33 UN Classification
SentID Model text, parameters and parameter values (with Indications and Explanations) PB# / notes 330000 UN Classification
Explanation: Class 1. Explosives:
Division 1.1 Substances & articles which have a mass explosion hazard.
(NOTE: A mass explosion is one which affects almost the entire load virtually instantaneously.)
Division 1.2 Substances & articles which have a projection hazard but not a mass explosion hazard.
Division 1.3 Substances & articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard.
Division 1.4 Substances & articles which present no significant hazard.
Division 1.5 Very insensitive substances & articles; mass explosion hazard.
Division 1.6 Extremely insensitive articles; no mass explosion hazard.
Class 2. Gases (compressed, liquefied, dissolved under pressure, or refrigerated):
This class comprises (a) permanent gases - gases which cannot be liquefied at ambient temperatures; (b) liquefied gases - gases which come liquid under pressure at ambient temperatures; (c) dissolved - gases dissolved under pressure in a solvent, which may be absorbed in a porous material; and (d) refrigerated permanent gases such as liquid air, oxygen, etc.
Division 2.1 Flammable gases
Division 2.2 Non-flammable, non-toxic gases Division 2.3 Toxic gases.
Class 3. Flammable Liquids: Flammable liquids are liquids, or mixtures of liquids, or liquids containing solids in solution or suspension (for example, paints, varnishes, lacquers, etc., but not including substances otherwise classified on account of their dangerous characteristics) which give off a flammable vapour at temperatures of not more than 60.5°C, closed-cup test, or not more than 65.6°C, open-cup test.
Class 4. Flammable Solids: Substances liable to spontaneous combustion; substances which, on contact with water, emit flammable gases.
Division 4.1 Flammable solids, self-reactive substances, solid desensitized explosives and polymerizing substances. Solids, other than those classed as explosives, which under conditions encountered in transport are readily combustible, or may cause or contribute to fire through friction.
Division 4.2 Substances liable to spontaneous combustion. Substances liable to spontaneous heating under normal conditions encountered in transport, or heating up in contact with air, and being then liable to catch fire.
Division 4.3 Substances which, on contact with water, emit flammable gases.
Class 5. Oxidizing substances; organic peroxides
Division 5.1 Oxidizing substances. Substances which, while in themselves not necessarily combustible, may, generally by yielding oxygen, cause, or contribute to, the combustion of other materials.
Division 5.2 Organic peroxides. Organic substances which contain the bivalent -O-O- structure and may be considered derivatives of hydrogen peroxide, where one or both of the hydrogen atoms have been replaced by organic radical.
Class 6. Poisonous (toxic) and infectious substances.
Division 6.1 Poisonous (toxic) substances. These substances are liable either to cause death or serious injury or to harm human health if swallowed or inhaled, or by skin contact.
Division 6.2 Infectious substances. Substances containing viable micro-organisms or their toxins which are known, or suspected, to cause disease in animal or humans.
Class 7. Radioactive material. A radioactive material is defined as any material for which the specific activity is greater than 70 kBq/kg (0.002 microCi/g).
Class 8. Corrosives. These are substances which, by chemical action, will cause severe damage when in contact with living tissue, or, in case of leakage, will materially damage, or even destroy, other goods or the means of transport; they may also cause other hazards.
Class 9. Miscellaneous dangerous substances. These are substances and articles which during the transport present a danger not covered by other classes.
Indication: Mention when available; see 33 for the UN number. Complete with the applicable number which can be found in the United Nations Recommendations on the Transport of Dangerous Goods, latest revised edition, available in UNECE website below the menu 'UN Model Regulations'
(https://www.unece.org/trans/danger/publi/unrec/rev20/20files_e.html).
See also the latest edition of the legal file of the International Register of Potentially Toxic Chemicals (IRPTC) of United Nations Environment Programme, Geneva. Also mention the UN Subsidiary Risks (330002) and Packing Group (330003).
330001 UN Hazard Class: [P1|; |; ]. 23503000
Parameters: 25 parameters: P1: 1; 1.1; 1.1D; 1.1D (Desensitized); 2; 2.1; 2.2; 2.3; 3; 4; 4.1; 4.1 (wetted); 4.2; 4.2 (calcium pyrophoric); 4.2 (dry); 4.3; 5; 5.1; 5.2; 5.3; 6; 6.1; 7; 8; 9
330002 UN Subsidiary Risks:[P1|, |and ] 23504000
Parameters: 24 parameters: P1: 1; 1.1D; 2; 2.1; 2.2; 2.3; 3; 4; 4.1; 4.1 (wetted); 4.2; 4.2 (calcium pyrophoric); 4.2 (dry); 4.3; 5; 5.1; 5.2; 5.3; 6; 6.1; 6.1 (Desensitized); 7; 8; 9 CGC remarks: In UN model 2017, the term ‘Risks’ has been replaced with ‘Hazards’.
330003 UN Pack Group:[P1|, |, ] 23505000
Explanation: The recommendations on the packing of dangerous goods are based, in the main, on existing international and national regulations. Account is also taken of a prevailing trend to replace the detailed specifications of packaging, which may vary considerably from one country to another, by tests designed to ensure that packages containing dangerous goods can withstand normal conditions of transport and to ensure the
desirable level of safety. When drafting the recommendations sight was not lost of improvements and changes that may occur as a result of progress in science and technology. So provisions are made for the use of packaging which, while not complying exactly with the specifications set out in the recommendations, would be nevertheless as satisfactory in every respect as those that do, and would successfully pass the recommended tests when prepared for transport.
Indication: Dangerous goods of all classes other than UN Hazard Classes 1, 2, 6.2, and 7 (see 330001) have for packing purposes been divided among three groups according to the degree of danger they present: great danger: Packing Group I;medium danger: Packing Group II; and minor danger: Packing Group III.
Parameters: 4 parameters: P1: I; I (calcium pyrophoric); II; III 330005 Carriage by some modes of transport is prohibited.
been difficult to fill out for Compilers, due to ‘migration/programming complications’ encountered. Regarding the OEL field, the Compilers were advised: DO NOT TOUCH! (“the Secretariat will complete this field after the Peer Review meeting”).
As of 2018 a new field (Field 79) for entering OEL values has become available to compilers.
In this field three types of OELs can be entered: TLVs (by the ACGIH), MAKs (by the German DFG), and EULs (by the European SCOEL).
79 Occupational exposure limits
SentID Model text, parameters and parameter values (with Indications and Explanations) PB# / notes CGC
remarks:
The available sentences and parameters should be self-explanatory.
If desired, new indications for this field and its sentences will be developed.