CHEMICAL RESISTANCE TABLE

Transcription

1 Page 1 of 14 The data given in the extensive Table below is the current best state of information known to Nylact. Polymer compatibility with solvents other than those in this chart may arise: the General Principles to approach this issue are: -if a new solvent is, say, a ketone then look for a similar solvent, e.g, look at the polymer compatibility of other ketones of higher or lower molecular weight. -the data given is for room, ~23 o C, and 50 o C temperatures. Solvents at higher temperatures, say >100 o C, are usually more aggressive towards polymers and cause premature failure when compared to the lower temperatures for which data is given. Always test for higher temperature exposure. -Prolonged exposure, i.e., months or years, to solvents at room temperatures can denature polymer surfaces, causing surface stress cracking leading to physical failure. -do not expose condensation polymers such the nylons, PET/PBT and POM s, to solutions with a ph of <2 or >12. Exposure of these polymers outside of these defined limits, such to strong acids or alkalis, will begin to depolymerise and degrade the polymers which will lose strength and integrity. -some organic solvents will attack and ultimately dissolve polymers. Hot m-cresol, an unpleant solvent, will dissolve nylons after prolonged exposure by refluxing. Some binary combinations of ionic liquids are good solvents of PVC or nylon polymers at room temperature or slightly above. Always test polymers for compatibility with unusual solvents. -for a new solvent not listed below, an unusual solvent or for listed solvents used at higher temperatures, always test the polymer under consideration for compatibility. -a blank box in the chemical/resistance table means that no information is available for that combination. Professor Malcolm F Fox Research and Development Manager, Nylact Ltd.

2 Page 2 of 14 Concentration (%) Temperature ( o C) Polyamides (PA6 and PA66) Nylon 12 (PA12) Polyacetal (POM-C) Polyacetal (POM-H) Polyethylene terephtalate (PET) Polyethylene (HDPE) Acetaldehyde, CH 3 CHO and at any conc. 25 Acetamide, CH 3 CONH Acetic acid, CH 3 COOH

3 Page 3 of 14 % o C PA6 /PA66 PA 12 POM-C POM-H PET HDPE Acetone, CH 3 COCH Acetylene, HC CH Aluminium sulphate, Al 2 (SO 4 ) 3 Good Good saturated 25 resistance resistance Ammonia, NH Ammonium hydroxide, NH 4 OH Ammonium chloride, NH 4 Cl Ammonium nitrate, NH 4 NO 3 Ammonium phosphate, (NH 4 ) 2 HPO 4 Ammonium sulphate, (NH 4 ) 2 SO 4 Aniline, C 6 H 5 NH 2 25 Aromatic hydrocarbons Benzene, C 6 H Aromatic hydrocarbons Poor resistance

4 Page 4 of 14 % o C PA6 /PA66 PA 12 POM-C POM-H PET HDPE Benzoic acid, C 6 H 5 COOH saturated 25 Benzyl alcohol, C 6 H 5 CH 2 OH 25 Bleaching liquor, 12.5% Cl 2 NaOCl available 25 Borax Na 2 B 4 O 7 Boric acid, H 3 BO 3 Brake fluid, DIN available 25 Bromine, Br 2 25 Butadiene, CH 2 CH=CHCH 2 25 Butane, C 4 H Butene, C 4 H 8 25 Butylamine, C 4 H 9 OH 25 Calcium chloride, CaCl saturated 25

5 Page 5 of 14 % o C PA6 /PA66 PA 12 POM-C POM-H PET HDPE Calcium chloride, CaCl 2 in alcohol Dissolves Calcium hypochlorite, Ca(ClO) 2 saturated 25 Carbon dioxide, CO 2 25 Carbon disulphide, CS 2 25 Carbon tetrachloride, CCl 4 25 Chloride of Lime/Water 25 Chlorine water, Cl 2 /H 2 O saturated 25 Chloroacetic acid, ClCH 2 COOH Chlorobenzene, C 6 H 5 Cl 25 Chlorofluorocarbons, CFC's 25 Chloroform, CHCl 3 25 Chromic acid, H 2 CrO Crude Oil available 25

6 Page 6 of 14 % o C PA6 /PA66 PA 12 POM-C POM-H PET HDPE Detergent solutions 25 Diethylene glycol, (HOCH 2 CH 2 ) 2 O 25 Dimethyl ether, CH 3 OCH 3 Ether, C 2 H 5 OC 2 H Ethyl acetate, CH 3 COOC 2 H 5 25 Ethyl alcohol, C 2 H 5 OH Ethylene glycol, HOC 2 H 4 OH 25 Fatty acids, R-COOH 5 25 Fluorine, F 2 25 Fluorosilicic acid, H 2 SiF Formaldehyde, HCHO aqueous Formic acid, HCOOH 2 25 Glycerine, CHOH(CH 2 OH) 2 25 Hydraulic Oils 25 available 80

7 Page 7 of 14 % o C PA6 /PA66 PA 12 POM-C POM-H PET HDPE Hydrobromic acid, HBr Hydrocloric acid, HCl 1 25 Hydrofluoric acid, HF Hydrogen, H 2 25 Hydrogen chloride, (g), HCl 25 Hydrogen peroxide, H 2 O Hydrogen sulphide (aq.), H 2 S Iron(III)-chloride, FeCl Isopropyl alcohol, (CH 3 ) 2 CHOH 25

8 Page 8 of 14 % o C PA6 /PA66 PA 12 POM-C POM-H PET HDPE Isopropyl ether, (CH 3 ) 2 CH 2 O 25 Kerosene available 25 Ketones (aliphatic), RCOR 25 Lactic acid, CH 3 CHOHCOOH Lubricating grees available 25 Maleic acid, HOOCCH 2 =CH 2 COOH Malic acid, HOOC CH(OH)CH 2 COOH saturated 25 Mercury, Hg 25 Methyl acetate, CH 3 COOCH 3 25 Methyl acohol, CH 3 OH Methyl bromide, CH 3 Br 25 Methyl chloride, CH 3 Cl 25 Methyl ethyl ketone, CH 3 COC 2 H

9 Page 9 of 14 % o C PA6 / PA66 PA 12 POM-C POM-H PET HDPE Methylene chloride, CH 2 Cl 2 25 Milk available 25 Mineral oils available 25 available 25 Naphtha Naphthalene, C 10 H 8 25 Nitric acid, HNO Nitrobenzene, C 6 H 5 NO Oxalic acid, HOOCCOOH Oxygen, O 2 25 Oxygen under pressure, O 2 25 Ozone, O 3 25

10 Page 10 of 14 % o C PA6 / PA66 PA 12 POM-C POM-H PET HDPE Ozone diluted in air, O 3, 20ppm 25 Paraffin oil available 25 Petrol, normal, DIN available 85 Phenol, C 6 H 5 OH 40 Dissolves Phosphoric acid, H 3 PO Phthalic acid, C 6 H 4 (COOH) 2 saturated 25 Potsium bromide, KBr Potsium carbonate, K 2 CO Potsium chloride, KCl Potsium dichromate, K 2 Cr 2 O

11 Page 11 of 14 % o C PA6 / PA66 PA 12 POM-C POM-H PET HDPE Potsium hydroxide, KOH Potsium nitrate, KNO 3 Potsium permanganate, KMnO Propyl alcohol, n-c 3 H 7 OH 25 Pyridine, C 5 H 5 N 25 Salicylic acid, HOC6H4COOH saturated 25 Sodium acetate, CH 3 COONa Sodium bisulphate, NaHSO Sodium bisulphite, NaHSO 3 Sodium carbonate, Na 2 CO 3 Sodium chloride, NaCl Sodium cyanide, NaCN Sodium dichromate, Na 2 Cr 2 O 7

12 Page 12 of 14 % o C PA6 / PA66 PA 12 POM-C POM-H PET HDPE Sodium hydroxide, NaOH Sodium hypochlorite, (12.5% act. Cl), NaOCl 5 25 Sodium nitrite, NaNO 2 Sodium phosphate, Na 3 PO 4 Sodium slicate, Na 2 SiO 3 Sodium sulphate, Na 2 SO 4 Sodium sulphide, Na 2 S 5 25 Sodium sulphite, Na 2 SO Sodium thiosulphate, Na 2 S 2 O 3 Steam, H 2 O >100 Stearic acid, C 17 H 35 COOH 25 Styrene, C 6 H 5 CH=CH 2 80 Sulphur, S 25

13 Page 13 of 14 % o C PA6 / PA66 PA 12 POM-C POM-H PET HDPE Sulphur dioxide, dry, SO 2 25 Sulphur dioxide, wet, SO 2 25 Sulphuric acid, H 2 SO 4 Poor 1 25 resistance Dissolves Sulphurous acid, H 2 SO 3 saturated 25 Tartaric acid, HOOC(CHOH) 2 COOH 5 25 Tetrachloroethylene, Cl 2 CCCl 2 25 Tetrahydrofuran, C 4 H 8 O 25 Toluene, C 6 H 5 CH 3 25

14 Page 14 of 14 % o C PA6 / PA66 PA 12 POM-C POM-H PET HDPE Trichloroacetic acid, CCl 3 COOH Trichloroethylene, ClCHCCl 2 25 Trichlorofluoromethane, R-11, CCl 3 F 25 Turpentine Oil available 25 Urea, Co(NH 2 ) Vinegar available 25 Zinc chloride, ZnCl 2 NOTE: While the information above is believed to be accurate and represents the best information currently available to us, Nylact Materials make no warranty, expressed or implied, with respect to such information and sume no liability resulting from its use.