[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR173.59]

[Page 451-457]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 173_SHIPPERS_GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS--Table of Contents
 
     Subpart C_Definitions, Classification and Packaging for Class 1
 
Sec.  173.59  Description of terms for explosives.

    For the purpose of this subchapter, a description of the following 
terms is provided for information only. They must not be used for 
purposes of classification or to replace proper shipping names 
prescribed in Sec.  172.101 of this subchapter.
    Ammonium-nitrate--fuel oil mixture (ANFO). A blasting explosive 
containing no essential ingredients other than prilled ammonium nitrate 
and fuel oil.
    Ammunition. Generic term related mainly to articles of military 
application consisting of all types of bombs, grenades, rockets, mines, 
projectiles and other similar devices or contrivances.
    Ammunition, illuminating, with or without burster, expelling charge 
or propelling charge. Ammunition designed to produce a single source of 
intense light for lighting up an area. The term includes illuminating 
cartridges, grenades and projectiles, and illuminating and target 
identification bombs. The

[[Page 452]]

term excludes the following articles which are listed separately: 
cartridges, signal; signal devices; hand signals; distress flares, 
aerial and flares, surface.
    Ammunition, incendiary. Ammunition containing an incendiary 
substance which may be a solid, liquid or gel including white 
phosphorus. Except when the composition is an explosive per se, it also 
contains one or more of the following: a propelling charge with primer 
and igniter charge, or a fuze with burster or expelling charge. The term 
includes: Ammunition, incendiary, liquid or gel, with burster, expelling 
charge or propelling charge; Ammunition, incendiary with or without 
burster, expelling charge or propelling charge; and Ammunition, 
incendiary, white phosphorus, with burster, expelling charge or 
propelling charge.
    Ammunition, practice. Ammunition without a main bursting charge, 
containing a burster or expelling charge. Normally it also contains a 
fuze and propelling charge. The term excludes the following article 
which is listed separately: Grenades, practice.
    Ammunition, proof. Ammunition containing pyrotechnic substance, used 
to test the performance or strength of new ammunition, weapon component 
or assemblies.
    Ammunition, smoke. Ammunition containing a smoke-producing substance 
such as chlorosulphonic acid mixture (CSAM), titanium tetrachloride 
(FM), white phosphorus, or smoke-producing substance whose composition 
is based on hexachlorothannol (HC) or red phosphorus. Except when the 
substance is an explosive per se, the ammunition also contains one or 
more of the following: a propelling charge with primer and igniter 
charge, or a fuze with burster or expelling charge. The term includes: 
Ammunition, smoke, with or without burster, expelling charge or 
propelling charge; Ammunition, smoke, white phosphorus with burster, 
expelling charge or propelling charge.
    Ammunition, tear-producing with burster, expelling charge or 
propelling charge. Ammunition containing tear-producing substance. It 
may also contain one or more of the following: a pyrotechnic substance, 
a propelling charge with primer and igniter charge, or a fuze with 
burster or expelling charge.
    Ammunition, toxic. Ammunition containing toxic agent. It may also 
contain one or more of the following: a pyrotechnic substance, a 
propelling charge with primer and igniter charge, or a fuze with burster 
or expelling charge.
    Articles, explosive, extremely insensitive (Articles, EEI). Articles 
that contain only extremely insensitive detonating substances and which 
demonstrate a negligible probability of accidental initiation or 
propagation under normal conditions of transport and which have passed 
Test Series 7.
    Articles, pyrophoric. Articles which contain a pyrophoric substance 
(capable of spontaneous ignition when exposed to air) and an explosive 
substance or component. The term excludes articles containing white 
phosphorus.
    Articles, pyrotechnic for technical purposes. Articles which contain 
pyrotechnic substances and are used for technical purposes, such as heat 
generation, gas generation, theatrical effects, etc. The term excludes 
the following articles which are listed separately: all ammunition; 
cartridges, signal; cutters, cable, explosive; fireworks; flares, 
aerial; flares, surface; release devices, explosives; rivets, explosive; 
signal devices, hand; signals, distress; signals, railway track, 
explosive; and signals, smoke.
    Black powder (gunpowder). Substance consisting of an intimate 
mixture of charcoal or other carbon and either potassium or sodium 
nitrate, and sulphur. It may be meal, granular, compressed, or 
pelletized.
    Bombs. Explosive articles which are dropped from aircraft. They may 
contain a flammable liquid with bursting charge, a photo-flash 
composition or bursting charge. The term excludes torpedoes (aerial) and 
includes bombs, photo-flash; bombs with bursting charge; bombs with 
flammable liquids, with bursting charge.
    Boosters. Articles consisting of a charge of detonating explosive 
without means of initiation. They are used to increase the initiating 
power of detonators or detonating cord.
    Bursters, explosive. Articles consisting of a small charge of 
explosive to open

[[Page 453]]

projectiles or other ammunition in order to disperse their contents.
    Cartridges, blank. Articles which consist of a cartridge case with a 
center or rim fire primer and a confined charge of smokeless or black 
powder, but no projectile. Used in training, saluting, or in starter 
pistols, etc.
    Cartridges, flash. Articles consisting of a casing, a primer and 
flash powder, all assembled in one piece for firing.
    Cartridges for weapons. (1) Fixed (assembled) or semi-fixed 
(partially assembled) ammunition designed to be fired from weapons. Each 
cartridge includes all the components necessary to function the weapon 
once. The name and description should be used for military small arms 
cartridges that cannot be described as cartridges, small arms. Separate 
loading ammunition is included under this name and description when the 
propelling charge and projectile are packed together (see also 
Cartridges, blank).
    (2) Incendiary, smoke, toxic, and tear-producing cartridges are 
described under ammunition, incendiary, etc.
    Cartridges for weapons, inert projectile. Ammunition consisting of a 
casing with propelling charge and a solid or empty projectile.
    Cartridges, oil well. Articles consisting of a casing of thin fiber, 
metal or other material containing only propellant explosive. The term 
excludes charges, shaped, commercial.
    Cartridges, power device. Articles designed to accomplish mechanical 
actions. They consist of a casing with a charge of deflagrating 
explosive and a means of ignition. The gaseous products of the 
deflagration produce inflation, linear or rotary motion; activate 
diaphragms, valves or switches, or project fastening devices or 
extinguishing agents.
    Cartridges, signal. Articles designed to fire colored flares or 
other signals from signal pistols or devices.
    Cartridges, small arms. Ammunition consisting of a cartridge case 
fitted with a center or rim fire primer and containing both a propelling 
charge and solid projectile(s). They are designed to be fired in weapons 
of caliber not larger than 19.1 mm. Shotgun cartridges of any caliber 
are included in this description. The term excludes: Cartridges, small 
arms, blank, and some military small arms cartridges listed under 
Cartridges for weapons, inert projectile.
    Cases, cartridge, empty with primer. Articles consisting of a 
cartridge case made from metal, plastics or other non-flammable 
materials, in which only the explosive component is the primer.
    Cases, combustible, empty, without primer. Articles consisting of 
cartridge cases made partly or entirely from nitrocellulose.
    Charges, bursting. Articles consisting of a charge of detonating 
explosive such as hexolite, octolite, or plastics-bonded explosive 
designed to produce effect by blast or fragmentation.
    Charges, demolition. Articles consisting of a charge of detonating 
explosive in a casing of fiberboard, plastics, metal or other material. 
The term excludes articles identified as bombs, mines, etc.
    Charges, depth. Articles consisting of a charge of detonating 
explosive contained in a drum or projectile. They are designed to 
detonate under water.
    Charges, expelling. A charge of deflagrating explosive designed to 
eject the payload from the parent article without damage.
    Charges, explosive, without detonator. Articles consisting of a 
charge of detonating explosive without means of initiation, used for 
explosive welding, joining, forming, and other processes.
    Charges, propelling. Articles consisting of propellant charge in any 
physical form, with or without a casing, for use in cannon or for 
reducing drag for projectiles or as a component of rocket motors.
    Charges, propelling for cannon. Articles consisting of a propellant 
charge in any physical form, with or without a casing, for use in a 
cannon.
    Charges, shaped, without detonator. Articles consisting of a casing 
containing a charge of detonating explosive with a cavity lined with 
rigid material, without means of initiation. They are designed to 
produce a powerful, penetrating jet effect.
    Charges, shaped, flexible, linear. Articles consisting of a V-shaped 
core of a detonating explosive clad by a flexible metal sheath.

[[Page 454]]

    Charges, supplementary, explosive. Articles consisting of a small 
removable booster used in the cavity of a projectile between the fuze 
and the bursting charge.
    Components, explosive train, n.o.s. Articles containing an explosive 
designed to transmit a detonation or deflagration within an explosive 
train.
    Contrivance, water-activated with burster, expelling charge or 
propelling charge. Articles whose functioning depends of physico-
chemical reaction of their contents with water.
    Cord, detonating, flexible. Articles consisting of a core of 
detonating explosive enclosed in spun fabric with plastics or other 
covering.
    Cord (fuse) detonating, metal clad. Articles consisting of a core of 
detonating explosive clad by a soft metal tube with or without 
protective covering. When the core contains a sufficiently small 
quantity of explosive, the words ``mild effect'' are added.
    Cord igniter. Articles consisting of textile yarns covered with 
black powder or another fast-burning pyrotechnic composition and a 
flexible protective covering, or consisting of a core of black powder 
surrounded by a flexible woven fabric. It burns progressively along its 
length with an external flame and is used to transmit ignition from a 
device to a charge or primer.
    Cutters, cable, explosive. Articles consisting of a knife-edged 
device which is driven by a small charge of deflagrating explosive into 
an anvil.
    Detonator assemblies, non-electric, for blasting. Non-electric 
detonators assembled with and activated by such means as safety fuse, 
shock tube, flash tube, or detonating cord. They may be of instantaneous 
design or incorporate delay elements. Detonating relays incorporating 
detonating cord are included. Other detonating relays are included in 
Detonators, nonelectric.
    Detonators. Articles consisting of a small metal or plastic tube 
containing explosives such as lead azide, PETN, or combinations of 
explosives. They are designed to start a detonation train. They may be 
constructed to detonate instantaneously, or may contain a delay element. 
They may contain no more than 10 g of total explosives weight, excluding 
ignition and delay charges, per unit. The term includes: detonators for 
ammunition; detonators for blasting, both electric and non-electric; and 
detonating relays without flexible detonating cord.
    Dynamite. A detonating explosive containing a liquid explosive 
ingredient (generally nitroglycerin, similar organic nitrate esters, or 
both) that is uniformly mixed with an absorbent material, such as wood 
pulp, and usually contains materials such as nitrocellulose, sodium and 
ammonium nitrate.
    Entire load and total contents. The phrase means such a substantial 
portion of the material explodes that the practical hazard should be 
assessed by assuming simultaneous explosion of the whole of the 
explosive content of the load or package.
    Explode. The term indicates those explosive effects capable of 
endangering life and property through blast, heat, and projection of 
missiles. It encompasses both deflagration and detonation.
    Explosion of the total contents. The phrase is used in testing a 
single article or package or a small stack of articles or packages.
    Explosive, blasting. Detonating explosive substances used in mining, 
construction, and similar tasks. Blasting explosives are assigned to one 
of five types. In addition to the ingredients listed below for each 
type, blasting explosives may also contain inert components, such as 
kieselguhr, and other minor ingredients, such as coloring agents and 
stabilizers.
    Explosive, blasting, type A. Substances consisting of liquid organic 
nitrates, such as nitroglycerin, or a mixture of such ingredients with 
one or more of the following: nitrocellulose, ammonium nitrate or other 
inorganic nitrates, aromatic nitro-derivatives, or combustible 
materials, such as wood-meal and aluminum powder. Such explosives must 
be in powdery, gelatinous, plastic or elastic form. The term includes 
dynamite, blasting gelatine and gelatine dynamites.
    Explosive, blasting, type B. Substances consisting of a mixture of 
ammonium nitrate or other inorganic nitrates

[[Page 455]]

with an explosive, such as trinitrotoluene, with or without other 
substances, such as wood-meal or aluminum powder, or a mixture of 
ammonium nitrate or other inorganic nitrates with other combustible 
substances which are not explosive ingredients. Such explosives may not 
contain nitroglycerin, similar liquid organic nitrates, or chlorates.
    Explosive, blasting, type C. Substances consisting of a mixture of 
either potassium or sodium chlorate or potassium, sodium or ammonium 
perchlorate with organic nitro-derivatives or combustible materials, 
such as wood-meal or aluminum powder, or a hydrocarbon. Such explosives 
must not contain nitroglycerin or any similar liquid organic nitrate.
    Explosive, blasting, type D. Substances consisting of a mixture of 
organic nitrate compounds and combustible materials, such as 
hydrocarbons and aluminum powder. Such explosives must not contain 
nitroglycerin, any similar liquid organic nitrate, chlorate or ammonium-
nitrate. The term generally includes plastic explosives.
    Explosive, blasting, type E. Substances consisting of water as an 
essential ingredient and high proportions of ammonium nitrate or other 
oxidizer, some or all of which are in solution. The other constituents 
may include nitro-derivatives, such as trinitrotoluene, hydrocarbons or 
aluminum powder. The term includes: explosives, emulsion; explosives, 
slurry; and explosives, watergel.
    Explosive, deflagrating. A substance, e.g., propellant, which reacts 
by deflagration rather than detonation when ignited and used in its 
normal manner.
    Explosive, detonating. A substance which reacts by detonation rather 
than deflagration when initiated and used in its normal manner.
    Explosive, extremely insensitive detonating substance (EIDS). A 
substance which, although capable of sustaining a detonation, has 
demonstrated through tests that it is so insensitive that there is very 
little probability of accidental initiation.
    Explosive, primary. Explosive substance which is manufactured with a 
view to producing a practical effect by explosion, is very sensitive to 
heat, impact, or friction, and even in very small quantities, detonates. 
The major primary explosives are mercury fulminate, lead azide, and lead 
styphnate.
    Explosive, secondary. An explosive substance which is relatively 
insensitive (when compared to primary explosives) and is usually 
initiated by primary explosives with or without the aid of boosters or 
supplementary charges. Such an explosive may react as a deflagrating or 
as a detonating explosive.
    Fireworks. Pyrotechnic articles designed for entertainment.
    Flares. Articles containing pyrotechnic substances which are 
designed to illuminate, identify, signal, or warn. The term includes: 
flares, aerial and flares, surface.
    Flash powder. Pyrotechnic substance which, when ignited, produces an 
intense light.
    Fracturing devices, explosive, for oil wells, without detonators. 
Articles consisting of a charge of detonating explosive contained in a 
casing without the means of initiation. They are used to fracture the 
rock around a drill shaft to assist the flow of crude oil from the rock.
    Fuse/Fuze. Although these two words have a common origin (French 
fusee, fusil) and are sometimes considered to be different spellings, it 
is useful to maintain the convention that fuse refers to a cord-like 
igniting device, whereas fuze refers to a device used in ammunition 
which incorporates mechanical, electrical, chemical, or hydrostatic 
components to initiate a train by deflagration or detonation.
    Fuse, igniter. Articles consisting of a metal tube with a core of 
deflagrating explosives.
    Fuse, instantaneous, non-detonating (Quickmatch). Article consisting 
of cotton yarns impregnated with fine black powder. It burns with an 
external flame and is used in ignition trains for fireworks, etc.
    Fuse, safety. Article consisting of a core of fine-grained black 
powder surrounded by a flexible woven fabric with one or more protective 
outer coverings. When ignited, it burns at a predetermined rate without 
any explosive effect.

[[Page 456]]

    Fuzes. Articles designed to start a detonation or deflagration in 
ammunition. They incorporate mechanical, electrical, chemical, or 
hydrostatic components and generally protective features. The term 
includes: Fuzes, detonating; fuzes detonating with protective features; 
and fuzes igniting.
    Grenades, hand or rifle. Articles which are designed to be thrown by 
hand or to be projected by rifle. The term includes: grenades, hand or 
rifle, with bursting charge; and grenades, practice, hand or rifle. The 
term excludes: grenades, smoke.
    Igniters. Articles containing one or more explosive substance used 
to start deflagration of an explosive train. They may be actuated 
chemically, electrically, or mechanically. The term excludes: cord, 
igniter; fuse, igniter; fuse, instantaneous, non-detonating; fuze, 
igniting; lighters, fuse, instantaneous, non-detonating; fuzes, 
igniting; lighters, fuse; primers, cap type; and primers, tubular.
    Ignition, means of. A general term used in connection with the 
method employed to ignite a deflagrating train of explosive or 
pyrotechnic substances (for example: a primer for propelling charge, an 
igniter for a rocket motor or an igniting fuze).
    Initiation, means of. (1) A device intended to cause the detonation 
of an explosive (for example: detonator, detonator for ammunition, or 
detonating fuze).
    (2) The term with its own means of initiation means that the 
contrivance has its normal initiating device assembled to it and this 
device is considered to present a significant risk during transport but 
not one great enough to be unacceptable. The term does not apply, 
however, to a contrivance packed together with its means of initiation, 
provided the device is packaged so as to eliminate the risk of causing 
detonation of the contrivance in the event of functioning of the 
initiating device. The initiating device can even be assembled in the 
contrivance provided there are protective features ensuring that the 
device is very unlikely to cause detonation of the contrivance under 
conditions which are associated with transport.
    (3) For the purposes of classification, any means of initiation 
without two effective protective features should be regarded as 
Compatibility Group B; an article with its own means of initiation, 
without two effective protective features, is Compatibility Group F. A 
means of initiation which itself possesses two effective protective 
features is Compatibility Group D, and an article with its own means of 
initiation which possesses two effective features is Compatibility Group 
D or E. A means of initiation, adjudged as having two effective 
protective features, must be approved by the Associate Administrator. A 
common and effective way of achieving the necessary degree of protection 
is to use a means of initiation which incorporates two or more 
independent safety features.
    Jet perforating guns, charged, oil well, without detonator. Articles 
consisting of a steel tube or metallic strip, into which are inserted 
shaped charges connected by detonating cord, without means of 
initiation.
    Lighters, fuse. Articles of various design actuated by friction, 
percussion, or electricity and used to ignite safety fuse.
    Mass explosion. Explosion which affects almost the entire load 
virtually instantaneously.
    Mines. Articles consisting normally of metal or composition 
receptacles and bursting charge. They are designed to be operated by the 
passage of ships, vehicles, or personnel. The term includes Bangalore 
torpedoes.
    Powder cake (powder paste). Substance consisting of nitrocellulose 
impregnated with not more than 60 percent of nitroglycerin or other 
liquid organic nitrates or a mixture of these.
    Powder, smokeless. Substance based on nitrocellulose used as 
propellant. The term includes propellants with a single base 
(nitrocellulose (NC) alone), those with a double base (such as NC and 
nitroglycerin (NG)) and those with a triple base (such as NC/NG/
nitroguanidine). Cast pressed or bag-charges of smokeless powder are 
listed under charges, propelling and charges, propelling for cannon.
    Primers, cap type. Articles consisting of a metal or plastic cap 
containing a small amount of primary explosive

[[Page 457]]

mixture that is readily ignited by impact. They serve as igniting 
elements in small arms cartridges and in percussion primers for 
propelling charges.
    Primers, tubular. Articles consisting of a primer for ignition and 
an auxiliary charge of deflagrating explosive, such as black powder, 
used to ignite the propelling charge in a cartridge case for cannon, 
etc.
    Projectiles. Articles, such as a shell or bullet, which are 
projected from a cannon or other artillery gun, rifle, or other small 
arm. They may be inert, with or without tracer, or may contain a 
burster, expelling charge or bursting charge. The term includes: 
projectiles, inert, with tracer; projectiles, with burster or expelling 
charge; and projectiles, with bursting charge.
    Propellant, liquid. Substances consisting of a deflagrating liquid 
explosive, used for propulsion.
    Propellant, solid. Substances consisting of a deflagrating solid 
explosive, used for propulsion.
    Propellants. Deflagrating explosives used for propulsion or for 
reducing the drag of projectiles.
    Release devices, explosive. Articles consisting of a small charge of 
explosive with means of initiation. They sever rods or links to release 
equipment quickly.
    Rocket motors. Articles consisting of a solid, liquid, or hypergolic 
propellant contained in a cylinder fitted with one or more nozzles. They 
are designed to propel a rocket or guided missile. The term includes: 
rocket motors; rocket motors with hypergolic liquids with or without an 
expelling charge; and rocket motors, liquid fuelled.
    Rockets. Articles containing a rocket motor and a payload which may 
be an explosive warhead or other device. The term includes: guided 
missiles; rockets, line-throwing; rockets, liquid fuelled, with bursting 
charge; rockets, with bursting charge; rockets, with expelling charge; 
and rockets, with inert head.
    Signals. Articles consisting of pyrotechnic substances designed to 
produce signals by means of sound, flame, or smoke or any combination 
thereof. The term includes: signal devices, hand; signals, distress 
ship; signals, railway track, explosive; signals, smoke.
    Sounding devices, explosive. Articles consisting of a charge of 
detonating explosive. They are dropped from ships and function when they 
reach a predetermined depth or the sea bed.
    Substance, explosive, very insensitive (Substance, EVI) N.O.S. 
Substances which present a mass explosive hazard but which are so 
insensitive that there is very little probability of initiation, or of 
transition from burning to detonation under normal conditions of 
transport and which have passed test series 5.
    Torpedoes. Articles containing an explosive or non-explosive 
propulsion system and designed to be propelled through water. They may 
contain an inert head or warhead. The term includes: torpedoes, liquid 
fuelled, with inert head; torpedoes, liquid fuelled, with or without 
bursting charge; and torpedoes, with bursting charge.
    Tracers for ammunition. Sealed articles containing pyrotechnic 
substances, designed to reveal the trajectory of a projectile.
    Warheads. Articles containing detonating explosives, designed to be 
fitted to a rocket, guided missile, or torpedo. They may contain a 
burster or expelling charge or bursting charge. The term includes: 
warhead rocket with bursting charge; and warheads, torpedo, with 
bursting charge.

[Amdt. 173-224, 55 FR 52617 Dec. 21, 1990, as amended at 56 FR 66267, 
Dec. 20, 1991; Amdt. 173-241, 59 FR 67492, Dec. 29, 1994; 64 FR 10777, 
Mar. 5, 1999; 66 FR 45379, Aug. 28, 2001]