Flexible Impeller Chemical Compatibility
Flexible Impeller Pump Chemical Compatibility
The below table details the chemical compatibility of various rubber impellers with the respective fluid. When checking chemical compatibility two features are of critical importance, which are the temperature of the chemical and the concentration.
Chemical Compatabilty is one of a handful of checks which need to be checked before a selection is made.
The pumping speed, viscosity, NPSH Available and liquid properties must also be checked, and we encourage all customers to discuss their application with our Technical Sales Engineers.
The temperatures detailed must be treated as the highest temperature that can be used with the impeller. The temperature of 20ׄ°C is typical of an average room temperature.
The term "Variable" means that within the same family of polymers there can be different behaviors according to the kind of polymer, the concentration of the chemical and the temperature at which it is used.
RATING | A | B | C | V | Nd |
Excellent | Fair/Good | Poor / Do Not Use | Variable | Information not available |
Fluid | NBR | EPDM | CR | NB | VQM |
Ammonium hydroxide (38%) | A (80°C) | Nd | A (90°C) | A (65°C) | Nd |
Aniline | C | A (90°C) | C | C | B (20°C) |
Aniline oil | C | B (20°C) | C | C | C |
Beer | A (60°C) - B (80°C) | A (60°C) - B (80°C) | A (60°C) | A (20°C) | A (20°C) |
Benzylic alcohol | C | B (40°C) - C (60°C) | V | C | Nd |
Boric acid | A (60°C) - B (90°C) | A (60°C) - B (90°C) | A (70°C) - B (90°C) | A (20°C) - B (85°C) | A (20°C) |
Bromic acid (40%) | C | A (90°C) | V | B (20°C) | C |
Butadiene | V | V | V | C | C |
Butane | A (90°C) - B (80°C) | C | A (60°C) | C | C |
Butter | A (60°C) | A (60°C) | B (20°C) - C (60°C) | C | B (20°C) |
Calcium hydrate | A (90°C) - B (90°C) | A (20°C) | A (20°C) - B (90°C) | A (20°C) - B (65°C) | A (20°C) |
Calcium hypochlorite | C | A (120°C) | C | C | B (20°C) |
Sugar Cane | A (60°C) - B (90°C) | A (80°C) | A (20°C) - B (90°C) | A (20°C) | A (20°C) |
Castor oil | A (70°C) | A (60°C) | A (70°C) | A (25°C) | A (20°C) |
Chlorine (dump) | C | V | C | C | C |
Chloroacetic acid | C | B (70°-90°C) | A (20°C) - C (40°C) | V | V |
Chloroform | C | C | C | C | C |
Chromic acid | C | B | V | V | V |
Citric acid | A (70°C) - B (80°C) | A | A | A (20°C) | A (20°C) |
Cod-liver oil | A (20°C) - B (50°C) | A (20°C) | B (20°C) | C | B (20°C) |
Corn oil | A (80°C) | V | B (20°C) | C | A (20°C) |
Cotton oil | A (70°C) - B (80°C) | A (20°C) - C (80°C) | B (65°C) | C | A (20°C) |
Diesel oil | A (80°C) | C | C | C | C |
Ethyl acetate | C | A (55°C) - C (70°C) | C | C | B (20°C) |
Ethyl alcohol | A (60°C) - B (85°C) | A (90°C) | A (70°C) - B (80°C) | A (20°C) - B (65°C) | B (20°C) |
Fluoroboric acid | A (60°C) - B (85°C) | A (60°C) - B (80°C) | A (60°C) - B (85°C) | A (20°C) - B (65°C) | A (20°C) |
Formic acid | V | A (90°C) | V | B (20°C) | B (20°C) |
Fruit juices | A (60°C) | A (100°C) | A (60°C) | V | A (20°C) |
Gelatin | A (70°C) | A (80°C) | A (60°C) - B (80°C) | A (20°C) - B (65°C) | A (20°C) |
Glucose | A (70°C) | A (80°C) | A (60°C) | A (20°C) - B (48°C) | A (20°C) |
Glycerin | A (80°C) | A (80°C) - B (90°C) | A (70°C) | A (20°C) - B (65°C) | A (20°C) |
Hydraulic oil79 | C | A (100°C) | C | C | V |
Hydrochloric acid (concentrated) | C | C | C | V | C |
Hydrocyanic acid | B (60°C) | A (60°C) | V | Nd | B (20°C) |
Hydrofluoric acid (50%) | C | B (60°C) | V | C (20°C) | V |
Hydrofluoric acid (concentrated) | C | C | C | C | C |
Iodine | B(60°C) A (20°C) 6.5% | B (70°C) A (20°C) 6.5% |
C |
C |
C |
Kerosene | A (80°C) | C | B (20°C) | C | C |
Lactic acid (concentrated) |
A (20°C) |
A (60°C) | A (20°C) - B (60°C) C (80°C) |
Nd |
Nd |
Linseed oil | A (80°C) | B (20°C) | B (20°C) | C | C |
Magnesium chloride | A (70°C) - B (80°C) | A (80°C) - B (100°C) | A (80°C) - B (90°C) | A (20°C) - B (85°C) | A (20°C) |
Magnesium sulphate | A (80°C) - B (100°C) | A (80°C) - B (100°C) | A (80°C) - B (90°C) | B (85°C) | A (20°C) |
Mercury | A (60°C) | A (60°C) | A (60°C) | A (20°C) | A (20°C) |
Methyl alcohol | B (65°C) | A (70°C) - B (80°C) | A (60°C) - B (80°C) | B (37°C) | A (70°C) |
Methyl-ethyl-ketone | C | A (60°C) - B (90°C) | C | C | C |
Milk | A (60°C) | A (100°C) | A (60°C) | A (20°C) - B (37°C) | A (20°C) |
Nitric acid (10%) | C | A (40°C) - C (80°C) | C (40°C) | C | B (20°C) |
Nitric acid (70%) | Nd | C | C | C | C |
Olive oil | A (80°C) | B (20°C) | V | C | V |
Oxalic acid (conc.) | B (60°C) | A (100°C) | B (60°C) | B (20°C) | B (20°C) |
Palmitic acid | A (70°C) | B (20°C) | B (20-70°C) | B (20°C) | C |
Paraffin | A (60°C) | C | B (20°C) | V | C |
Perchloroethylene (Perc) | V | C | C | C | V |
Petrol | A (80°C) | C | C | C | C |
Phosphoric acid (85%) | C | A (80°C) | A (40°C) | B (65°C) | C |
Picric Acid | C | A (20°C) | B (20°C) | C | C |
Picric acid (10%) | B (70°C) | B (90°C) | A (20°C) - C (40°C) | B (20°C) | C |
Pine Oil | B (80°C) | C | C | C | C |
Propylic alcohol | B (80°C) | B (90°C) | A (60°C) - B (90°C) | A (20°C) - B (65°C) | A (20°C) |
SAE n.10 oil | A (80°C) | C | V | C | V |
Sodium chloride | A (70°C) | B (90°C) | A (80°C) | A (65°C) | B |
Sodium hydrate | B (65°C) | A (20°C) | B (90°C) | A (20°C) - B (65°C) | C (20°C) |
Soybean oil | A (80°C) | V | B (20°C) | C | C |
Stearic acid | A (80°C) | B (60°C) | B (60-70° C) | V | B (20°C) |
Sulphur (fused 120°C) | C | A (100° C) | A (20°C) | C (20°C) | A (20°C) - C (120°C) |
Sulphur dioxide | C | C (20°C) | C (20°C) | C | A (20°C) |
Sulphuric acid (50%) | A (20°C) - C (80°C) | B (60-80° C) | B (70°C) | B (26°C) | V |
Sulphuric acid (80%) | B (40°C)-C (60-80°C) | A (60°C) - C (80°C) | C | C | C |
Toluene | C | C | C | C | C |
Tomato Juice | A (60°C) | A (80°C) | A (60°C) | Nd | Nd |
Trichloroethylene | C | C | C | C | C |
Triethanolamine | C (20°C) 100% B (37°C) 80% |
A (70°C) |
A (70°C) |
B (26°C) |
C |
Vegetable oil | A (70°C) | V | C (20°C) | C | A (20°C) |
Vinegar | B (20°C) - V (60°C) | A (60°-90° C) | B (90°C) | B (20°C) | A (20°C) |
Water | A (80°C) | A (100° C) | B (80°C) | A (20°C) - B (80°C) | B (80°C) |
Whisky | A (90°C) | A (90°C) | A (60°C) - C (90°C) | A (20°C) - B (65°C) | A (20°C) |
Wine | A (90°C) | A (90°C) | A (90°C) | A (20°C) - B (65°C) | A (20°C) |
Xylol | C | C | C | C | C |
