ASTM D5353-95(2001)
(Test Method)Standard Test Method for Determination of Total Desulfated Fatty Matter
Standard Test Method for Determination of Total Desulfated Fatty Matter
SCOPE
1.1 This test method covers the determination of the total desulfated fatty matter in a sample of sulfated oils by decomposition with diluted mineral acids and extraction of the decomposed fat. This test method is not applicable to samples that are not completely decomposed upon boiling with mineral acids. This test method was derived from Test Methods D500, Sections 29 through 32.
1.2 The values stated in SI units are to be regarded as the standard.
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.
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Designation:D5353–95 (Reapproved 2001)
Standard Test Method for
Determination of Total Desulfated Fatty Matter
This standard is issued under the fixed designation D 5353; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4.2 Sulfuric Acid (1 + 19)—Carefully mix one volume of
concentrated sulfuric acid (H SO , sp gr 1.84) into 19 volumes
1.1 This test method covers the determination of the total 2 4
of water while stirring.
desulfated fatty matter in a sample of sulfated oils by decom-
position with diluted mineral acids and extraction of the
5. Procedure
decomposed fat. This test method is not applicable to samples
5.1 The procedure consists of decomposing the sample with
that are not completely decomposed upon boiling with mineral
H SO , extracting the fatty matter with ether, evaporating the
2 4
acids. This test method was derived from Test Methods D 500,
solvent, and weighing the residue. After cooling, transfer the
Sections 29 through 32.
titrated solution obtained after determining organically com-
1.2 The values stated in SI units are to be regarded as the
bined sulfuric anhydride in accordance with Test Method
standard.
D 5350 or Test Method D 5351 (6.1.2) into a 250-mL separa-
1.3 This standard does not purport to address all of the
tory funnel and shake with 50 mL of ether. Draw off the water
safety concerns, if any, associated with its use. It is the
layer into another separatory funnel and extract twice with
responsibility of the user of this standard to establish appro-
25-mL portions of ether. Wash the combined ether layers with
priate safety and health practices and determine the applica-
15-mL portions of water until the wash water is neutral to
bility of regulatory limitations prior to use.
methyl orange. Transfer the ether layer to a tared 150-mL
2. Referenced Documents beaker, evaporate on the water bath until practically free from
solvent, dry in a hot-air oven at 105 to 110°C for 30 min, cool
2.1 ASTM Standards:
in a desiccator, and weigh. Repeat the heating for 30-min
D 500 Test Methods of Chemical Analysis of Sulfonated
periods until constant weight is obtained.
and Sulfated Oils
D 5350 Test Method for the Determination of Organically
NOTE 1—Reserve the extracted fatty matter for the subsequent deter-
Combined Sulfuric Anhydride by Titration, Test Method
mination of u
...
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