ASTM D3673-89(2003)
(Test Method)Standard Test Methods for Chemical Analysis of Alpha Olefin Sulfonates
Standard Test Methods for Chemical Analysis of Alpha Olefin Sulfonates
SIGNIFICANCE AND USE
This method is suitable as a quality control test for the measurement of color in alpha olefin sulfonates.
SCOPE
1.1 These test methods cover the chemical analysis of alpha olefin sulfonates. The analytical procedures appear in the following order:
SectionsMoisture by the Distillation Method4-8Sodium Sulfate9-14Neutral Oil15-19Chlorides Calculated as Sodium Chloride (NaCl)20-24Alkalinity25-29pH30 and 31Determination of Color32-37Determination of Active Content by Methylene Blue Titration38-47
1.2 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. For specific precaution statement see . Material safety data sheets are available for reagents and materials. Review them for hazards prior to usage.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D3673 – 89 (Reapproved 2003)
Standard Test Methods for
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Chemical Analysis of Alpha Olefin Sulfonates
This standard is issued under the fixed designation D3673; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Reagents of the American Chemical Society, where such
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specifications are available. Other grades may be used, pro-
1.1 These test methods cover the chemical analysis of alpha
vided it is first ascertained that the reagent is of sufficiently
olefin sulfonates. The analytical procedures appear in the
high purity to permit its use without lessening the accuracy of
following order:
the determination.
Sections
3.2 Unless otherwise indicated, references to water shall be
Moisture by the Distillation Method 4-8
Sodium Sulfate 9-14
understood to mean Type III reagent water conforming to
Neutral Oil 15-19
Specification D1193.
Chlorides Calculated as Sodium Chloride (NaCl) 20-24
Alkalinity 25-29
MOISTURE BY THE DISTILLATION
pH 30 and 31
Determination of Color 32-37
METHOD
Determination of Active Content by Methylene Blue Titration 38-47
4. Apparatus
1.2 This standard does not purport to address all of the
4.1 The apparatus required shall consist of a glass flask
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- heated by suitable means and provided with a reflux condenser
discharging into a trap and connected to the flask. The
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific connections between the trap and the condenser and flask shall
beinterchangeablegroundjoints.Thetrapservestocollectand
precaution statement see 36.1. Material safety data sheets are
available for reagents and materials. Review them for hazards measure the condensed water and to return the solvent to the
prior to usage. flask.Asuitable assembly of the apparatus is illustrated in Fig.
1.
2. Referenced Documents
4.1.1 Flask, 1-L capacity, either the short-neck, round-
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2.1 ASTM Standards:
bottom type, or the Erlenmeyer type.
D1172 Guide for pH of Aqueous Solutions of Soaps and 4.1.2 Heat Source—Either an oil bath (for example, stearic
Detergents acid or paraffin wax) or an electric heater provided with a
D1193 Specification for Reagent Water sliding rheostat or other means of heat control.
D1209 Test Method for Color of Clear Liquids (Platinum- 4.1.3 Condenser—A water-cooled glass reflux condenser
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Cobalt Scale) (Fig. 1), having a jacket approximately 15 ⁄4 in. (400 mm) in
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D3049 Test Method for Synthetic Anionic Ingredient by length, with an inner tube ⁄8 to ⁄2 in. (9.5 to 12.7 mm) in
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Cationic Titration outside diameter, and not less than ⁄4 in. (6.35 mm) in inside
diameter. The end of the condenser to be inserted in the trap
3. Purity of Reagents
may be ground off at an angle of 30° from the vertical axis of
3.1 Reagent-grade chemicals shall be used in all tests. the condenser. When inserted into the trap, the tip of the
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Unless otherwise indicated, it is intended that all reagents shall
condenser shall be about ⁄4 in. (7 mm) above the surface of the
conform to the specifications of the Committee on Analytical liquid in the trap after the distillation conditions have been
established. Fig. 1 shows a conventional sealed-in type of
condenser, but any other condenser fulfilling the detailed
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requirements of this paragraph may be used.
These test methods are under the jurisdiction of ASTM Committee D12 on
Soaps and Other Detergents, and are the direct responsibility of Subcommittee
D12.12 on Analysis of Soaps and Synthetic Detergents.
Current edition approved May 26, 1989. Published July 1989. Originally
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published as D3673 – 78. Last previous edition D3673 – 87. DOI: 10.1520/D3673- Reagent Chemicals, American Chemical Society Specifications, American
89R03. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
the ASTM website. MD.
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