VACUUBRAND PC 600 LAN NT - Manual (Page 76)

page 76 of 102
List of solvents
Solvent
Boiling point
at 760 Torr
(1013 mbar)
in °F (°C)
Vacuum for
boiling point
(abs.) at T
S
=
104°F (40°C)
in Torr (mbar)
Solvent
Boiling point
at 760 Torr
(1013 mbar)
in °F (°C)
Vacuum for
boiling point
(abs.) at T
S
=
104°F (40°C)
in Torr (mbar)
Acetone 133 (56) 417 (556) Ethyl acetate 171 (77) 180 (240)
Acetonitrile 180 (82) 173 (230)
1,2-Dichloro-
ethane
181 (83) 158 (210)
Benzene 176 (80) 177 (236) Hexane 156 (69) 251 (335)
t-Butanol 180 (82) 98 (130) Methanol 147 (64) 253 (337)
1-Butanol 244 (118) 19 (25) Pentane 97 (36) >750 (1000)
Chloroform 144 (62) 356 (474) Isopropanol 180 (82) 103 (137)
Cyclohexane 178 (81) 176 (235) Pyridine 239 (115) 45 (60)
Dichlorometh-
ane
104 (40) 750 (1000)
Tetrachlo-
romethane
171 (77) 203 (271)
Diethyl ether 95 (35) >750 (1000) Tetrahydro-
furan
151 (66) 268 (357)
Diisopropyl
ether
154 (68) 281 (375) Toluene 232 (111) 58 (77)
Dimethylform-
amide
307 (153) 8 (11)
Trichloroeth-
ylene
189 (87) 137 (183)
1,4-Dioxane 214 (101) 80 (107) Xylene 280 (138) 19 (25)
Ethanol 167 (75) 131 (175) Water 212 (100) 54 (72)
Determine the bath temperature
+
If there is no limitation from the product side, a water bath tempera-
ture of 140-158°F (60-70°C) is usually recommended (efficient heating
with minimum generation of water vapor from the bath).
Example:
+
The cooling temperature is assumed to be 59-68°F (15-20°C).
+
Water bath temperature between 140-158°F (60-70°C). Wait until tem-
perature is reached.
+
Determine the vacuum level for a boiling point (use published data of sol-
vents). Reduce pressure until a sufficient level of evaporation is attained.
+
If the hysteresis is set manually, avoid frequent operation of the vac-
uum pump or of an optional in-line valve (approx. not more than two
operations per minute).
The above given temperature and pressure values are only of approxi-
mative nature (due to rounding, unit conversion).