under it.
The two tables are never merged. The same UN number can carry a different packing group, a different proper shipping name and entirely different special provisions in each system. Every value below sits under the name of the jurisdiction it comes from.
01 · Two jurisdictions
UN 3259 in ADR 2025 and in 49 CFR 172.101
The two systems differ for this number on 1 of 5 fields. Special provisions are deliberately absent from this comparison: identical code numbers mean different things in the two systems.
| Field | ADR 2025 Table A, Chapter 3.2 | 49 CFR 172.101 eCFR 2026-08-03 |
|---|---|---|
| Proper shipping name | AMINES, SOLID, CORROSIVE, N.O.S. or POLYAMINES, SOLID, CORROSIVE, N.O.S. | Amines, solid, corrosive, n.o.s., or Polyamines, solid, corrosive n.o.s. |
| Class or division | 8 | 8 |
| Packing group | I, II, III | I, II, III |
| Label codes | 8 | 8 |
| Rows in the table | 3 | 3 |
Sources: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE) · 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03
02 · ADR 2025
UN 3259 in Table A of ADR 2025
3 separate rows in Table A of Chapter 3.2. They are not interchangeable: the packing group follows from the properties of the consignment, and each row carries its own transport category — that is a different multiplier in the 1.1.3.6 calculation.
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels | Transport category | Hazard ID |
|---|---|---|---|---|---|---|
| AMINES, SOLID, CORROSIVE, N.O.S. or POLYAMINES, SOLID, CORROSIVE, N.O.S. | 8 | C8 | I | 8 | 1 | 88 |
| AMINES, SOLID, CORROSIVE, N.O.S. or POLYAMINES, SOLID, CORROSIVE, N.O.S. | 8 | C8 | II | 8 | 2 | 80 |
| AMINES, SOLID, CORROSIVE, N.O.S. or POLYAMINES, SOLID, CORROSIVE, N.O.S. | 8 | C8 | III | 8 | 3 | 80 |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 8 is “Corrosive substances” (ADR 2.1.1.1).
Transport category and the 1 000-point exemption
Column (15) of Table A decides whether a load stays under the exemption of ADR 1.1.3.6. Quantities of different categories are added with the multipliers below, and the sum must not exceed 1 000.
| Category | Max total quantity per transport unit | Multiplier in 1.1.3.6.4 | What it means |
|---|---|---|---|
| 1 | 20 | × 50 | Packing group I and the listed classes — the exemption runs out after 20 kg or litres per transport unit. |
| 2 | 333 | × 3 | Packing group II and the listed classes. |
| 3 | 1 000 | × 1 | Packing group III and the listed classes. |
Source: ADR 2025, 1.1.3.6.3 and 1.1.3.6.4 · ECE/TRANS/352 Vol. I (UNECE).
Special provisions — ADR 2025, Chapter 3.3
Codes from column (6) of Table A, with the text of Chapter 3.3.1. These are ADR provisions only. A code with the same number exists in 49 CFR 172.102 and means something else there — the two lists are never combined.
| SP 274 | The provisions of 3.1.2.8 apply. |
Source: ADR 2025, Chapter 3.3 special provisions · ECE/TRANS/352 Vol. I (UNECE)
Not imported and therefore not shown for this number: limited quantities (column 7a), excepted quantities (7b), packing instructions (8), tank codes (10–13) and the tunnel restriction code (15). An empty section is more honest than borrowed text.
03 · United States
UN 3259 in the 49 CFR 172.101 Hazardous Materials Table
3 separate rows in the Hazardous Materials Table. Where the rows differ only by the symbol in column (1), that symbol is what tells them apart — “D” is domestic-only, “I” is international.
| Symbols (1) | Proper shipping name (2) | Class (3) | PG (5) | Labels (6) | Packaging (8) | Quantity limits (9) | Vessel stowage (10) |
|---|---|---|---|---|---|---|---|
| G | Amines, solid, corrosive, n.o.s., or Polyamines, solid, corrosive n.o.s. | 8 | I | 8 | §173.None · §173.211 · §173.242 | 1 kg passenger 25 kg cargo | A · 52 |
| G | Amines, solid, corrosive, n.o.s., or Polyamines, solid, corrosive n.o.s. | 8 | II | 8 | §173.154 · §173.212 · §173.240 | 15 kg passenger 50 kg cargo | A · 52 |
| G | Amines, solid, corrosive, n.o.s., or Polyamines, solid, corrosive n.o.s. | 8 | III | 8 | §173.154 · §173.213 · §173.240 | 25 kg passenger 100 kg cargo | A · 52 |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 8 is “Corrosive material” (49 CFR 173.2). Packaging cells are section references into 49 CFR part 173: exceptions, non-bulk, bulk. Handling codes in column 10B are defined in 49 CFR 176.84, which is not part of our import — the numbers are shown as printed in the table.
What the column (1) symbols mean
| G | Technical name required. A proper shipping name for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description (see § 172.203(k)). |
Source: 49 CFR 172.101(b) · eCFR, revision 2026-08-03
Vessel stowage categories on this entry
| A | May be stowed “on deck” or “under deck” on a cargo vessel or on a passenger vessel. |
Source: 49 CFR 172.101(k) · eCFR, revision 2026-08-03
Special provisions — 49 CFR 172.102
Codes from column (7) of the Hazardous Materials Table, with the text of § 172.102. These are United States provisions only and have nothing to do with the ADR codes above, even where the number is identical.
| IB7 | Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and 31HZ1); Wooden (11C, 11D and 11F). |
| IB8 | Authorized IBCs: Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2 ); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and 31HZ1); Fiberboard (11G); Wooden (11C, 11D and 11F); Flexible (13H1, 13H2, 13H3, 13H4, 13H5, 13L1, 13L2, 13L3, 13L4, 13M1 or 13M2). |
| IP1 | IBCs must be packed in closed freight containers or a closed transport vehicle. |
| IP2 | When IBCs other than metal or rigid plastics IBCs are used, they must be offered for transportation in a closed freight container or a closed transport vehicle. |
| IP3 | Flexible IBCs must be sift-proof and water-resistant or must be fitted with a sift-proof and water-resistant liner. |
| IP4 | Flexible, fiberboard or wooden IBCs must be sift-proof and water-resistant or be fitted with a sift-proof and water-resistant liner. |
| T1 | Portable tank instruction. Minimum test pressure: 1.5 bar; minimum shell thickness (reference steel): § 178.274(d)(2); pressure-relief requirements: Normal; bottom opening requirements: § 178.275(d)(2). See 49 CFR 172.102(c)(7)(ii), Table of Portable Tank T Codes T1-T22. |
| T3 | Portable tank instruction. Minimum test pressure: 2.65 bar; minimum shell thickness (reference steel): § 178.274(d)(2); pressure-relief requirements: Normal; bottom opening requirements: § 178.275(d)(2). See 49 CFR 172.102(c)(7)(ii), Table of Portable Tank T Codes T1-T22. |
| T6 | Portable tank instruction. Minimum test pressure: 4 bar; minimum shell thickness (reference steel): § 178.274(d)(2); pressure-relief requirements: Normal; bottom opening requirements: § 178.275(d)(2). See 49 CFR 172.102(c)(7)(ii), Table of Portable Tank T Codes T1-T22. |
| TP33 | The portable tank instruction assigned for this substance applies for granular and powdered solids and for solids which are filled and discharged at temperatures above their melting point which are cooled and transported as a solid mass. Solid substances transported or offered for transport above their melting point are authorized for transportation in portable tanks conforming to the provisions of portable tank instruction T4 for solid substances of packing group III or T7 for solid substances of packing group II, unless a tank with more stringent requirements for minimum shell thickness, maximum allowable working pressure, pressure-relief devices or bottom outlets are assigned in which case the more stringent tank instruction and special provisions shall apply. Filling limits must be in accordance with portable tank special provision TP3. Solids meeting the definition of an elevated temperature material must be transported in accordance with the applicable requirements of this subchapter. |
Source: 49 CFR 172.102 special provisions · eCFR, revision 2026-08-03
04 · Orange plate
The orange-coloured plate for UN 3259
The upper half of the plate carries the hazard identification number, the lower half the UN number. Dimensions follow ADR 5.3.2.2.1: 400 × 300 mm, black border and dividing line 15 mm, figures 100 mm high.
88 — highly corrosive substance.
| 8 | Corrosivity |
| 8 | Corrosivity · doubled figure — intensification of that hazard |
Source: ADR 2025, 5.3.2.3 · ECE/TRANS/352 Vol. II (UNECE). The tunnel restriction code of column (15) is a different value and is not part of our import.
05 · Substances
Substances shipped under UN 3259
Linked by CAS number, never by name: a name match once produced “acetone cyanohydrin” for acetone, and a wrong link here would be a wrong classification. Each entry opens its own reference page with the CLP classification and label elements.
06 · The label side
What UN 3259 looks like on a workplace label
The tables above are the transport classification. This is the other half of the same material: the CLP label elements of the substances linked to this number — what actually goes on the drum once it has been delivered. Transport marks and supply labels answer different regulations and do not replace one another.
Hazard statements on the substances under UN 3259
| H302 | Harmful if swallowed. |
| H304 | May be fatal if swallowed and enters airways. |
| H312 | Harmful in contact with skin. |
| H314 | Causes severe skin burns and eye damage. |
| H315 | Causes skin irritation. |
| H317 | May cause an allergic skin reaction. |
| H318 | Causes serious eye damage. |
| H335 | May cause respiratory irritation. |
| H373 | May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Source: harmonised classification, EU CLP Annex VI. Transport classification and supply classification are decided under different rules and do not have to agree.
07 · FAQ
UN 3259 — frequently asked questions
What is UN 3259?
UN 3259 is the United Nations number for Amines, solid, corrosive, N.O.S. or polyamines, solid, corrosive, N.O.S.. Under ADR 2025 it is assigned to class 8 (corrosive substances), classification code C8.
What packing group is UN 3259?
Table A of ADR 2025 lists UN 3259 under 3 packing groups — I, II, III — as separate rows. The packing group follows from the properties of the specific consignment; it is not interchangeable, and each row carries its own transport category.
Is UN 3259 classified the same way in the United States and in Europe?
No. For UN 3259 the two tables differ on proper shipping name. Each panel on this page shows its own source; values from one system must not be carried over into the other.
What is the hazard identification number for UN 3259?
The orange-coloured plate for UN 3259 carries the hazard identification number 88 above the UN number. Under ADR 5.3.2.3.2 that number means: highly corrosive substance.
Which substances ship under UN 3259?
We hold 4 substances linked to UN 3259 by CAS number. Each one has its own reference page with the CLP classification, GHS pictograms and hazard statements that apply on the label — the workplace side of the same material.
Need the plate, the labels or the placards printed?
The orange plate above is a physical article, and so are the class labels in column (5). Our sister site GHSLabels.com covers printing and suppliers. For the workplace label of the same material, use the GHS label constructor, and browse other numbers in the UN number reference.
Reference aid only. Values are reproduced from ADR 2025 and the 49 CFR 172.101 table as published; the consignor remains responsible for the classification of a specific consignment. Always verify against the current published regulation and the supplier's safety data sheet.