ASTM D5353-95(2019)

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.
Designation: D5353 − 95 (Reapproved 2019)
Standard Test Method for
Determination of Total Desulfated Fatty Matter
This standard is issued under the fixed designation D5353; 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 3. Significance and Use
1.1 This test method covers the determination of the total 3.1 This test method is intended for the determination of the
desulfated fatty matter in a sample of sulfated oils by decom- totaldesulfatedmattercontainedinsulfatedoilsfollowingtheir
position with diluted mineral acids and extraction of the
total decomposition with dilute mineral acid.
decomposed fat. This test method is not applicable to samples
that are not completely decomposed upon boiling with mineral
4. Reagents
acids. This test method was derived from Test Methods D500,
4.1 Ethyl Ether.
Sections 29 through 32.
4.2 Sulfuric Acid (1+19)—Carefully mix one volume of
1.2 The values stated in SI units are to be regarded as
concentrated sulfuric acid (H SO , sp gr 1.84) into 19 volumes
2 4
standard. No other units of measurement are included in this
of water while stirring.
standard.
1.3 This standard does not purport to address all of the
5. Procedure
safety concerns, if any, associated with its use. It is the
5.1 The procedure consists of decomposing the sample with
responsibility of the user of this standard to establish appro-
H SO , extracting the fatty matter with ether, evaporating the
2 4
priate safety, health, and environmental practices and deter-
solvent, and weighing the residue. After cooling, transfer the
mine the applicability of regulatory limitations prior to use.
titrated solution obtained after determining organically com-
1.4 This international standard was developed in accor-
bined sulfuric anhydride in accordance with Test Method
dance with internationally recognized principles on standard-
D5350 orTest Method D5351 (6.1.2) into a 250-mLseparatory
ization established in the Decision on Principles for the
funnel and shake with 50 mLof ether. Draw off the water layer
Development of International Standards, Guides and Recom-
into another separatory funnel and extract twice with 25-mL
mendations issued by the World Trade Organization Technical
portions of ether. Wash the combined ether layers with 15-mL
Barriers to Trade (TBT) Committee.
portions of water until the wash water is neutral to methyl
orange. Transfer the ether layer to a tared 150-mL beaker,
2. Referenced Documents
evaporate on the water bath until practically free from solvent,
2.1 ASTM Standards:
dry in a hot-air oven at 105 to 110°C for 30 min, cool in a
D500 Test Methods of ChemicalAnalysis of Sulfonated and
desiccator, and weigh. Repeat the he
...