ASTM D5560-95
(Test Method)Standard Test Method for Determination of Neutral Fatty Matter Contained in Fats and Oils
Standard Test Method for Determination of Neutral Fatty Matter Contained in Fats and Oils
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1.1 This test method covers all degraded glycerides, since they are neutral fats. However, this procedure does not necessarily determine all the mono and diglycerides that may be present in the sample. This is due to the water soluble characteristics of some mono and diglycerides.
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: D 5560 – 95
Standard Test Method for
Determination of Neutral Fatty Matter Contained in Fats and
Oils
This standard is issued under the fixed designation D 5560; 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 4.4 Petroleum Ether.
4.5 Phenolphthalein Indicator.
1.1 This test method covers all degraded glycerides, since
4.6 Ethyl Alcohol, denatured.
they are neutral fats. However, this procedure does not neces-
sarily determine all the mono and diglycerides that may be
5. Procedure
present in the sample. This is due to the water soluble
5.1 Weigh5gof sample into a 125-mL assay flask and add
characteristics of some mono and diglycerides.
50 mL of alcohol. Warm and rotate, if necessary, to dissolve.
1.2 The values stated in SI units are to be regarded as the
Titrate with 0.5 N NaOH to end point using phenolphthalein
standard.
indicator. Cool, then add 1 mL excess 0.5 N NaOH and rotate
1.3 This standard does not purport to address all of the
flask. Extract three times with 50-mL portions of petroleum
safety concerns, if any, associated with its use. It is the
ether and wash combined ether layers with water until free
responsibility of the user of this standard to establish appro-
from alkali. Evaporate ether and dry to constant weight.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6. Calculation
2. Referenced Documents 6.1 Calculate the total neutral oily matter as follows:
weight of residue 3 100
2.1 ASTM Standards:
total neutral oily matter 5 (1)
weight of sample
D 5553 Test Method for Determination of the Unsaponifi-
able Nonvolatile Matter in Sulfated Oils
6.2 Determine the total neutral oily matter including unsa-
ponifiables, if any, as in Test Method D 5553, and subtract to
3. Significance and Use
obtain neutral fatty matter.
3.1 This test method is intended for the determination of the
7. Precision and Bias
neutral fatty matter contained in fats and oils by means of ether
extraction.
7.1 This test method is adopted from the procedures of the
American Leather Chemists Association where it has
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