ASTM D1331

These test methods cover the determination of surface tension and interfacial tension of solutions of surface-active agents using a tensiometer. Method A covers aqueous solutions of surface-active agents, but is also applicable to non-aqueous solutions and mixed solvent solutions. Method B is applicable to two-phase solutions. More than one solute component may be present, including solute components that are not in themselves surface-active.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 These test methods cover the determination of surface tension and interfacial tension of solutions of surface-active agents, as defined in Terminology D 459. Two methods are covered as follows:

Method A—Surface Tension.

Method B—Interfacial Tension.

1.2 Method A is written primarily to cover aqueous solutions of surface-active agents, but is also applicable to nonaqueous solutions and mixed solvent solutions.

1.3 Method B is applicable to two-phase solutions. More than one solute component may be present, including solute components that are not in themselves surface-active.

1.4 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. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.

2. Referenced Documents

D459 Terminology Relating to Soaps and Other Detergents

Index Terms

alibration; tensiometer for surface/interfacial tension of solutions of; surface-active agents, test,; detergent materials/systems-surfactants; interfacial tension; surface analysis; tensiometer; tension (tensile) properties/tests-surface tension; Number Code 71.100.40 (Surface active agents)

Citing ASTM Standards

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