Safety Instructions - IKA C 7010 Mode D'emploi

Safety instuctions
Intended purpose:
The C 7010 and C 7012 decomposition vessels must only be
used for determining the gross calorific value of solid and liquid
combustible materials in accordance with DIN 51900, BS 1016
T5, ISO 1928, ASTM 5468, ASTM 5865, and ASTM 4809.
Operation of decomposition vessels is only permitted in com-
bination with the IKA calorimeter C 7000.
Operating requirements:
The maximum amount of energy input into the decomposition
vessel must not exceed 40000 J. (Select the weight of the
sample accordingly). The permissible operating pressure of
230 bar (23MPa) must not be exceeded. The maximum per-
missible operating temperature must not exceed 50 ° C.
Do not fill the decomposition vessel too full of the sample.
Only fill the decomposition vessel with oxygen up to a maxi-
mum pressure of 40bar (4MPa). Monitor the adjusted pressu-
re on the pressure reducer.
Perform a check before every combustion to ensu-
re there are no leaks ( see the sections entitled
Leakage test).
Explosive substances:
Many substances tend to combust in an explosive manner (for
example because of the formation of peroxide). This may
cause the decomposition vessel to burst.
The C 7010 and C 7012 standard decomposition vessels must
not be used for examinations on samples that are capable of
exploding. It is absolutely essential to use a special high-pres-
sure decomposition vessel to contain the sample in these
cases!
Notes on the sample:
Substances of which the combustion behavior is not known
must be examined for their combustion behavior before com-
bustion in the decomposition vessel C 7010 and C 7012 (dan-
ger of explosion).
If you are burning unknown samples, leave the room or keep a
safe distance between you and the calorimeter.
Benzoic acid must only be burned in the form of pellets!
Combustible dust and powder must be compressed into pellets
before combustion. Oven-dry dust and powder such as wood
chips, hay, straw, etc. burn in an explosive manner! They must be
moistened first! Readily combustible liquids with a low vapor pres-
sure must not be come in direct contact with the cotton thread (for
example tetramethyl dihydrogen disiloxan)!
Combustion residue, auxiliary materials
In addition, toxic residues of combustion are possible in the form
of gasses, ash or precipitates on the inner wall of the decomposi-
tion vessel, for example.
Observe the accident prevention requirements applicable to the
activity and the work station. Wear personal safety equipment.
When handling combustion samples, combustion residues and
auxiliary materials, the appropriate safety requirements must be
observed. The following are examples of substances that may
cause dangers:
corrosive
easily flammable
capable of exploding
contaminated with bacteria
toxic
Oxygen
When working with oxygen, observe the appropriate require-
ments.
Danger warning: As a compressed gas, oxygen promotes combu-
stion, supports combustion intensively and may react violently
with combustible substances. Do not use any oil or grease!
Using a crucible made of stainless steel
When using crucibles made of stainless steel, their condition
should be carefully checked after every experiment.
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