ASTM-D2024 2009
$35.75
D2024-09 Standard Test Method for Cloud Point of Nonionic Surfactants
| Published By | Publication Date | Number of Pages |
| ASTM | 2009 | 2 |
ASTM D2024-09
Historical Standard: Standard Test Method for Cloud Point of Nonionic Surfactants
ASTM D2024
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.
Keywords
Cloud point; Nonionic surfactants; Solubility; Surfactants; Temperature tests
ICS Code
ICS Number Code 71.100.40 (Surface active agents)
DOI: 10.1520/D2024-09
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