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ASTM D5555-95(2011)

(Test Method)

Standard Test Method for Determination of Free Fatty Acids Contained in Animal, Marine, and Vegetable Fats and Oils Used in Fat Liquors and Stuffing Compounds

Standard Test Method for Determination of Free Fatty Acids Contained in Animal, Marine, and Vegetable Fats and Oils Used in Fat Liquors and Stuffing Compounds

SIGNIFICANCE AND USE
This test method is intended for the determination of the free fatty acids contained in animal, marine, and vegetable fats and oils for the purpose of quality assurance.
SCOPE
1.1 This test method covers the determination of the free fatty acid content of 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
67.200.10 - Animal and vegetable fats and oils
Technical Committee
D31 - Leather
Drafting Committee
D31.08 - Fats and Oils
Current Stage
Ref Project

Relations

Replaces
ASTM D5555-95(2006) - Standard Test Method for Determination of Free Fatty Acids Contained in Animal, Marine, and Vegetable Fats and Oils Used in Fat Liquors and Stuffing Compounds
Effective Date
01-Jan-2011
Replaced By
ASTM D5555-95(2017) - Standard Test Method for Determination of Free Fatty Acids Contained in Animal, Marine, and Vegetable Fats and Oils Used in Fat Liquors and Stuffing Compounds
Effective Date
01-Apr-2017

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ASTM D5555-95(2011) - Standard Test Method for Determination of Free Fatty Acids Contained in Animal, Marine, and Vegetable Fats and Oils Used in Fat Liquors and Stuffing CompoundsASTM D5555-95(2011) - Standard Test Method for Determination of Free Fatty Acids Contained in Animal, Marine, and Vegetable Fats and Oils Used in Fat Liquors and Stuffing Compounds
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ASTM D5555-95(2011) - Standard Test Method for Determination of Free Fatty Acids Contained in Animal, Marine, and Vegetable Fats and Oils Used in Fat Liquors and Stuffing Compounds
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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: D5555 − 95 (Reapproved 2011)
Standard Test Method for
Determination of Free Fatty Acids Contained in Animal,
Marine, and Vegetable Fats and Oils Used in Fat Liquors
and Stuffing Compounds
This standard is issued under the fixed designation D5555; 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. Procedure
1.1 This test method covers the determination of the free 4.1 Use Table 1 to determine the quantities to be used with
fatty acid content of fats and oils. various ranges of fatty acids.
1.2 The values stated in SI units are to be regarded as the 4.2 The sample shall be entirely liquid and well mixed
standard. The values given in parentheses are for information before weighing. Then weigh the designated sample size into
only. an oil-sample bottle or Erlenmeyer flask; add to that the
specified amount of hot, neutralized alcohol and 2 mL of
1.3 This standard does not purport to address all of the
indicator.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.3 Shaking vigorously, make the titration with alkali to the
priate safety and health practices and determine the applica-
appearance of the first permanent pink color of the same
bility of regulatory limitations prior to use.
intensity as that of the neutralized alcohol before adding the
sample. The color shall persist for 30 s.
2. Significance and Use
5. Calculation and Report
2.1 This test method is intended for the determination of the
5.1 Report the free fatty acids in percent, by weight:
free fatty acids contained in animal, marine, and vegetable fats
and oils for the purpose of quality assurance.
mL of alkali 3N 328.2
% free fatty acids 5 (1)
weight of sample
3. Apparatus and Reagents
5.2 Reference this test method in the test report.
3.1 OilSampleBottles, 115 or 230 mL(4 or 8 oz) or 250 mL
5.3 The free fatty acids are frequently expressed in terms of
Erlenmeyer flasks.
acid value instead of percent free fatty acids. The acid value is
3.2 Ethyl Alcohol, 95 %. The alcohol shall give a definite,
defined as the number of milligrams of KOH necessary to
distinct, and sharp end-point with phenolphthalein and shall be
neutralize1gof sample. To convert percent free fatty acids (as
neutralized with alkali to a faint but permanent pink color just
oleic) to acid value, multiply the former by 1.99.
before using. (Isopropanol, 99 %, may be used as an alternate
6. Precision and Bias
solvent with crude and refined vegetable oils.)
6.1 This test method is adopted from the procedures of the
3.
...

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This specification covers SEBS (styrene-ethylenebutylene-styrene)-modified mopping asphalt intended for use in built-up roof construction, construction of some modified bitumen systems, construction of bituminous vapor retarder systems, and for adhering insulation boards used in various types of roofing systems. This specification is intended as a material specification and issues regarding the suitability of specific roof constructions or application techniques are beyond its scope. The specified tests and property values are intended to establish minimum properties. In place system design criteria or performance attributes are factors beyond the scope of this specification. The base asphalt shall be prepared from crude petroleum and the SEBS-modified asphalt shall incorporate sufficient SEBS as the primary polymeric modifier. The SEBS modified asphalt shall be homogeneous and free of water and shall conform to the prescribed physical properties including (1) softening point before and after heat exposure, (2) softening point change, (3) flash point, (4) penetration before and after heat exposure, (5) penetration change, (6) solubility in trichloroethylene, (7) tensile elongation, (8) elastic recovery, and (9) low temperature flexibility. The sampling and test methods to determine compliance with the specified physical properties, as well as the evaluation for stability during heat exposure are detailed.
SCOPE
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