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ASTM D5440-93(2009)

(Test Method)

Standard Test Method for Determining the Melting Point of Fats and Oils

Standard Test Method for Determining the Melting Point of Fats and Oils

SIGNIFICANCE AND USE
This test method is intended to determine the melting point of all normal animal and vegetable fats.
The natural fats and oils, that is, those of animal and vegetable origin, are mixtures of glycerides and other substances and consist of a number of components. They do not exhibit either a definite or sharp melting point. Fats pass through a stage of gradual softening before they become completely liquid. The melting point then shall be defined by the specific conditions of the method by which it is determined and, in this case, it shall be the temperature at which the sample becomes perfectly clear and liquid.
SCOPE
1.1 This test method is intended to determine the melting point of all normal animal and vegetable fats and oils. This test method was derived from ALCA H-16.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.

General Information

Status
Historical
Publication Date
31-Mar-2009
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 D5440-93(2003) - Standard Test Method for Determining the Melting Point of Fats and Oils
Effective Date
01-Apr-2009

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ASTM D5440-93(2009) - Standard Test Method for Determining the Melting Point of Fats and OilsASTM D5440-93(2009) - Standard Test Method for Determining the Melting Point of Fats and Oils
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ASTM D5440-93(2009) - Standard Test Method for Determining the Melting Point of Fats and Oils
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D5440 − 93 (Reapproved 2009)
Standard Test Method for
Determining the Melting Point of Fats and Oils
This standard is issued under the fixed designation D5440; 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 4.3 Glass Beaker, 600 mL.
1.1 This test method is intended to determine the melting
4.4 Heat Source, gas burner or electric hot plate.
point of all normal animal and vegetable fats and oils.This test
method was derived from ALCA H-16.
5. Procedure
1.2 The values stated in SI units are to be regarded as
5.1 The sample shall be melted and filtered through filter
standard. No other units of measurement are included in this
paper to remove any impurities and the last traces of moisture.
standard.
The sample shall be absolutely dry. At least three clean
1.3 This standard does not purport to address all of the
capillary tubes shall be dipped in the completely liquid sample
safety concerns, if any, associated with its use. It is the
so that the fat stands approximately 10 mm high in each tube.
responsibility of the user of this standard to establish appro-
One end of the tube (where the sample is located) shall be
priate safety and health practices and determine the applica-
fused in a small flame, taking care not to burn the fat.
bility of regulatory limitations prior to use.
5.2 The tubes shall be placed in a beaker and held in a
refrigerator at 4 to 10°C overnight (16 h).
2. Referenced Documents
5.2.1 Thesamplesshallbecompletelyliquidwhenthetubes
2.1 American Leather Chemists Association Standard:
are placed in the refrigerator. It is good practice to pass the
ALCA H-16 Melting Point
ends of the tubes containing the sample momentarily through
the flame, just before they are taken to the refrigerator.
3. Significance and Use
3.1 This test method is intended to determine the melting 5.3 After removing the tubes from the refrigerator, they
point of all normal animal and vegetable fats. shall be attached to the thermometer, using a rubber band or
any suitable means, so that the lower ends of the melting point
3.2 The natural fats and oils, that is, those of animal and
tubes shall be even with the bottom of the mercury bulb of the
vegetable origin, are mixtures of glycerides and other sub-
thermometer.Thethermometershallbesuspendedina600mL
stances and consist of a number of components. They do not
beaker, which is about half full of clear distilled water and the
exhibit either a definite or sharp melting point. Fats pass
bottom of the thermometer immersed approximately 30 mm.
through a stage of gradual softening before they become
completely liquid. The melting point then shall be defined by
5.4 The starting bath temperature shall be adjusted to 8 to
the specific conditions of the method by which it is determined
10°Cbelowthemeltingpointofthesampleatthebeginningof
and,inthiscase,itshallbethetemperatureatwhichthesample
the test.Agitation of the water bath shall be made with a small
becomes perfectly clear and liquid.
stream of air or other suitab
...

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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
1.1 This specification covers SEBS (styrene-ethylene-butylene-styrene)-modified 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 roof systems.  
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