hood or ventilating duct. Care must also
be taken to prevent ignition by a static
charge from an insulated object.
The hazards involved in performing
pressure reactions in glass bottles are
minimized in these reactors by using care-
fully selected and pressure tested bottles
within steel shielding. In spite of these
precautions, a bottle will sometimes break
below its rated pressure. The users must
be constantly aware of this hazard and
take whatever additional precautions they
consider necessary to protect themselves
and others from injury in case a bottle
should unexpectedly fail.
All catalysts must be handled cautious-
ly because of their highly reactive nature.
Although virgin metal catalysts are gener-
ally safe themselves, care must be taken
when they are brought into contact with
organic liquids or combustible vapors in
the presence of oxygen because of their
ability to promote rapid oxidation. Any
catalyst that has been exposed to hydro-
gen is also potentially hazardous and may
ignite spontaneously as it dries. For this
reason, used catalysts must always be
kept wetted and out of contact with com-
bustible vapors or solids.
HEATING MANTLES
Mantle No.
Watts
Volts
Use with Bottle No.
A450EEB
100
115
66CA, 66CA2
A450EEE
100
230
66CA, 66CA2
A451EEB
200
115
71CA, 72CA, 72CA4, A129CA3
A451EEE
200
230
71CA, 72CA, 72CA4, A129CA3
A451EEB Heating Mantle
A450EEB Heating Mantle
Bottle Heaters
Although a heater is not required for
many of the reactions conducted in these
hydrogenators, wrapping an electric heat-
ing mantle around the bottle can develop
bottle temperatures up to 80 °C. Glass
fabric mantles for this purpose are avail-
able in two sizes:
These mantles have an adjustable
strap so that a tight fit can be secured
around any of the listed bottle sizes. A
heater cord and plug are provided so that
the electrical connection can be made by
simply running the cord through the top
of the bottle holder and plugging it into a
Parr 4833 Temperature Controller. Heating
mantles do not work well on bottles that
have been covered with fiberglass. They
work best on plain glass and stainless
steel bottles.
S e r i e s 3 9 0 0 H y d r o g e n a t i o n A p p a r a t u s
B u l l e t i n 3 9 0 0
7
1 - 8 0 0 - 8 7 2 - 7 7 2 0
