Temperature at which an oil sample becomes clouded by the formation of wax crystals. Clouding is characteristic of paraffinic oils.
The temperature at which a cloud of wax crystals appears when a lubricant or distillate fuel is cooled under standard conditions. Indicates the tendency of the material to plug filters or small orifices under cold weather conditions.
A measure of the ability of a diesel fuel to operate under cold weather conditions. Defined as the temperature at which wax first becomes visible when diesel fuel is cooled under standardized test conditions (ASTM D2500).
the temperature at which the first signs of wax precipitation appear in an oil.
A term used in reference to detergents and in some cases waxes. Cloud point refers to the upper temperature limit at which an ingredient in a solution may separate out (precipitate). Both powders and liquids can have "cloud points," but generally, liquids have more of a tendency to "cloud out" at high temperatures. Clouding is problematic because once a chemical component falls out of a solution, that solution it can lose a considerable amount of its cleaning ability. In addition, after precipitating, the chemical is usually "locked out" and is unable to reenter a homogenous solution. Most quality products should be able to withstand being heated to 140° F. More inferior products can cloud at 120° F or even lower temperatures.
The temperature at which a surfactant becomes insoluble in water. This becomes important when designing detergents for use in hot water.
The lowest temperature at which diesel oil tends to thicken and cloud up.
Temperature at which wax begins to crystallize from a distillate fuel.
the temperature at which wax in diesel fuel becomes cloudy when it is cooled. Wax is inherent in diesel fuel. As the fuel is cooled, the wax will crystallize forming platelets that clog fuel filters. Typical diesel fuels will fail at temperatures near the cloud point. RoadForce is specially formulated to operate well below the cloud point. This is accomplished with wax crystal modifier additives that break down the wax into microscopic fragments allowing them to pass through the fuel filter.
The temperature at which the first wax crystals appear and a standardized ASTM test protocol is used to determine this temperature.
temperature at which wax begins to separate from the oil when cooled; indicated by appearance of cloud or haze
The Cloud point of a nonionic surfactant or glycol solution is the temperature where the mixture starts to phase separate and two phases appear, thus becoming cloudy. This behavior is characteristic of non-ionic surfactants containing polyoxyethylene chains, which exhibit reverse solubility versus temperature behavior in water and therefore "cloud out" at some point as the temperature is raised. Glycols demonstrating this behavior are known as "cloud-point glycols" and are used as shale inhibitors.
