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ASTM International - ASTM D2024-09(2017)

Standard Test Method for Cloud Point of Nonionic Surfactants

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Organization: ASTM International
Publication Date: 1 April 2017
Status: active
Page Count: 2
ICS Code (Surface active agents): 71.100.40
significance And Use:

3.1 The cloud point temperature is a reproducible characteristic of certain pure nonionic surfactants. It is also characteristic of certain nonionic surfactant formulated systems. This... View More

scope:

1.1 This test method covers a procedure to determine the "cloud point" of nonionic surfactants or detergent systems. Cloud Point is the temperature at which dissolved components (solids or liquids) are no longer completely soluble, precipating as a second phase giving the fluid a cloudy appearance. It is limited to those surfactants and detergent systems for which the visible solubility change occurs over a range of 1°C or less at concentrations of 0.5 to 1.0 % in DI water between 30 and 95°C.

1.2 Chemical Limitations-Nonionic surfactants that exhibit a characteristic cloud point in general terms consist of a water-in-soluble moiety condensed with 50 to 75 % by weight of ethylene oxide. If the level of ethoxylation is too low the surfactant may not be water soluble at temperatures less than 30°C, and if it is too high no cloud point may exist.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM D2024-09(2017)
April 1, 2017
Standard Test Method for Cloud Point of Nonionic Surfactants
1.1 This test method covers a procedure to determine the “cloud point” of nonionic surfactants or detergent systems. Cloud Point is the temperature at which dissolved components (solids or liquids)...
October 1, 2009
Standard Test Method for Cloud Point of Nonionic Surfactants
1.1 This test method covers a procedure to determine the “cloud point” of nonionic surfactants or detergent systems. Cloud Point is the temperature at which dissolved components (solids or liquids)...
January 1, 1992
Standard Test Method for Cloud Point of Nonionic Surfactants
1.1 This test method covers the determination of the solubility inversion temperature or "cloud point" of nonionic surfactants or detergent systems which are characteristically less soluble in water...
August 31, 1965
Standard Test Method for Cloud Point of Nonionic Surfactants
1.1 This test method covers the determination of the solubility inversion temperature or "cloud point" of nonionic surfactants or detergent systems which are characteristically less soluble in water...
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