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UN 1055: ISOBUTYLENE

UN 1055 (ISOBUTYLENE) belongs to ADR class 2 (Gases). Hazard identification number: 23. Tunnel restriction code: B/D.

Class
2Gases
Classification code
2F
Warning labels
2.1
Hazard identification number (Kemler)The first digit is the main hazard (2 gas, 3 flammable liquid, 4 flammable solid, 5 oxidising, 6 toxic, 8 corrosive, 9 miscellaneous), the next digits are additional hazards, a repeated digit (e.g. 33) means an intensified hazard, an X before the number means a dangerous reaction with water.
23
Tunnel restriction code
B/D: Code with a slash: the restriction depends on the way of carriage (in a tank or otherwise). See table 8.6.4 of ADR. Tunnel categories in the code: B, D.
Transport categoryThe transport category (0 to 4) sets the multiplier: according to ADR Check, category 1: multiplier 50, category 2: multiplier 3, category 3: multiplier 1, category 4: multiplier 0 (no limit), and category 0 means the exemption does not apply. Points are the net quantity (kg or L) times the multiplier.
2
Multiplier for the 1000-point limitPoints are the net quantity (kg or L) times the multiplier; a load total not exceeding 1000 points falls within the ADR 1.1.3.6 exemption.
3
Limited quantity (LQ)The largest quantity per inner packaging for which carriage can use the limited-quantity rules.
0
Excepted quantity (EQ)A code indicating the limits for excepted quantities; its content is given in the text of ADR.
E0
Packing instructionsPacking instruction codes (e.g. P, IBC, R) indicate which packagings are permitted.
P200
Mixed packingCodes (MP) say how this substance may be packed together with others in one outer packaging.
MP9
Loading, unloading and handlingThe codes indicate provisions on carriage, loading and unloading.
CV9, CV10, CV36
Operation of the vehicleCodes (e.g. S2, S20) indicate additional operating provisions for carriage.
S2, S20
Environmental hazard
yes

The content of the packing codes and the carriage provisions is in ADR, chapters 4.1 and 7.

Special provisions

  • 662: Cylinders not conforming to the provisions of Chapter 6.2 which are used exclusively on board a ship or aircraft, may be carried for the purpose of filling or inspection and subsequent return, provided the cylinders are designed and constructed in accordance with a standard recognized by the competent authority of the…
    Show the full provision
    country of approval and all the other relevant requirements of ADR are met including: (a) The cylinders shall be carried with valve protection in conformity with 4.1.6.8; (b) The cylinders shall be marked and labelled in conformity with 5.2.1 and 5.2.2; and (c) All the relevant filling requirements of packing instruction P200 of 4.1.4.1 shall be complied with. The transport document shall include the following statement: "Carriage in accordance with special provision 662".

Tools

Limited quantities (LQ) · 1000-point calculator · Load compatibility

Data: ADR Check (adr.exportsy.pl). Basis: European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR). For guidance only, it does not replace the text of the Agreement or the assessment of a dangerous goods safety adviser (DGSA).