UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Operating Instructions
Page
247
12 Reference Information
12.1 Chemical Resistance of PEEK
PEEK has superb chemical resistance to most organic solvents. However, it tends to swell
when in contact with trichlormethane (CHCl
3
), dimethyl sulfoxide (DMSO), or
tetrahydrofuran (THF). In addition, it is attacked by concentrated acids, such as, sulfuric
acid and nitric acid or a mixture of hexane, ethyl acetate, and methanol. Swelling or attack
by concentrated acids is not a problem with brief flushing procedures.
For information about the chemical resistance of PEEK, see the table.
Medium
Concentration
[%]
Temperature
Maximum
Duration
(Days)
Resistance
(+ = yes; - = no)
Acetaldehyde
techn. pure
23
+
Acetic acid
96
23
7
+
Acetone
100
23
7
+
Ammonia
28
23
7
+
Ammonium sulphate
23
+
Amyl acetate
100
23
+
Amyl alcohol
techn. pure
23
+
Benzaldehyde
23
7
+
Benzene
100
23
7
+
Benzene/Benzene mixture
60
42
+
Benzoic acid
23
+
Borax
60
+
Bromine
23
-
Butane
23
+
Butanol
100
23
+
Calcium hydroxide
23
+
Carbon dioxide
100
23
+
Carbon tetrachloride
100
23
+
Chloric gas
23
+
Chlorine (liquid)
23
-
Chlorobenzene
100
23
+
Chloroform (trichlormethane)
100
23
+
Chromic acid
40
23
+
Citric acid
23
+
Copper sulphate
23
+
Cyclohexane
100
23
+
Cyclohexanol
100
23
+
Cyclohexanone
23
+
Diethyl ether
100
23
7
+
Diisopropyl ether
100
23
+
Summary of Contents for Dionex UltiMate 3000 Series
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