Materials and Tools
Halar®
Chemical rating key:
A = Little to no Interaction
B = Slight Interaction
C = Not Recommended
| Chemical | Rating | Notes |
|---|---|---|
| Acetic acid |
A
|
|
| Acetic acid (glacial) |
A
|
|
| Acetic anhydride |
A
|
|
| Acetone |
A
|
Elevated temperatures reduce resistance. |
| Acetyl chloride |
A
|
|
| Acetyl nitrile |
A
|
|
| Acetylene |
A
|
|
| Acrylonitrile |
A
|
|
| Adipic acid |
A
|
|
| Allyl chloride |
A
|
|
| Alum |
A
|
|
| Aluminum chloride |
A
|
|
| Aluminum fluoride |
A
|
|
| Aluminum hydroxide |
A
|
|
| Aluminum nitrate |
A
|
|
| Aluminum oxychloride |
A
|
|
| Aluminum sulfate |
A
|
|
| Ammonia, aqua |
A
|
|
| Ammonia, gas |
A
|
|
| Ammonium acetate |
A
|
|
| Ammonium alum |
A
|
|
| Ammonium bifluoride |
A
|
|
| Ammonium bisulfide |
A
|
|
| Ammonium carbonate |
A
|
|
| Ammonium chloride |
A
|
|
| Ammonium dichromate |
A
|
|
| Ammonium fluoride |
A
|
|
| Ammonium hydroxide |
A
|
|
| Ammonium metaphosphate |
A
|
|
| Ammonium nitrate |
A
|
|
| Ammonium persulphate |
A
|
|
| Ammonium phosphate |
A
|
|
| Ammonium sulfate |
A
|
|
| Ammonium sulfide |
A
|
|
| Amyl acetate |
A
|
Elevated temperatures reduce resistance. |
| Amyl alcohol |
A
|
|
| Amyl chloride |
A
|
|
| Aniline |
A
|
Elevated temperatures reduce resistance. |
| Anitmony trichloride |
A
|
|
| Anthraquinone |
A
|
|
| Anthraquinone sulfonic acid |
A
|
|
| Aqua regia |
A
|
|
| Arsenic acid |
A
|
|
| Barium carbonate |
A
|
|
| Barium chloride |
A
|
|
| Barium hydroxide |
A
|
|
| Barium nitrate |
A
|
|
| Barium sulfate |
A
|
|
| Barium sulfide |
A
|
|
| Beer |
A
|
|
| Beet sugar liquors |
A
|
|
| Benzaldehyde |
A
|
Elevated temperatures reduce resistance. |
| Benzene |
A
|
|
| Benzene sulfonic acid |
A
|
Elevated temperatures reduce resistance. |
| Benzoic acid |
A
|
|
| Benzol benzene |
A
|
Elevated temperatures reduce resistance. |
| Benzyl alcohol |
A
|
|
| Bismuth carbonate |
A
|
|
| Black liquor |
A
|
|
| Bleach |
A
|
|
| Borax |
A
|
|
| Boric acid |
A
|
|
| Brine acid |
A
|
|
| Bromine |
A
|
|
| Bromine, liquid |
A
|
|
| Bromine, vapor |
A
|
Elevated temperatures reduce resistance. |
| Bromine, water (25%) |
A
|
|
| Bromobenzene |
A
|
Elevated temperatures reduce resistance. |
| Bromotoluene |
A
|
Elevated temperatures reduce resistance. |
| Butadiene |
A
|
|
| Butane |
A
|
|
| Butanol |
A
|
|
| Butyl acetate |
A
|
Elevated temperatures reduce resistance. |
| Butyl alcohol |
A
|
|
| Butyl cellosolve |
A
|
|
| Butyl phenol |
A
|
|
| Butyl stearate |
A
|
|
| Butylene |
A
|
|
| Butyric acid |
A
|
|
| Cadmium cyanide |
A
|
|
| Calcium bisulfide |
A
|
|
| Calcium bisulfite |
A
|
|
| Calcium carbonate |
A
|
|
| Calcium chlorate |
A
|
|
| Calcium chloride |
A
|
|
| Calcium hydroxide |
A
|
|
| Calcium hypochlorite |
A
|
|
| Calcium nitrate |
A
|
|
| Calcium oxide |
A
|
|
| Calcium sulfate |
A
|
|
| Cane sugar liquors |
A
|
|
| Capryllic acid |
A
|
|
| Carbon dioxide, dry |
A
|
|
| Carbon dioxide, wet |
A
|
|
| Carbon disulfide |
A
|
|
| Carbon monoxide |
A
|
|
| Carbon tetrachloride |
A
|
|
| Carbonic acid |
A
|
|
| Castor oil |
A
|
|
| Caustic potash |
A
|
|
| Cellosolve |
A
|
|
| Cellosolve acetate |
A
|
|
| Chloracetic acid |
A
|
|
| Chloral hydrate |
A
|
|
| Chloramine |
A
|
|
| Chlorine gas, dry |
A
|
Elevated temperatures reduce resistance. |
| Chlorine gas, wet |
A
|
|
| Chlorine water, sat. |
A
|
|
| Chlorine, liquid |
A
|
|
| Chlorobenzene |
A
|
Elevated temperatures reduce resistance. |
| Chlorobenzyl chloride |
A
|
Elevated temperatures reduce resistance. |
| Chloroform |
A
|
|
| Chlorosulfonic acid |
A
|
|
| Chrome alum |
A
|
|
| Chromic acid |
A
|
|
| Citric acid |
A
|
|
| Coconut oil |
A
|
|
| Coke oven gas |
A
|
|
| Copper carbonate |
A
|
|
| Copper chloride |
A
|
|
| Copper cyanide |
A
|
|
| Copper fluoride |
A
|
|
| Copper nitrate |
A
|
|
| Copper sulfate |
A
|
|
| Corn syrup |
A
|
|
| Cottonseed Oil |
A
|
|
| Cresol |
A
|
Elevated temperatures reduce resistance. |
| Cresylic acid, 50% |
A
|
Elevated temperatures reduce resistance. |
| Croton aldehyde |
A
|
Elevated temperatures reduce resistance. |
| Crude Oil |
A
|
|
| Cupric chloride |
A
|
|
| Cupric fluoride |
A
|
|
| Cupric sulfate |
A
|
|
| Cuprous chloride |
A
|
|
| Cyclohexane |
A
|
|
| Cyclohexanol |
A
|
Elevated temperatures reduce resistance. |
| Cyclohexanone |
A
|
Elevated temperatures reduce resistance. |
| Detergent Solution |
A
|
|
| Detergents |
A
|
|
| Dextrin |
A
|
|
| Dextrose |
A
|
|
| Diacetone alcohol |
A
|
Elevated temperatures reduce resistance. |
| Dichlorobenzene |
A
|
Elevated temperatures reduce resistance. |
| Dichloroethylene |
A
|
Elevated temperatures reduce resistance. |
| Diesel fuels |
A
|
|
| Diethyl cellosolve |
A
|
|
| Diethyl ether |
A
|
|
| Diethylamine |
A
|
Elevated temperatures reduce resistance. |
| Diglycolic acid |
A
|
|
| Dimethyl formamide |
A
|
|
| Dimethyl hydrazine |
A
|
Elevated temperatures reduce resistance. |
| Dimethyl phthalate |
A
|
|
| Dimethyl sulfoxide |
A
|
|
| Dimethylamine |
A
|
Elevated temperatures reduce resistance. |
| Dioxane |
A
|
Elevated temperatures reduce resistance. |
| Dioxtyl phthalate |
A
|
Elevated temperatures reduce resistance. |
| Disodium phosphate |
A
|
|
| Divinylbenzene |
A
|
Elevated temperatures reduce resistance. |
| Ehtylene diamine |
A
|
Elevated temperatures reduce resistance. |
| Epson salt |
A
|
|
| Ethyl acetate |
A
|
|
| Ethyl acetoacetate |
A
|
|
| Ethyl acrylate |
A
|
Elevated temperatures reduce resistance. |
| Ethyl alcohol |
A
|
|
| Ethyl chloride |
A
|
|
| Ethyl chloroacetate |
A
|
|
| Ethyl ether |
A
|
|
| Ethylene bromide |
A
|
|
| Ethylene chlorohydrin |
A
|
Elevated temperatures reduce resistance. |
| Ethylene dichloride |
A
|
Elevated temperatures reduce resistance. |
| Ethylene glycol |
A
|
|
| Ethylene oxide |
A
|
|
| Fatty acids |
A
|
|
| Ferric chloride |
A
|
|
| Ferric nitrate |
A
|
|
| Ferric sulfate |
A
|
|
| Ferrous chloride |
A
|
|
| Ferrous nitrate |
A
|
|
| Ferrous sulfate |
A
|
|
| Fluoboric acid |
A
|
|
| Fluorine gas, wet |
A
|
|
| Fluosilicic acid |
A
|
|
| Formaldehyde |
A
|
|
| Formic acid |
A
|
|
| Formic acid, anhydrous |
A
|
|
| Freon F-11 |
A
|
|
| Freon F-113 |
A
|
|
| Freon F-114 |
A
|
|
| Freon F-12 |
A
|
|
| Freon F-21 |
A
|
|
| Freon F-22 |
A
|
|
| Fruit juices, pulp |
A
|
|
| Gallic acid |
A
|
|
| Gas, natural |
A
|
|
| Gasoline, leaded |
A
|
|
| Gasoline, sour |
A
|
|
| Gasoline, unleaded |
A
|
|
| Gelatin |
A
|
|
| Genetron 113 (chlorinated solvent) |
A
|
|
| Gin |
A
|
|
| Glucose |
A
|
|
| Glycerine, glycerol |
A
|
|
| Glycolic acid |
A
|
|
| Glycolis |
A
|
|
| Heptane |
A
|
|
| Hexane |
A
|
|
| Hexyl alcohol |
A
|
|
| Hydrobromic acid |
A
|
|
| Hydrochloric acid |
A
|
|
| Hydrocyanic acid |
A
|
|
| Hydrofluoric acid |
A
|
|
| Hydrofluoric acid, dilute |
A
|
|
| Hydrofluosilicic acid |
A
|
|
| Hydrogen |
A
|
|
| Hydrogen cyanide |
A
|
|
| Hydrogen peroxide |
A
|
|
| Hydrogen phosphide |
A
|
|
| Hydrogen sulfide, aqueous |
A
|
|
| Hydrogen sulfide, dry |
A
|
|
| Hydroquinone |
A
|
|
| Hypochlorous acid |
A
|
|
| Iodine |
A
|
|
| Iodine solution |
A
|
|
| Isooctane |
A
|
|
| Isopropyl alcohol |
A
|
|
| Isopropyl ether |
A
|
|
| Jet fuel, JP-4 |
A
|
|
| Jet fuel, JP-5 |
A
|
|
| Kerosene |
A
|
|
| Lactic acid |
A
|
|
| Lard oil |
A
|
|
| Lauric acid |
A
|
|
| Lauryl chloride |
A
|
|
| Lead acetate |
A
|
|
| Lead chloride |
A
|
|
| Lead nitrate |
A
|
|
| Lead sulfate |
A
|
|
| Lemon oil |
A
|
|
| Lime Sulfur |
A
|
|
| Linoleic acid |
A
|
|
| Linoliec oil |
A
|
|
| Linseed oil |
A
|
|
| Linseed oil, blue |
A
|
|
| Lithium bromide |
A
|
|
| Lubricating oil |
A
|
|
| Magnesium carbonate |
A
|
|
| Magnesium chloride |
A
|
|
| Magnesium hydroxide |
A
|
|
| Magnesium nitrate |
A
|
|
| Magnesium sulfate |
A
|
|
| Maleic acid |
A
|
|
| Malic acid |
A
|
|
| Mercuric chloride |
A
|
|
| Mercuric cyanide |
A
|
|
| Mercuric sulfate |
A
|
|
| Mercurous nitrate |
A
|
|
| Mercury |
A
|
|
| Methane |
A
|
|
| Methanol |
A
|
|
| Methoxyethyl oleate |
A
|
|
| Methyl alcohol |
A
|
|
| Methyl bromide |
A
|
|
| Methyl cellosolve |
A
|
|
| Methyl chloride |
A
|
|
| Methyl chloroform |
A
|
Elevated temperatures reduce resistance. |
| Methyl isobutyl ketone |
A
|
Elevated temperatures reduce resistance. |
| Methyl methacrylate |
A
|
|
| Methyl sulfate |
A
|
|
| Methyl sulfuric acid |
A
|
|
| Methylamine |
A
|
Elevated temperatures reduce resistance. |
| Methylene bromide |
A
|
Elevated temperatures reduce resistance. |
| Methylene chloride |
A
|
Elevated temperatures reduce resistance. |
| Methylene iodine |
A
|
Elevated temperatures reduce resistance. |
| Methylethyl ketone (MEK) |
A
|
Elevated temperatures reduce resistance. |
| Methylisobutyl Ketone |
A
|
|
| Milk |
A
|
|
| Mineral oil |
A
|
|
| Molasses |
A
|
|
| Motor oil |
A
|
|
| Naptha |
A
|
|
| Napthalene |
A
|
|
| Natural gas |
A
|
|
| Nickel acetate |
A
|
|
| Nickel chloride |
A
|
|
| Nickel nitrate |
A
|
|
| Nickel sulfate |
A
|
|
| Nicotine |
A
|
|
| Nicotinic acid |
A
|
|
| Nitric acid, above 50% |
A
|
Elevated temperatures reduce resistance. |
| Nitric acid, red fuming |
A
|
|
| Nitric acid, up to 40% |
A
|
|
| Nitrous acid |
A
|
Elevated temperatures reduce resistance. |
| Nitrous oxide |
A
|
|
| Oleic acid |
A
|
|
| Oleum |
A
|
Elevated temperatures reduce resistance. |
| Oxalic acid |
A
|
Elevated temperatures reduce resistance. |
| Oxygen, gas |
A
|
|
| Ozone |
A
|
|
| Palmitic acid |
A
|
|
| Perchloroethylene |
A
|
|
| Perphosphate |
A
|
|
| Petroleum oils, refined |
A
|
|
| Petroleum oils, sour |
A
|
|
| Phenol |
A
|
Elevated temperatures reduce resistance. |
| Phenylthydrazine |
A
|
|
| Phosphoric acid |
A
|
|
| Phosphorous pentoxide |
A
|
|
| Phosphorous trichloride |
A
|
|
| Phosphorous yellow |
A
|
|
| Photographic solutions |
A
|
|
| Picric acid |
A
|
|
| Plating solution, rhodium |
A
|
|
| Plating solution |
A
|
|
| Plating solution, brass |
A
|
|
| Plating solution, chrome |
A
|
|
| Plating solution, copper |
A
|
|
| Plating solution, lead |
A
|
|
| Plating solution, nickel |
A
|
|
| Plating solution, silver |
A
|
|
| Plating solution, tin |
A
|
|
| Plating solution, zinc |
A
|
|
| Potash |
A
|
|
| Potassium alum |
A
|
|
| Potassium aluminum sulfate |
A
|
|
| Potassium bichromate |
A
|
|
| Potassium bisulfate |
A
|
|
| Potassium borate |
A
|
|
| Potassium bromide |
A
|
|
| Potassium carbonate |
A
|
|
| Potassium chlorate |
A
|
|
| Potassium chlorate, aqueous |
A
|
|
| Potassium chloride |
A
|
|
| Potassium chromate |
A
|
|
| Potassium cyanide |
A
|
|
| Potassium dichromate |
A
|
|
| Potassium ferricyanide |
A
|
|
| Potassium ferrocyanide |
A
|
|
| Potassium hydroxide |
A
|
|
| Potassium iodide |
A
|
|
| Potassium nitrate |
A
|
|
| Potassium perchlorate |
A
|
|
| Potassium permanganate |
A
|
|
| Potassium persulfate |
A
|
|
| Potassium sulfate |
A
|
|
| Propane |
A
|
|
| Propyl alcohol |
A
|
|
| Propylene oxide |
C
|
|
| Pyridine |
C
|
|
| Pyrogallic acid |
A
|
|
| Salicyclic acid |
A
|
|
| Salicylaldehyde |
A
|
Elevated temperatures reduce resistance. |
| Silcic acid |
A
|
|
| Silicone Oil |
A
|
|
| Silver cyanide |
A
|
|
| Silver nitrate |
A
|
|
| Silver sulfate |
A
|
|
| Soaps |
A
|
|
| Sodium acetate |
A
|
|
| Sodium alum |
A
|
|
| Sodium benzoate |
A
|
|
| Sodium bicarbonate |
A
|
|
| Sodium bichromate |
A
|
|
| Sodium bisulfate |
A
|
|
| Sodium bisulfite |
A
|
|
| Sodium bromide |
A
|
|
| Sodium carbonate |
A
|
|
| Sodium chlorate |
A
|
|
| Sodium chloride |
A
|
|
| Sodium cyanide |
A
|
|
| Sodium dichromate |
A
|
|
| Sodium fluoride |
A
|
|
| Sodium hydroxide |
A
|
|
| Sodium hypochlorite |
A
|
|
| Sodium iodide |
A
|
|
| Sodium metaphosphate |
A
|
|
| Sodium nitrate |
A
|
|
| Sodium nitrite |
A
|
|
| Sodium perchlorate |
A
|
|
| Sodium peroxide |
A
|
|
| Sodium phosphate, acid |
A
|
|
| Sodium phosphate, alkaline |
A
|
|
| Sodium silicate |
A
|
|
| Sodium sulfate |
A
|
|
| Sodium sulfide |
A
|
|
| Sodium sulfite |
A
|
|
| Sodium thiosulfate |
A
|
|
| Sour crude oil |
A
|
|
| Stannic chloride |
A
|
|
| Stannous chloride |
A
|
|
| Starch |
A
|
|
| Stearic acid |
A
|
|
| Stoddard's solvent |
A
|
|
| Succincic acid |
A
|
|
| Sulfate liquors |
A
|
|
| Sulfite liquor |
A
|
|
| Sulfur |
A
|
|
| Sulfur chloride |
A
|
|
| Sulfur dioxide, dry |
A
|
|
| Sulfur dioxide, wet |
A
|
|
| Sulfuric acid |
A
|
|
| Sulfurous acid |
A
|
|
| Tall oil tannic acid |
A
|
|
| Tanning liquors |
A
|
|
| Tar |
A
|
|
| Tartaric acid |
A
|
|
| Tetraethyl lead |
A
|
|
| Tetrahydrodurane |
C
|
|
| Tetrahydrofuran |
C
|
|
| Thionyl chloride |
A
|
|
| Thread cutting oils |
A
|
|
| Toluene |
A
|
Elevated temperatures reduce resistance. |
| Tomato juice |
A
|
|
| Transformer oil |
A
|
|
| Tributyl phosphate |
A
|
Elevated temperatures reduce resistance. |
| Trichloroacetic acid |
A
|
Elevated temperatures reduce resistance. |
| Trichloroethylene |
A
|
|
| Triethanolamine |
A
|
Elevated temperatures reduce resistance. |
| Triethylamine |
A
|
Elevated temperatures reduce resistance. |
| Trisodium phosphate |
A
|
|
| Turpentine |
A
|
|
| Urea |
A
|
|
| Urine |
A
|