SOLUZIONI PER L ENERGIA TERMICA THERMAL ENERGY SOLUTIONS
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1 Table on chemical resistance of rubber materials Class 1 little or no effect Class 2 minor effect Class 3 moderate effect Class 4 severe effect Chemical Conc. Temp. EPDM NBR VITON % C Acetic acid Acetone RT Ammonia gas Cold Hot Ammonia Liquid RT Benzene RT Boric acid Bunker oil Butadiene RT Butanol Butylene Calcium hydroxide Calcium hypochlorite Carbon dioxide Carbon tetrachloride RT Castor oil Chlorine (gas) 3 2 Chlorine water RT Chloroform RT Chromic acid Citric acid sat Coconut oil Cod liver oil RT Corn oil RT Diacetone Diesel oil (see fuel oil) Dioxane RT Ethane Ethanol Ether RT Ethyl acetate RT Ethylene 1 1 Ethylene glycol Ethylene oxide Fluid 101 (diester oil) Fluorine liquid 3 2 Formaldehyde 40 RT Formic acid sat RT sat Freon 12 RT Freon 22 RT 1 3 Freon 112 RT 4 2 1
2 Fuel oil (diesel) Fumaric acid 1 1 Glucose Glycerine Hexane RT Hexanol RT Hydrobromic acid 37 RT Hydrocloric acid RT RT Hydrofluoric acid 48 RT Hydrogen peroxide 30 RT Hydrogen sulfide sat RT Isobutyl alcohol RT Isopropyl alcohpl Kerosene Latic acid Lard Magnesium hydroxide 1 Methane Methanol Methyl chloride Milk Mineral oil Mineral oil Mineral oil Natural gas Nitric acid conc. 65 RT Nitric acid diluted Nitrogen Olei acid RT Olive oil Oxygen RT Phenol Phosporic acid Propanol Salicylic acid Salt sat Soap sol Sodium carbonate Sodium hydroxide Sodium hypochlorite Sodium peroxide 1 1 Soybean oil RT Sucrose sol. 1 1 Sulfur dioxide RT 3 1 Sulfuric acid RT
3 RT 4 1 Toluene RT Transformer oil Turpentine RT Veget. Oils Vynil chloride 1 Water D.I
4 Plate materials - corrosion tables 0 corrosion rate less than 0,1 mm/year. The material is corrosion proof 1 corrosion rate 0,1-1 mm/year. The material is not corrosion proof, but can be used in certain cases. 2 corrosion rate over 1 mm/year. Serious corrosion. The material is not usable. P,p Risk of pitting and crevice corrosion S,s Risk of stress corrosion cracking BP Boiling solution Corrosive medium Conc. Temp TI TI SMO PD Acetic acid Acetone Ammonium chloride 1 20 p0 p0 p BP p0s p0s p0s p0 p0 p p0 p0 p p2s p1s p1s 0 0 Beer Benzene 20-BP Butyl alcohol 20-BP Calcium chloride 5 20 p0 p0 p p0 p0 p p0s p0s p0s p0 p0 p p0s p0s p0s p0s p0s p0s p0s p0s p0s 0 0 Calcium hydroxide all 20-BP Carbon tetrachloride Chromic acid
5 BP Detergents Dextrose Ether 20-BP Ethyl alcohol all conc. 20-BP Fatty acids Fluorine dry gas most Formaldehyde pure 2-BP Freon < Fruit juices Wines BP Glucose all conc Ethylene glycol all conc Hydrochloric acid 0, p1 p0 p ,1 100 p1s p0s p0s 0 0 0,2 20 p1 p0 p ,5 20 p1 p0 p , p1 p0 p p0 p p0 p p0 p p1 p Hydrogen peroxide
6 Lithium chloride 10 BP p0s p0s p0s p1s p0s p0s p p1s p1s p0s 0 0 Magnesium chlordie 2,5 20 p0 p0 p BP p0s p0s p0s 0 0 Phosporic acid 1, , Potassium chromate all conc BP Potassium hydroxide 10 BP BP BP 1s 1s 1s s 1s 1s 2 2 Saccharin all conc Salicylic acid Silver nitrate all conc 20-BP Sodium bromide 5-10,1 20 p0 p0 p p0s p0s p0s 0 0 Sodium carbonate all conc 20-BP Sodium fluoride 5-10, Sodium hydroxide BP BP 1s 1s 1s
7 s 1s 1s 2 2 Sodium hypochlorite 5 20 p1 p1 p BP p1s p1s p1s 0 0 Starch all conc Sulphuric acid 0, , , , BP Sulphuric acid BP
8
9 TABELLA COMPATIBILITA' MATERIALI Acciaio AISI 316 e rame ACQUA CONTENENTE CONCENTRAZIONE (mg/l) AISI 316 RAME Elementi organici + 0 Conduttività elettrica <500S/cm + + >500S/cm + - NH3 < > Cloruri < > Solfiti senza cloruri <5 0 + >5 0/- 0 Ferro in soluzione < > Acido carbonico libero < Manganese in soluzione <1 + + >1 + 0 Valore PH < /+ + >9 + 0 Ossigeno <2 + + >2 + + Solfati < > * max. 60 C LEGENDA + buona resistenza in condizioni normali 0 problemi di corrosione possono manifestarsi in particolar modo quando più fattori portano la valutazione 'o' - da evitare
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