ASTM D5557-95(2011)

Standard Test Method for Determination of Insoluble Impurities Contained in Fats and Oils Used in Fat Liquors and Stuffing Compounds

SIGNIFICANCE AND USE
This test method is intended for the determination of insoluble impurities contained in fats and oils used in the fatliquors and stuffing compounds.
SCOPE
1.1 This test method covers the determination of the amount of impurities that are insoluble in kerosine and petroleum ether contained in fats and oils.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

• Status: Historical
• Publication Date: 31-Dec-2010
• ICS: 59.040 - Textile auxiliary materials
• Technical Committee: D31 - Leather
• Drafting Committee: D31.08 - Fats and Oils

Relations

• Replaces: ASTM D5557-95(2006) - Standard Test Method for Determination of Insoluble Impurities Contained in Fats and Oils Used in Fat Liquors and Stuffing Compounds
• Effective Date: 01-Jan-2011
• Replaced By: ASTM D5557-95(2017) - Standard Test Method for Determination of Insoluble Impurities Contained in Fats and Oils Used in Fat Liquors and Stuffing Compounds
• Effective Date: 01-Apr-2017

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5557 − 95 (Reapproved 2011)
Standard Test Method for
Determination of Insoluble Impurities Contained in Fats and
Oils Used in Fat Liquors and Stuffing Compounds
This standard is issued under the fixed designation D5557; 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 4.2 Filter-Flask, of convenient size and Gooch crucible
adapter.
1.1 This test method covers the determination of the amount
4.3 Petroleum Ether.
of impurities that are insoluble in kerosine and petroleum ether
contained in fats and oils.
4.4 Kerosine, refined petroleum distillate with a flash point
not below 23°C (75°F) as determined by Test Method D56
1.2 The values stated in SI units are to be regarded as the
using the tag closed tester. The kerosine shall be filtered
standard. The values given in parentheses are for information
through a Gooch crucible, prepared as in 4.1, before using.
only.
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 Use the residue from the moisture and volatile determi-
responsibility of the user of this standard to establish appro-
nation (see Test Method D5556) or a sample prepared in the
priate safety and health practices and determine the applica-
same manner.
bility of regulatory limitations prior to use.
5.2 Add to the residue 50 mL of kerosine and, after heating
on a water bath to dissolve the fat, filter through the prepared
2. Referenced Documents
Gooch crucible with the aid of a vacuum. Wash the contents of
2.1 ASTM Standards:
the crucible with five 10 mLportions of hot kerosine, allowing
D56 Test Method for Flash Point by Tag Closed Cup Tester
each portion to drain before adding the next.
D5556 Test Method for Determination of the Moisture and
5.3 Then wash the residue in the crucible thoroughly with
Other Volatile Matter Contained in Fats and Oils Used in
petroleum ether to remove all of the kerosine. Dry the crucible
Fat Liquors and Softening Compounds
and contents to constant weight at 101 6 1°C, cool to room
3. Significance and Use temperature in a desiccator, and weigh.
3.1 This test method is intended for the determination of
6. Calculation and Report
insoluble impurities contained in fats and oils used in the
6.1 Report the calculation of insoluble impurities as per-
fatliquors and stuffing compounds.
centage:
4. Apparatus and Reagents gaininweightofcrucible 3100
% insolubleimpurities 5 (1)
weightofsampletakenformoisture
4.1 Gooch Crucible, prepared with a fine or very fine
6.2 Reference this test method in the test report.
filtering disc (0.7 µm retention value). The filtering disc shall
be washed wi
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