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You are watching: What is the normal freezing point
Freezing suggest is the temperature at which a liquid becomes a hard at normal atmospheric pressure. Alternatively, a melting point is the temperature in ~ which a solid becomes a liquid at regular atmospheric pressure.
A more specific definition of freezing point is the temperature at which solid and liquid phases coexist in equilibrium. The common freezing point is the temperature in ~ which a substance melts (or freezes) at one environment (760 torr = 760 mm Hg = 14.7 psi = 101.3 kPa) that pressure.
Melting points deserve to be figured out by intuitive inspection or by monitoring the temperature the the liquid v time. When the freezing suggest is reached, the temperature the the equipment will no longer drop until all the liquid has frozen.
Melting points may be lowered (depressed) through the enhancement of a soluble product to the solution. The level of lowering depends on the solvent and also is conveniently predicted using a simple equation the is beyond the scope of this resource (see below).
Pay close attention to the temperature units when reporting or reading a melting/freezing point. Many scientific literature uses the Celsius scale whereas (in the US), most consumer products use the Fahrenheit scale. The two are not interchangeable.
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Per postposition D of 29 CFR 1910.1200, the OSHA Hazard communication Standard (HCS), the melting/freezing allude is a required piece of data on a security Data Sheet. Presume the sheet was issued because 2015 and also is GHS-compliant, you will discover this data provided in ar 9 that the SDS. Before HCS 2012, there was no legally forced format because that (M)SDS"s and this item of data, while still required, could appear anywhere in the document.
HCS 2012 does no specify temperature units. Typically, you will find both Fahrenheit and Celsius on one SDS, but this is not always be the case, specifically for laboratory chemicals, for this reason be certain that you understand which scale is gift used!
The freezing/melting suggest is critical material residential or commercial property to know and the SDS is your primary source for this information. Some products must it is in prevented from freeze to safeguard their truth or the product packaging. Likewise, many (but no all) materials increase when heated above their melting allude and might overflow or burst your container. Likewise, aqueous services tend to expand when they freeze which can likewise burst the container.
See also: boiling point, Vapor pressure.Additional definitions from Google and OneLook.
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