Classification of samples
When the class of a substance is uncertain and it is being carried for further testing, a tentative class,
proper shipping name and UN number shall be assigned on the basis of the consignor's knowledge of
the substance and application of:
(a) the classification criteria of Chapter 2.2; and
(b) the requirements of this Chapter.
The most severe packing group possible for the proper shipping name chosen shall be used.
Where this provision is used the proper shipping name shall be supplemented with the word
"SAMPLE" (e.g., "FLAMMABLE LIQUID, N.O.S., SAMPLE"). In certain instances, where a
specific proper shipping name is provided for a sample of a substance considered to meet certain
classification criteria (e.g., GAS SAMPLE, NON-PRESSURIZED, FLAMMABLE, UN No. 3167)
that proper shipping name shall be used. When an N.O.S. entry is used to carry the sample, the proper
shipping name need not be supplemented with the technical name as required by special provision 274
of Chapter 3.3.
Samples of the substance shall be carried in accordance with the requirements applicable to the
tentative assigned proper shipping name provided:
(a) The substance is not considered to be a substance not accepted for carriage by sub-sections
2.2.x.2 of Chapter 2.2 or by Chapter 3.2;
(b) The substance is not considered to meet the criteria for Class 1 or considered to be
an infectious substance or a radioactive material;
(c) The substance is in compliance with 18.104.22.168.15 or 22.214.171.124.9 if it is a self-reactive substance
or an organic peroxide, respectively;
(d) The sample is carried in a combination packaging with a net mass per package not exceeding
2.5 kg; and
(e) The sample is not packed together with other goods.
Classification of packagings, discarded, empty, uncleaned
Empty uncleaned packagings, large packagings or IBCs, or parts thereof, carried for disposal,
recycling or recovery of their material, other than reconditioning, repair, routine maintenance,
remanufacturing or reuse, may be assigned to UN 3509 if they meet the requirements for this entry.
CLASS SPECIFIC PROVISIONS
Class 1 Explosive substances and articles
The heading of Class 1 covers:
(a) Explosive substances: solid or liquid substances (or mixtures of substances) capable by
chemical reaction of producing gases at such a temperature and pressure and at such a speed as
to cause damage to the surroundings.
Pyrotechnic substances: substances or mixtures of substances designed to produce an effect by
heat, light, sound, gas or smoke or a combination of these as the result of non-detonating
self-sustaining exothermic chemical reactions;
NOTE 1: Substances which are not themselves explosive but which may form an explosive
mixture of gas, vapour or dust are not substances of Class 1.
NOTE 2: Also excluded from Class 1 are: water- or alcohol-wetted explosives of which the
water or alcohol content exceeds the limits specified and those containing plasticizers - these
explosives are assigned to Class 3 or Class 4.1 - and those explosives which, on the basis of
their predominant hazard, are assigned to Class 5.2.
(b) Explosive articles: articles containing one or more explosive or pyrotechnic substances;
NOTE: Devices containing explosive or pyrotechnic substances in such small quantity or of
such a character that their inadvertent or accidental ignition or initiation during carriage
would not cause any manifestation external to the device by projection, fire, smoke, heat or
loud noise are not subject to the requirements of Class 1.
(c) Substances and articles not mentioned above which are manufactured with a view to producing
a practical effect by explosion or a pyrotechnic effect.
For the purposes of Class 1, the following definition applies:
Phlegmatized means that a substance (or "phlegmatizer") has been added to an explosive to enhance
its safety in handling and carriage. The phlegmatizer renders the explosive insensitive, or less
sensitive, to the following actions: heat, shock, impact, percussion or friction. Typical phlegmatizing
agents include, but are not limited to: wax, paper, water, polymers (such as chlorofluoropolymers),
alcohol and oils (such as petroleum jelly and paraffin).
Any substance or article having or suspected of having explosive properties shall be considered for
assignment to Class 1 in accordance with the tests, procedures and criteria prescribed in Part I,
Manual of Tests and Criteria.
A substance or article assigned to Class 1 can only be accepted for carriage when it has been assigned
to a name or n.o.s. entry listed in Table A of Chapter 3.2 and meets the criteria of the Manual of Tests
The substances and articles of Class 1 shall be assigned to a UN Number and a name or n.o.s. entry
listed in Table A of Chapter 3.2. Interpretation of the names of substances and articles in Table A of
Chapter 3.2 shall be based upon the glossary in 126.96.36.199.
Samples of new or existing explosive substances or articles carried for purposes including: testing,
classification, research and development quality control, or as a commercial sample, other than
initiating explosive, may be assigned to UN No. 0190 SAMPLES, EXPLOSIVE.
The assignment of explosive substances and articles not mentioned by name as such in Table A of
Chapter 3.2 to an n.o.s entry of Class 1 or UN No. 0190 SAMPLES, EXPLOSIVE as well as the
assignment of certain substances the carriage of which is subject to a specific authorization by the
competent authority according to the special provisions referred to in Column (6) of Table A of
Chapter 3.2 shall be made by the competent authority of the country of origin. This competent
authority shall also approve in writing the conditions of carriage of these substances and articles. If
the country of origin is not a Contracting Party to ADR, the classification and the conditions of
carriage shall be recognized by the competent authority of the first country Contracting Party to ADR
reached by the consignment.
Substances and articles of Class 1 shall have been assigned to a division in accordance with 188.8.131.52.5
and to a compatibility group in accordance with 184.108.40.206.6. The division shall be based on the results of
the tests described in 2.3.0 and 2.3.1 applying the definitions in 220.127.116.11.5. The compatibility group
shall be determined in accordance with the definitions in 18.104.22.168.6. The classification code shall
consist of the division number and the compatibility group letter.
Definition of divisions
Division 1.1 Substances and articles which have a mass explosion hazard (a mass explosion is
an explosion which affects almost the entire load virtually instantaneously).
Division 1.2 Substances and articles which have a projection hazard but not a mass explosion
Division 1.3 Substances and 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:
(a) combustion of which gives rise to considerable radiant heat; or
(b) which burn one after another, producing minor blast or projection effects
Division 1.4 Substances and articles which present only a slight risk of explosion in the event
of ignition or initiation during carriage. The effects are largely confined to the
package and no projection of fragments of appreciable size or range is to be
expected. An external fire shall not cause virtually instantaneous explosion of
almost the entire contents of the package.
Division 1.5 Very insensitive substances having a mass explosion hazard which are so
insensitive that there is very little probability of initiation or of transition from
burning to detonation under normal conditions of carriage. As a minimum
requirement they must not explode in the external fire test.
Division 1.6 Extremely insensitive articles which do not have a mass explosion hazard. The
articles predominantly contain extremely insensitive substances and demonstrate
a negligible probability of accidental initiation or propagation.
NOTE: The risk from articles of Division 1.6 is limited to the explosion of a
Definition of compatibility groups of substances and articles
A Primary explosive substance.
B Article containing a primary explosive substance and not having two or more effective
protective features. Some articles, such as detonators for blasting, detonator assemblies for
blasting and primers, cap-type, are included, even though they do not contain primary
C Propellant explosive substance or other deflagrating explosive substance or article containing
such explosive substance.
D Secondary detonating explosive substance or black powder or article containing a secondary
detonating explosive substance, in each case without means of initiation and without a
propelling charge, or article containing a primary explosive substance and having two or more
effective protective features.
E Article containing a secondary detonating explosive substance, without means of initiation,
with a propelling charge (other than one containing a flammable liquid or gel or hypergolic
F Article containing a secondary detonating explosive substance with its own means of initiation,
with a propelling charge (other than one containing a flammable liquid or gel or hypergolic
liquids) or without a propelling charge.
G Pyrotechnic substance, or article containing a pyrotechnic substance, or article containing both
an explosive substance and an illuminating, incendiary, tear- or smoke-producing substance
(other than a water-activated article or one which contains white phosphorus, phosphides, a
pyrophoric substance, a flammable liquid or gel or hypergolic liquids).
H Article containing both an explosive substance and white phosphorus.
J Article containing both an explosive substance and a flammable liquid or gel.
K Article containing both an explosive substance and a toxic chemical agent.
L Explosive substance or article containing an explosive substance and presenting a special risk
(e.g. due to water activation or the presence of hypergolic liquids, phosphides or a pyrophoric
substance) necessitating isolation of each type.
N Articles predominantly containing extremely insensitive substances.
S Substance or article so packed or designed that any hazardous effects arising from accidental
functioning are confined within the package unless the package has been degraded by fire, in
which case all blast or projection effects are limited to the extent that they do not significantly
hinder or prevent fire-fighting or other emergency response efforts in the immediate vicinity of
NOTE 1: Each substance or article, packed in a specified packaging, may be assigned to one
compatibility group only. Since the criterion of compatibility group S is empirical, assignment to this
group is necessarily linked to the tests for assignment of a classification code.
NOTE 2: Articles of compatibility groups D and E may be fitted or packed together with their own
means of initiation provided that such means have at least two effective protective features designed
to prevent an explosion in the event of accidental functioning of the means of initiation. Such articles
and packages shall be assigned to compatibility groups D or E.
NOTE 3: Articles of compatibility groups D and E may be packed together with their own means of
initiation, which do not have two effective protective features (i.e. means of initiation assigned to
compatibility group B), provided that they comply with mixed packing provision MP21 of Section
4.1.10. Such packages shall be assigned to compatibility groups D or E.
NOTE 4: Articles may be fitted or packed together with their own means of ignition provided that the
means of ignition cannot function during normal conditions of carriage.
NOTE 5: Articles of compatibility groups C, D and E may be packed together. Such packages shall
be assigned to compatibility group E.
Assignment of fireworks to divisions
Fireworks shall normally be assigned to divisions 1.1, 1.2, 1.3, and 1.4 on the basis of test data
derived from Test Series 6 of the Manual of Tests and Criteria.
(a) waterfalls giving a positive result when tested in the HSL Flash composition test in Appendix 7
of the Manual of Tests and Criteria shall be classified as 1.1G regardless of the results of Test
(b) since the range of such articles is very extensive and the availability of test facilities may be
limited, assignment to divisions may also be made in accordance with the procedure in