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Isopropanol (2-Propanol) based Freeze Protected Water Solutions

Freezing and flash points of isopropanol (2-Propanol) based water solutions or brines.

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Isopropyl alcohol is also commonly used as a cleaner and solvent in industry. It is also used as a gasoline additive for dissolving water or ice in fuel lines.

Freezing Point of Isopropanol (2-Propanol) based Water Solutions

Freezing Point
Isopropanol Concentration
(% by volume)
Temperature oF 32 25 20 5 0 -5 -10 -20 -35 -70 -130
oC 0 -4 -7 -15 -18 -21 -23 -29 -37 -57 -90

Flash Points of Isopropanol (2-Propanol) based Water Solutions

The flash point of a chemical is the lowest temperature where it will evaporate enough fluid to form a combustible concentration of gas. The flash point is an indication of how easy a chemical may burn.

Flash Point
Isopropanol Concentration
(% by volume)
Temperature oF - 105 85 75 70 65 65 65 65 65 53
oC - 41 29 24 21 18 18 18 18 18 12

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