Potassium chlorate 80
Trinitro-toluene 10
Liquid mono- and dinitro-toluenes gelatinised }
with 5 per cent. collodion cotton } 10
=BARKING POWDER.=--A mixture of ammonium perchlorate and
nitrated naphthalene, formerly used in coal mines.
=BAUTZENER SICHERHEITSPULVER.=--A German coal-mine explosive
containing not less than 70 per cent. of ammonium nitrate, barium
nitrate, and not more than 15 per cent. of trinitro-toluene.
=BAVARIT.=--A German coal-mine explosive similar to Grisounite.
It contains 90 per cent. of ammonium nitrate together with nitrated
naphthalene; charcoal may be added.
=BELLITE= is essentially a mixture of ammonium nitrate and
metadinitro-benzene. It has been used extensively as a coal-mine
explosive, and was patented by C. Lamm of Stockholm in 1885. Two
varieties passed the Woolwich Test and were on the old Permitted
List--
No. 1. No. 3.
Ammonium nitrate 83·5 93·5
Dinitro-benzene 16·5 6·5
No. 1 contains just enough oxygen for complete combustion, and No.
3 contains a large excess of oxygen. To enable the explosive to
pass the Rotherham Test sodium chloride has been added. There were
four varieties on the present Permitted List, but all except the
following, No. 1, have been repealed--
No. 1.
_Date of Permit_ 3-2-16
Ammonium nitrate 63·5
Dinitro-benzene 15
Sodium chloride 16·5
Starch 5
Limit charge 20
Power (swing of ballistic
pendulum) 2·74
=BENTAL COAL POWDER.=--An American coal-mine explosive on the
Permissible List. It is an ammonium nitrate explosive.
=BITUMINITE.=--There are several coal-mine explosives of this
name on the American Permissible List. Nos. 1, 3, 4 and 8 L.F. are
nitroglycerine explosives. No. 5 is an ammonium nitrate explosive.
=BLACK DIAMOND.=--There are several coal-mine explosives of this
name on the American Permissible List. Nos. 2A, 3A and 6 L.F. are
nitroglycerine explosives, whereas Nos. 5, 7 and 8 are ammonium
nitrate explosives.
=BLACK POWDER= is a name for ordinary gunpowder, a mixture of
potassium nitrate, sulphur and charcoal.
=BLASTINE= is a high explosive having approximately the
composition--
Ammonium perchlorate 60
Sodium nitrate 23
Dinitro-toluene 11
Paraffin wax 6
As the sodium nitrate in the above is not equivalent to the ammonium
perchlorate, part of the chlorine is given off in the form of the
poisonous gas, hydrogen chloride (hydrochloric acid).
=BLASTING GELATINE.=--Nitroglycerine, stiffened by having
collodion cotton dissolved in it. Discovered by Nobel in 1875. It
contains about--
Nitroglycerine 93
Collodion cotton 7
and also often a fraction of a percentage of calcium or magnesium
carbonate to increase its stability. This is the most powerful of all
the explosives in common use.
=BOBBINITE.=--The only explosive of the gunpowder class the
use of which is permitted in coal mines in England. In most foreign
countries explosives of this class are not allowed to be used in them
at all. The permission is only temporary, but has been extended to
the end of 1920, and is restricted to mines that are not gassy or
dangerous from coal dust. There are two definitions, but the second
is the one that is generally manufactured apparently--
First. Second.
Potassium nitrate 63·5 65
Charcoal 18·5 20
Sulphur 2 2
Sulphates of ammonium and copper 15 --
Rice or maize starch -- 9
Paraffin wax -- 3
Moisture 1 1
More than a million pounds of this explosive are used in coal mines
every year. It shatters the coal less than high explosives do.
=BOMLIT.=--A German potassium perchlorate blasting explosive
made by Wolff et Cie. at Walsrode. It contains also ammonium nitrate,
trinitro-toluene and guncotton. Other ingredients that may be present
are potassium and sodium nitrates, starch meal, vaseline, naphthalene
and other hydrocarbons, charcoal and castor oil.
=BRITONITE.=--A coal-mine explosive of the Carbonite type, made
by the British Explosives Syndicate, Ltd., Pitsea. The original
composition passed the Woolwich Test and was on the list of Permitted
Explosives, but on the introduction of the Rotherham Test it became
necessary to add ammonium oxalate or sodium chloride. Nos. 2 and 3
were on the Permitted List, but have now been repealed.
No. 2. No. 3.
_Date of Permit_ 1-9-13 28-1-15
Nitroglycerine 26 24 24·5
Sodium nitrate -- -- 28
Potassium nitrate 32·7 30 --
Wood meal 41 38 35·5
Sodium carbonate 0·3 -- --
Ammonium oxalate -- 8 --
Sodium chloride -- -- 12
Limit charge -- 24 24 oz.
Power (swing of ballistic
pendulum) -- 2·26 2·17”
=BROWN POWDER.= See =COCOA POWDER=.
=BRUGÈRE’S POWDER= consisted of--
Ammonium picrate 54
Potassium nitrate 46
It was stated to give good results in the Chassepôt rifle, but
picrate mixtures are liable to detonate, and are therefore dangerous
to use as propellants.
=BULL DOG= Gunpowder Pellets were used in coal mines. They
contained the same constituents as Bobbinite, which superseded them,
but in different proportions.
Explosifs =C= were mixtures of ammonium cresylate with ammonium
or sodium nitrate. They were made in France at one time, but their
manufacture was dropped, as they were more expensive to make than
Grisounite, and no more powerful.
=CAHUECIT.=--This was invented in the ’seventies of the last
century by R. Cahuc, and was manufactured at Dartford in Kent under
the name of Safety Blasting Powder or Carboazotine. It is still made
in Germany. The ingredients are--
English. German.
Potassium nitrate 64 70
Sulphur flowers 12 12
Lampblack or soot 7 8
Bark or wood pulp 17 10
to which are added a few per cent. of sulphate of iron. The
incorporation is carried out with the assistance of a considerable
quantity of water, which is afterwards evaporated off. The mixing is
not very thorough. The explosive is a comparatively mild one, but
is used sometimes for blasting basalt. In the German explosive the
potassium nitrate may be replaced by the corresponding sodium salt.
=AMMONCAHUECIT.=--In this explosive the potassium nitrate is
replaced mainly or wholly by ammonium nitrate, and it contains not
more than 15 per cent. of trinitro-toluene or trinitro-naphthalene or
other nitro-body.
The brand labelled “Fram” contains ammonium nitrate, not more than 25
per cent. of trinitro-toluene gelatinised with 4 per cent. collodion
cotton, wood meal or other vegetable meal and neutral stable salts.
The brand “Indra” is similar, except that it contains also not
more than 10 per cent. potassium nitrate, and the percentage of
trinitro-toluene may be raised to 20.
=CAMBRITE= is a coal-mine explosive of the Carbonite type made
by Nobels at Ardeer. It consists practically of Nobel Carbonite, to
which 8 per cent. of a cooling agent has been added. Unlike most of
the explosives on the old Permitted List, it passed the Rotherham
Test with practically no alteration--
Cambrite. No. 2.
_Date of Permit_ 1-9-13 1-4-15
Nitroglycerine 23 23
Barium nitrate 4 4
Potassium nitrate 27·5 27·5
Wood meal 37·2 37
Calcium carbonate 0·3 0·5
Ammonium oxalate 8 --
Potassium chloride -- 8
Limit charge 30 24 oz.
Power (swing of ballistic
pendulum) 1·98 2·00”
Only No. 2 is now on the Permitted List.
=CAMERON MINE POWDER.=--There are a number of coal-mine explosives
of this name on the American Permissible List. Nos. 1A, 2A and 2A
LF are ammonium nitrate explosives, whereas Nos. 3A and 5A are
nitroglycerine explosives.
=*CANNONITE= was a smokeless powder made by a firm called the
War and Sporting Smokeless Powder Syndicate, Ltd. It consisted
of about 86 per cent. of nitrocellulose mostly insoluble in
ether-alcohol, and a few per cent. of barium nitrate, together
with small quantities of some of the following: potassium nitrate,
charcoal, lampblack, vaseline, rosin, stearine, dinitro-benzene,
trinitro-toluene, potassium ferro-cyanide, graphite. For shot-guns
the powder was of the forty-two grain type, dense and gelatinised.
The rifle powder was colloidal. These powders were made in the
’nineties of the last century.
=CARBITE D’ABLON= is a sort of Carbonite made in France--
Nitroglycerine 26
Potassium nitrate 33
Wood meal or flour 41
=CARBOAZOTINE.= See =CAHUECIT=.
=CARBO-DYNAMITE= was an explosive patented by W. D. Borland.
It differed from ordinary dynamite in that the nitroglycerine was
absorbed in cork charcoal instead of kieselguhr. One part of the
charcoal sufficed to absorb nine parts of nitroglycerine.
=CARBONITE= (or Karbonit) was one of the earliest and one of
the most successful coal-mine explosives. It was first made by
Bichel and Schmidt at Schlebusch in Germany in 1885, and after some
modifications gave satisfactory results at the Neunkirchen testing
station in 1887. It contains about 26 per cent. of nitroglycerine,
33 per cent. of a nitrate, and 40 per cent. of wood meal or starch
flour, and small quantities of other substances. Nobel Carbonite
passed the Woolwich Test and had the composition--
Nitroglycerine 26
Barium nitrate 4
Potassium nitrate 29
Wood meal 40·5
“Sulphuretted benzol” 0·25
Sodium and calcium carbonates 0·25
The Carbonite made at the works of the Carbonite Syndicate at
Schlebusch, and imported into Great Britain, was practically the
same as this, but they also made another explosive which passed
the Woolwich Test, and contained 35 per cent. of nitroglycerine
gelatinised with nitrocotton, and smaller proportions of nitrates
and wood meal than are given above: this was called Extra-Carbonite.
They have also made explosives to numerous modifications of this
formula for use on the Continent. The essential feature of all of
them is that they contain so much of the combustible constituents,
such as wood meal, that most of the carbon appears in the products
of explosion as carbon monoxide, and the temperature of the gases is
consequently low.
Nobels at Ardeer also made a low freezing explosive in
which part of the nitroglycerine was replaced by a nitro-compound.
This was called Arctic Carbonite--
Nitroglycerine 15·5
Nitro-hydrocarbon 10·5
Potassium nitrate 42
Wood meal 31·7
Calcium carbonate 0·3
Various manufacturers have made explosives of the type of Carbonite
and placed them on the market under different names, such as Tutol,
Kolax, Kohlen-Carbonite, Minite and Colinite. These, however, do not
pass the Rotherham Test for Permitted Explosives, unless ammonium
oxalate or other cooling agent be added, as in the case of Cambrite,
Super-Kolax and Britonite No. 2.
On the Continent, explosives similar to Arctic Carbonite have been
produced under the names Antigel de Sûreté and Ingélite.
There are several Carbonites on the American Permissible List. Of
these Nos. 1 to 4 are in order of diminishing violence: Nos. 5 and
6 are low freezing varieties. There are also a number of other
explosives of the Carbonite type on the List.
Ammonkarbonit is a German coal-mine explosive, containing about 80
per cent. of ammonium nitrate and 4 per cent. of blasting gelatine,
together with 5 or 10 per cent. of potassium nitrate, and a
combustible such as flour, starch or coal dust. Sodium or potassium
chloride may be added as a cooling agent. It has been used for
blasting clay.
Gelatine-Karbonit is a Carbonite containing ammonium nitrate, and a
considerable proportion of nitroglycerine gelatinised with collodion
cotton.
Halokarbonit is similar to Ammonkarbonit, except that a considerable
proportion of the ammonium nitrate is replaced by other nitrates.
=CARLSONITE= was the first ammonium perchlorate explosive
submitted to H.M. Inspectors of Explosives. It was proposed in 1898
by Carlson of Stockholm, and some of the mixtures were reported on
favourably, but no licence was ever taken out in the United Kingdom
for this explosive.
=C.E.= (Composition Exploding) is the same as Tetryl.
=CELTITE= was a coal-mine explosive made by Dr. R. Nahnsen &
Co., Hamburg, and formerly permitted for use in British coal mines,
having passed the Woolwich Test.
Nitroglycerine 57
Nitrocotton 3
Potassium nitrate 19
Wood meal 9
Ammonium oxalate 12
It was also called Zeltit.
=*CENTRALITE= is not an explosive, but is a name given
to a substance which has been used to modify the surface of
smokeless powder, and make it burn progressively. The substance is
dimethyl-diphenyl-urea. (See Brit. Pat. 29,882 of 1909.) It acts also
as a stabiliser.
=CHEDDITE= is a chlorate explosive which has been rendered less
sensitive by having the particles of chlorate coated with castor oil
or paraffin wax. It is manufactured by the French Government at the
Vonges Powder Works, and has also been made in other countries. The
two types that have been most used in France are--
O2 or No. 4. O5 or No. 1.
Potassium chlorate 79 --
Sodium chlorate -- 79
Castor oil 5 5
Mononitro-naphthalene 1 --
Dinitro-toluene 15 16
=*CHEESA STICKS= are sticks of cordite coated with powdered
ammonium oxalate and shellac. They are used in South Africa as
fuses for blasting charges. They are authorised in England only for
manufacture and immediate export.
=*CHILWORTH SMOKELESS POWDER.= See =C.S.P.=
=*CHILWORTH SPECIAL POWDER.= See =AMIDE POWDER=.
=CHLORATIT= is an Austrian explosive, which was permitted for
use in coal mines during the War.
=CHLORATZIT.=--A German explosive containing potassium chlorate or
perchlorate, aromatic nitro-bodies, resins and carbohydrates. For use
in coal mines neutral salts are added as cooling agents, and the name
then has =WETTER= or =KOHLEN= prefixed to it.
=CHROMAMONIT= was a coal-mine explosive formerly made in Germany--
Ammonium nitrate 63·25
Potassium nitrate 17·5
Collodion cotton 9·25
Chromium ammonium alum 9·5
Vaseline 0·5
=*CLERMONITE.=--A Belgian shot-gun powder made by the Cooppal
Co. It is a 40-grain fibrous powder of the bulk type and coloured
green.
=CLIFFITE= was a coal-mine explosive made by Curtis’s and
Harvey, and formerly on the Permitted List--
Nitroglycerine 47
Collodion cotton 3
Starch 50
=SUPER-CLIFFITE= differs considerably from this. There are two
formulæ which have passed the Rotherham Test, but only No. 2 is still
on the Permitted List--
No. 1. No. 2.
_Date of Permit_ 21-9-16 21-9-16
Nitroglycerine 9·5 9·5
Collodion cotton 0·5 0·5
Ammonium nitrate 59 59·5
Wood meal 6 6
Sodium chloride 15 19·5
Ammonium oxalate 10 5
Limit charge 26 30 oz.
Power (swing of ballistic
pendulum) 2·53 2·53”
=CLYDITE= was a coal-mine explosive formerly made by Nobels at
Ardeer. It was similar to Nobel Carbonite, but the potassium nitrate
was replaced by the barium salt, and it might contain up to 8 per
cent. of ammonium oxalate.
=COALITE.=--There is a series of coal-mine explosives of this
name on the American Permissible List. Varieties X, 3X, and 3XC
are ammonium nitrate explosives; whereas 1, 2D, 2DL and 2MLF are
nitroglycerine explosives.
=COAL SPECIAL= are American coal-mine explosives on the
Permissible List. They are all nitroglycerine explosives.
=COCOA POWDER= or Brown Powder was a variety of gunpowder made
with a brown charcoal prepared from straw--
Potassium nitrate 79
Sulphur 3
Straw charcoal 18
It was compressed to a density of 1·8 into prisms or grains of
considerable size, and was used in guns of large calibre. E.X.E. and
S.B.C. were special varieties of this.
=COLINIT ANTIGRISOUTEUSE.=--A Belgian coal-mine explosive of the
Carbonite type. The ordinary formula is practically the same as that
of Kohlencarbonite and Minerite. Type B consists of--
Blasting gelatine 26
Potassium perchlorate 6
Ammonium nitrate 20
Trinitro-toluene 12
Rye flour and cellulose 29
Magnesium sulphate 7
=COLLIER POWDER.=--There are a number of coal-mine explosives
of this name on the American Permissible List. Varieties BNF, KN,
X, XLF, 5, 5LF, 5 Special, 9, 11, and 11LF are ammonium nitrate
explosives whereas 2 and 6LF are nitroglycerine explosives.
=COLLODION COTTON= is a variety of nitrocotton of low nitration,
almost completely soluble in a mixture of ether and alcohol. It
contains not more than 12·3 per cent. of nitrogen. It also dissolves
in nitroglycerine and liquid nitro-compounds, rendering them
gelatinous and so preventing their exudation.
=*COOPPAL’S POWDER.=--A Belgian smokeless shot-gun powder.
Formerly it was much the same as Schultze Powder, consisting of
nitrolignin carefully purified, and mixed with nitrates with or
without the addition of starch. The following analyses were published
in “Arms and Explosives” for July 1917--
No. 1. No. 2.
1892. 1900.
Fibrous Gelatinised
42-grain 30-grain
bulk. dense.
Nitrocellulose, insoluble 13·0 71·1
” soluble 60·5 20·1
Metallic nitrates 21·3 2·0
Shellac 3·2 --
Nitro-hydrocarbons -- 5·5
Moisture 2·0 1·3
=CORDITE= is the principal smokeless powder of the British
Services. It was originally adopted in 1888, and is made by mixing
nitroglycerine with guncotton and mineral jelly (a sort of crude
vaseline), and incorporating them together with the aid of acetone,
which gelatinises the guncotton. In consequence of the severe erosion
of the guns experienced during the South African War the proportions
were altered, some of the nitroglycerine being replaced by guncotton.
The propellant thus “modified” is called Cordite M.D., whereas that
of the original composition is Cordite Mk.I. Both are still in use,
especially M.D.--
Mk. I. M.D.
Guncotton 37 65
Nitroglycerine 58 30
Mineral jelly 5 5
During the great European War a further variety was introduced to
extend the basis of supply of solvents. This is called Cordite R.D.B.
(Research Department B), and contains a nitrocotton of comparatively
low nitration that can be gelatinised by means of a mixture of ether
and alcohol--
Nitrocotton 52
Nitroglycerine 42
Mineral jelly 6
It is designed to give about the same ballistics as Cordite M.D. A
further letter is sometimes added to show the form of the powder.
Thus Cordite M.D.T. is M.D. pressed into tubes; S. stands for strip.
The size is indicated by a numeral, which shows the diameter in
hundredths of an inch of the die through which it has been pressed.
In the case of tubular powder both the external and internal
diameters are given approximately: _e. g._ Cordite M.D.T. 5-2.
Poudre blanche =CORNIL=.--A Belgian coal-mine explosive
containing ammonium nitrate, potassium or sodium nitrate,
dinitro-naphthalene and lead chromate, with or without the addition
of ammonium chloride.
=CORNISH POWDER.=--A coal-mine explosive which passed the
Woolwich Test and was formerly on the Permitted List, made by the
National Explosives Co., Ltd.--
Nitroglycerine 55
Nitrocotton 3
Potassium nitrate 18
Wood meal 7
Magnesium sulphate 17
=CORONITE= was a coal-mine explosive of the Carbonite type,
which was on the Permitted List at one time. It had also been called
Permittite.
Picric acid has been called by this name in Sweden.
See also =KORONIT=.
=COSILIT.=--A German coal-mine explosive of the Carbonite type
made by Nahnsen. A published analysis gives its composition as--
Nitroglycerine 30
Sodium nitrate 22·3
Vegetable meal 40·5
Sodium chloride 7·2
=COTTON POWDER.= See =TONITE=, also =CP=.
=CP_1= and =CP_2= are varieties of nitrocotton (Coton Poudre) made
in France, principally for the manufacture of Poudre B and other
smokeless powders. CP_1 is a guncotton containing about 13 per
cent. of nitrogen, and only about 10 per cent. of matter soluble in
ether-alcohol. CP_2 is almost completely soluble in ether-alcohol,
and contains about 12 per cent. of nitrogen.
=CRÉSYLITE.=--A French high explosive used for filling shell and
other military purposes. Crésylite 60/40 consists of picric acid and
nitrated cresol in about the proportions of 40 of the former to 60
of the latter. It melts below the temperature of boiling water. The
nitrated cresol consists largely of trinitro-metacresol.
Crésylite No. 2 is simply crude trinitro-meta-cresol.
=CRONITE= is an American coal-mine explosive. There are two
varieties on the Permissible List, Nos. 1 and 5, both of which are
ammonium nitrate explosives.
=*CRYSTAL= is a smokeless shot-gun powder made by Curtis’s and
Harvey. It is a non-solvent powder for cheap loading, and the charge
is thirty-three grains.
=C.S.P.^2= (Chilworth Smokeless Powder, No. 2) is a modification
of Cordite, containing a little sodium bicarbonate as a stabiliser.
It is stated to have been adopted by the Brazilian navy (see
“Engineering” for August 18, 1911, p. 237) and other powers.
=CUGNITE.=--A French blasting explosive manufactured by the
Société Française des Explosifs--
Nitroglycerine 27
Nitrocotton 0·7
Ammonium nitrate 30
Sodium nitrate 30
Wood meal 11
Barium sulphate 1·3
=CURTISITE.=--A coal-mine explosive of the Grisounite class made
by Curtis’s and Harvey. It was formerly on the Permitted List--
Ammonium nitrate 88
Trinitro-toluene 8
Mononitro-naphthalene 4
=SUPER-CURTISITE= was a modification of the above to enable it
to pass the Rotherham Test--
_Date of Permit_ 7-4-14
Ammonium nitrate 38·5
Potassium nitrate 29·5
Trinitro-toluene 10
Ammonium chloride 22
Limit charge 16 oz.
Power (swing of
ballistic pendulum) 2·71”
The permit has been repealed.
=DAHMENITE= is an ammonium nitrate explosive which has been used
to a considerable extent in Germany. One variety known as Dahmenite
A, made by De Gezamenlijke Buskruidmakers van Noord-Holland, was
formerly on the British Permitted List for use in dangerous coal
mines--
Ammonium nitrate 92·5
Naphthalene 5·5
Potassium bichromate 2
Ordinary Dahmenite contains up to 15 per cent. of potassium nitrate
instead of bichromate, and has been used for blasting clay. Some
varieties contain curcuma meal and other constituents. The following
are some examples--
Gesteins-
Dahmenit. No. 76.
Ammonium nitrate 84·5 71·5
Potassium bichromate 2·5 0·5
Curcuma meal 12 6·25
Dinitro-benzene 1 --
Trinitro-toluene -- 12
Sodium chloride -- 9·75
Gelatine
Dahmenit.
Ammonium nitrate 82
Sodium nitrate 5·5
Potassium nitrate 2
Dinitro-glycerine 27·4
Nitrocotton 0·6
Naphthalene 0·5
Trinitro-toluene 4·5
Alkali chloride 27·5
Neu-Dahmenit.
B
Ammonium nitrate 68 65
Potassium nitrate 2 2
Vegetable meal 2·5 0·5
Coke 2 7
Trinitro-toluene 10 8
Alkali chloride 15·5 17·5
=DENABY POWDER.=--There was formerly a blasting explosive
of this name, consisting of a compressed mixture of Securite and
charcoal--
Potassium and barium nitrates 73·2
Dinitro-benzene 21·5
Nitrocotton and charcoal 5·1
Moisture 0·2
In 1914 a coal-mine explosive was introduced under the
same name and passed the Rotherham Test--
_Date of Permit_ 13-5-14
Ammonium nitrate 34
Potassium nitrate 33·5
Trinitro-toluene 13
Ammonium chloride 19·5
Limit charge 18 oz.
Power (swing of ballistic
pendulum) 2·74”
It is made by British Westfalite, Ltd.
=DENSITE.=--A Belgian blasting explosive containing one or more
of the following nitrates: ammonium, strontium, sodium, potassium;
also trinitro-toluene, and sometimes dinitro-toluene and ammonium
chloride. This explosive is practically the same as Nitralite.
Varieties have been made for use in coal mines.
See also Nitro-densite.
=DETONIT V.=--A German coal-mine explosive containing ammonium
nitrate, charcoal, vegetable meal, neutral salts, and not more than 4
per cent. of blasting gelatine.
=DETONITE SPECIAL= is an American coal-mine explosive on the
Permissible List. It contains ammonium nitrate.
=DOMINITE.=--A coal-mine explosive made by the Westphalia Anhalt
Explosives Co. in Germany, and formerly on the British Permitted
List--
Nitroglycerine 59·3
Nitrocotton 4
Paraffin oil 0·7
Ammonium oxalate 8·5
Potassium nitrate 18·5
Potassium chloride 4
Wood meal 5
=DOMINIT XI.=--A German blasting explosive containing ammonium
nitrate, dinitro-toluene, glycerine, and not more than 4 per cent. of
blasting gelatine.
=DOMINIT XVIII=, which has been introduced recently, contains up
to 10 per cent. of potassium perchlorate, and is practically the same
as Astralit V.
=DONARIT= is a German blasting explosive of the Grisoutine
type made by the Carbonite Co. of Hamburg. As a standard for the
sensitiveness of ammonium nitrate explosives, the Imperial German
Railway Commission use Donarit of the composition--
Ammonium nitrate 80
Trinitro-toluene 12
Rye flour 4
Nitroglycerine 4
and this may be taken as the usual composition of the explosive, but
the nitroglycerine is sometimes gelatinised with collodion cotton.
=DONARIT A= contains up to 16 per cent. of aluminium powder and
no nitroglycerine.
=DONARIT V=, which has been introduced recently, contains up to
10 per cent. of potassium perchlorate, and is practically the same as
Astralit V.
Wetter-Donarit contains also sodium chloride or other cooling agent.
Gelatine-Donarit contains up to 20 per cent. of dinitro-chlorhydrin
gelatinised with collodion cotton, in addition to the constituents of
Donarit, and may also contain sodium nitrate.
=DORFIT= is a German coal-mine explosive made by the
firm of Allendorf--