View source for E N G I N E E R I N G - C h e m i c a l D a t a


Notes: 1 Ratings for all chemicals apply at room temperature unless chemical is molten (e.g., paraffin wax, sulfur, etc.).
2 Ratings for Carbon apply to Graphite-grade Carbon (i.e., Graphite or Carbon-60).
3 Ratings for SiC apply to Self-Sintered Silicon Carbide.
4 Ratings for Ceramic apply to Ceramic Aluminum Oxide (Al2O3
).
5 Ratings apply to chemicals at 100% concentration (except for salts which are based on aqueous solutions) 
unless stated otherwise. 
Definition of Terms:
SS = Stainless Steel Teflonï¿½ = Poly-tetra-fluoro-ethylene (PTFE)
Alloy-20 = High-Nickel Stainless Steel Rytonï¿½ = Poly-phenylene Sulfide (PPS)
Alloy-C = Ni-Cr-Mo Alloy PEEK  = Poly-ether-ether-ketone
Ti = Titanium Vitonï¿½ = Fluorocarbon Rubber
C = Carbon EPDM  = Ethylene-Propylene-Diene Monomer (Rubber)
SiC = Silicon Carbide NBR = Nitrile Buna Rubber
Cer. = Ceramic Kalrezï¿½ = Perfluorinated Elastomer 
Interpretation of Chemical Resistance Ratings
CHEMICAL RESISTANCE CHART
Notice: The Chemical Resistance Chart
given on the following pages is intended 
as a general guide for rating the resistance
of typical engineering materials to
common industrial chemicals.  It is not
intended as a guarantee of material
performance. The ratings in the chart are
based on data obtained from technical
publications, material manufacturers and
laboratory tests.  The information given in
the chart should be used as a first
approximation for material selection, 
rather than the final answer.  This is because
chemical effects are dependent on many
E N G I N E E R I N G   -   C h e m i c a l   D a t a
Rating Meaning Corrosion Rate (CR) Units
A
Excellent ï¿½ Virtually no effect;  CR < 0.002 in/yr
very low corrosion rate. CR < 0.05 mm/yr
B Good ï¿½ Minor effect; low corrosion rate 
0.002 < CR < 0.02 in/yr
or slight discoloration observed. 0.05 < CR < 0.5 mm/yr
C
Fair ï¿½ Moderate effect; moderate to high  0.02 < CR < 0.05 in/yr
corrosion rate.  Softening, weakening or 
swelling may occur.  
0.5 < CR < 1.3 mm/yr
Not recommended for continuous use.
D
Severe Effect ï¿½ Immediate attack, explosive  CR   0.05 in/yr
or very high corrosion rate.
Not recommended for any use. CR   1.3 mm/yr
N No Data Available ï¿½- ï¿½-
factors, which can cause chemical ratings
to change within a given application.
Such factors include variations in
temperature, pressure and concentration,
chemical combinations, impurities or filler
materials, aeration, agitation and exposure
time.  It is recommended that pumps and
materials first be tested under simulated
field service conditions.  Never test or
operate a pump before acceptable
chemical ratings have been obtained 
and the proper safety precautions have
been taken.TM
T
t e l .   9 0 8 . 5 1 8 . 0 7 7 7 f a x .   9 0 8 . 5 1 8 . 1 8 4 7 w w w . l i q u i f l o . c o m 2
E N G I N E E R I N G   -   C h e m i c a l   D a t a
Chemical/Fluid Metals Plastics Elastomers Minerals
304 SS 316 SS Alloy-20 Alloy-C Ti Teflon Ryton PEEK Viton EPDM NBR Kalrez C SiC Cer.
A
Acetaldehyde A A A A A A A A D B C A A A A
Acetic Acid B A A A A A A A B A B A A A A
Acetone A A A A A A A A D A D A A A A
Acetonitrile A A A A N A A A A A C A A A A
Aluminum Chloride, 20% D C C A D A A A A A A A A A A
Alum. Potass. Sulfate, 10% A A A B A A N A A A A A A A A
Aluminum Sulfate A A A A A A A A A A A A A A A
Ammonia, Anhydrous A A A A A A A A A A A B A A A
Ammonium Chloride D B B B A A A A A A A A A A A
Ammonium Hydroxide A A A A A A A A D A D B A A A
Ammonium Nitrate A A A B A A A A A A A A A A A
Ammonium Sulfate C B B B A A A A D A A A A A A
Amyl Acetate A A A A A A A A D C D A A A A
Aniline A A A B A A A A C B D A A A A
Aqua Regia
1
D D D C A A D D A B D A D A A
Asphalt A A A N N A A A A D B A A A A
B
Barium Hydroxide B A A B A A A N A A A A A A A
Benzene A A A B A A A2 A2 A D D A A A A
Benzoic Acid B B B A A A A A A D D A A A A
Benzyl Alcohol A A A A A A A2 N A D D A A A A
Bitumen A A A A A A A A A D B A A A A
Boric Acid B A B A A A A A A A A A A A A
Brine (NaCl & Water) B B B A A A A A A C A A A A A
Butadiene A A A A A A A N A D D A A A A
Butane A A A A A A A A A D A A A A A
Butyl Acetate B B B A A A A A D B D A A A A
Butyl Alcohol A A A A A A A A A B B A A A A
C
Calcium Chloride D B B B A A A A A A A A A A A
Calcium Hydroxide B B B A A A A A A A A A A A A
Calcium Hypochlorite D B C B A A A A A A B A A A A
Carbon Disulfide B B B B A A A D A D D A A A A
Carbon Tetrachloride A A A A A A2 B A A D B A C A A
Carbonic Acid A A A A A A A A A A B A A A A
Chlorine, anhydrous liquid A A A A D A D D A D B A A A A
Chlorobenzene B B B B A A2 A2 A2 A D D A A A A
Chloroform A A A B A A2 B A A D D A C A A
Chlorosulfonic Acid B B B A A A D A D D D A A A A
Chromic Acid, 30% D D D B A A B A A B D A A A A
Citric Acid B A A A A A A A A A A A A A A
Copper Sulfate B B B A A B A A A A A A A A A
Crude Oil A A A A A A A A A D B A A A A
Cyclohexane B B B B A A A A A D A A A A A
Cyclohexanol A A A A A A A A A D A A A A A
D
Diesel Fuel A A A A A A A A A D A A A A A
Diethylamine (DEA) A A A A A A N A C A C A A A A
Diethylether A A A A A A A A D D D A A A A
Dioctyl Phthalate (DOP) A A A A A A A N B B D A A A A
Dowtherm A A A A A A A N A D D A A A A
Footnotes:
1) Aqua Regia consists of 3:1 or 4:1 conc. HCl / conc. HNO3
.
2) Swelling of plastic material may occur.
3) Depends on specific type of Freon.
4) For MDI or TDI service, pump must be completely dry.  Carbon must not come into contact with humid environments 
or any compound containing a hydroxyl (ï¿½OH) group (e.g., water, alcohols and polyols).TM
T
3 t e l .   9 0 8 . 5 1 8 . 0 7 7 7 f a x .   9 0 8 . 5 1 8 . 1 8 4 7 w w w . l i q u i f l o . c o m
E N G I N E E R I N G   -   C h e m i c a l   D a t a
Chemical/Fluid Metals Plastics Elastomers Minerals
304 SS 316 SS Alloy-20 Alloy-C Ti Teflon Ryton PEEK Viton EPDM NBR Kalrez C SiC Cer.
E
Ethanol A A A A A A A A C A C A A A A
Ether A A A B A A A A C C D A A A A
Ethyl Acetate A A A A A A A A D B D A A A A
Ethylene Glycol A A A A A A A A A A A A A A A
Ethylene Oxide A A A A A A N A D C D A A A A
F
Fatty Acid B A A A B A N A A C B A A A A
Ferric Chloride D D D B A A A B A A A A C A A
Ferric Sulfate B A A A A A A A A A A A A A A
Fluorosilicic Acid C C C B D A A N B B A A A A C
Formaldehyde A A A B A A N A D B C A A A A
Freon, general A A A A A A2 A A A A A
Fuel Oil A A A A A B A A A D A A A A A
G
Gasoline, unleaded A A A A A A A A A D A A A A A
Gasoline, high-aromatic A A A A B A A2 A2 A D A A A A A
Glucose (Corn Syrup) A A A A A A N A A A A A A A A
Glycerin (Glycerol) A A A A A A A A A A A A A A A
H
Heptane A A A A A A A A A D A A A A A
Hexane A A A A A A A A A D A A A A A
Hydraulic Fluid, petro. A A A A N A N A A D A A B A A
Hydraulic Fluid, synth. A A A A N A N A A D B A B A A
Hydrazine A A A A A A N A D A B A A A N
Hydrobromic Acid, 20% D D D A A A N D A A D A A A N
Hydrochloric Acid, 37% D D D B D A D A A C D A A A C
Hydrofluoric Acid, 20% D D D B D A A D D D D A A A D
Hydrogen Peroxide, 50% B B B D A A D A A C D A C A N
I-J-K-L
Isopropyl Alcohol A A A A A A A A A A B A A A A
Jet Fuel A A A A A A A A A D B A A A A
Kerosene A A A A A A A A A D A A A A A
Lactic Acid B B B B A A A A A A A A A A A
M
Maleic Acid A B B B A A N A A D D A A A N
Methanol A A A A B A A A D A D A A A A
Methyl Ethyl Ketone (MEK) A A A A A A A A D A D A A A A
Methylene Chloride B B B B B A2 A A B D D A C A A
Methylene p-diphenyl-Di-Isocyanate (MDI)4
N A N A N A N N D B D A A4 A A
Mineral Oil A A A A A A A A A D A A A A A
N
Naphtha A A A A A A A A A D B A A A A
Naphthalene A A A B A A A A A D D A A A A
Nitric Acid, 20% A A A A A A D B A B D A A A A
Nitrous Acid D B B D B A N A C A C A A A A
O
Oleic Acid B B B A A A A A B D C A A A A
Oleum A A A B D A B N A D D A D A A
Oxalic Acid B A A B A A A A A A B A A A A
------ See Footnote 3 ------
Footnotes:
1) Aqua Regia consists of 3:1 or 4:1 conc. HCl / conc. HNO3
.
2) Swelling of plastic material may occur.
3) Depends on specific type of Freon.
4) For MDI or TDI service, pump must be completely dry.  Carbon must not come into contact with humid environments 
or any compound containing a hydroxyl (ï¿½OH) group (e.g., water, alcohols and polyols).Chemical/Fluid Metals Plastics Elastomers Minerals
304 SS 316 SS Alloy-20 Alloy-C Ti Teflon Ryton PEEK Viton EPDM NBR Kalrez C SiC Cer.
P
Paraffin A A A B A A N A A D A A A A A
Pentane B B N A A A N A A D A A A A A
Perchloric Acid D D D B D A A A A A D A D A A
Perchloroethylene B B B A A A2 A A A D B A A A A
Phenol A A A A A A A2 D A D D A A A A
Phosphoric Acid, 40% B B B A C A C A A B D A A A A
Phthalic Acid B A A B A A N A C A C A A A N
Potassium Hydroxide, 50% B B B B C A A A D A B A A A D
Potassium Nitrate B B B B A A A A A A A A A A B
Potassium Permanganate B B B A A A A A C A C A A A A
Propyl Alcohol A A A A A A A A A A A A A A A
Propylene Glycol B B B B A A N N C A C A A A A
Pyridine A A A B B A A A A B D A A A A
S
Silver Nitrate B A A A A A A A A A B A A A A
Sodium Bicarbonate A A A B A A A A A A A A A A A
Sodium Bisulfite B B B B B A A A A A A A A A A
Sodium Chlorate B B A A A A A A C A C A A A A
Sodium Chloride B B B A A A A A A C A A A A A
Sodium Hydroxide, 50% B B B A B A A A B A B A A A D
Sodium Hypochlorite, <20% D D D A A A C A A A B A B A A
Sodium Peroxide A A A B N A N A A A B A A A A
Sodium Silicate A A A B A A A A A A A A A A A
Sodium Sulfide B B B B A A A A A A A A A A A
Sulfur, molten B A A A A A N N A C D A A A A
Sulfuric Acid, <10% D B A A D A A A A A A A A A A
Sulfuric Acid, 10-75% D D A A D A B D A B B A A A A
Sulfuric Acid, 75-93% D D A A D A B D A B C A A A A
Sulfuric Acid, 93-100% A A A A D A B D A C N A A A A
Sulfurous Acid B B B B A A A A A B B A A A A
T
Tall Oil (Liquid Rosin) B B B A N A N N A D A A A A A
Tallow A A N N N A N A A D A A A A A
Tetrahydrofuran (THF) A A A A B A A A D B D A A A A
Thionyl Chloride N D N A N A2 N N A D B A A A A
Toluene A A A A A A A2 A2 A D D A A A A
Toluene Di-Isocyanate (TDI) 4 N A N A N A N N D B D A A4 A A
Toluenesulphonic Acid N N N A N A N N C A C A A A A
Trichloroethane A A A A A A
2
N A A D D A A A A
Trichloroethylene B B B A A A
2
C A A D C A A A A
Trichlorotrifluoroethane A A A A A A
2
A A B D A C A A A
U-V-W-X
Urea B B B B A A A A A A B N A A B
Vinyl Chloride B A A A A A2 N A A D B A A A A
Water, distilled A A A A A A A A A A A A A A A
Water, deionized A A N A A A A A A A A A A A B
Xylene A A A A A A A2 A2 A D D A A A A
Footnotes:
1) Aqua Regia consists of 3:1 or 4:1 conc. HCl / conc. HNO3
.
2) Swelling of plastic material may occur.
3) Depends on specific type of Freon.
4) For MDI or TDI service, pump must be completely dry.  Carbon must not come into contact with humid environments 
or any compound containing a hydroxyl (ï¿½OH) group (e.g., water, alcohols and polyols).
TM
T
t e l .   9 0 8 . 5 1 8 . 0 7 7 7 f a x .   9 0 8 . 5 1 8 . 1 8 4 7 w w w . l i q u i f l o . c o m 4
E N G I N E E R I N G   -   C h e m i c a l   D a t a

Learn more from [http://www.michael-smith-engineers.co.uk/ http://www.michael-smith-engineers.co.uk].