Technical data

Pumped liquids
24
DME
8
8. Pumped liquids
The resistance table below is intended as a general
guide for material resistance (at room temperature),
and does not replace testing of the chemicals and
pump materials under specific working conditions.
The data shown are based on information from various
sources available, but many factors (purity,
temperature, abrasive particles, etc.) may affect the
chemical resistance of a given material.
Note: Some of the liquids in this table may be toxic,
corrosive or hazardous. Please be careful when
handling these liquids.
For further information, see "Pumped Liquid Guide".
Pumped liquid (20 °C)
Materials
Dosing head Gasket Ball
Description Chemical formula
Concentration
[%]
PP PVDF SS 1.4401 FKM EPDM PTFE Ceramic
Acetic acid CH
3
COOH
25 ●●● - ●●●
60 ●●● - ❍ ●●
85 ●●● --●●
Aluminium chloride AlCl
3
40 ●● - ●●●●
Aluminium sulphate Al
2
(SO
4
)
3
60 ●●●●●●●
Ammonia, aqueous NH
4
OH 28 ●●● - ●●●
Calcium hydroxide
★ 7
Ca(OH)
2
●●●●●●●
Calcium hypochlorite Ca(OCl)
2
20 ❍ ● - ●●●●
Chromic acid
★ 5
H
2
CrO
4
10 ●●●●●●●
30 - ● - ● ❍ ●●
40 - ● - ● - ●●
50 - ● - ● - ●●
Copper sulphate CuSO
4
30 ●●●●●●●
Ferric chloride
★ 3
FeCl
3
60 ●● - ●●●●
Ferric sulphate
★ 3
Fe
2
(SO
4
)
3
60 ●●●●●●●
Ferrous chloride FeCl
2
40 ●● - ●●●●
Ferrous sulphate FeSO
4
50 ●●●●●●●
Hydrochloric acid HCl
< 25 ●● - ❍ ●●●
25-37 ●● --●●●
Hydrogen peroxide H
2
O
2
30 ●●●●●●●
Nitric acid HNO
3
10 ●●●●●●●
30 ●●●●●●●
40 ❍ ●●●●●●
70 - ●●● - ●●
Peracetic acid CH
3
COOOH 5 ●● --●●●
Potassium hydroxide KOH 50 ● - ● - ●●●
Potassium permanganate KMnO
4
10 ●●● - ●●●
Sodium chlorate NaClO
3
30 ●●●❍ ●●●
Sodium chloride NaCl 30 ●● - ●●●●
Sodium chlorite NaClO
2
20 ● ❍ - ●●●●
Sodium hydroxide NaOH
20 ● ❍ ●●●●●
30 ● - ●●●●●
50 ● - ●●●●●
Sodium hypochlorite NaOCl 20 ❍ ● - ●●●●
Sodium sulphide Na
2
S30●●●●●●●
Sodium sulphite
★ 6
Na
2
SO
3
20 ●●●●●●●
Sulphurous acid H
2
SO
3
6 ●●●●●●●
Sulphuric acid
★ 4
H
2
SO
4
< 80 ●● - ● ❍ ●●
80-98 ❍ ● - ● - ●●
● Resistant
★ 3 Risk of crystallisation. DME-B is not suitable for crystallising media.
❍ Limited resistance ★ 4 Reacts violently with water and generates much heat.
(Pump should be absolutely dry before dosing sulphuric acid.)
- Not resistant
★ 5 Must be fluoride-free when glass balls are used.
★ 6 In neutral solutions.
★ 7 Saturated solution 0.1 %.