ASTM D5355-95(2017)
(Test Method)Standard Test Method for Specific Gravity of Oils and Liquid Fats
Standard Test Method for Specific Gravity of Oils and Liquid Fats
SIGNIFICANCE AND USE
3.1 This test method is used to measure the specific gravity of all oils and liquid fats that are used to soften leather, or that are used in products to soften leather. The specific gravity is one parameter that can be used to monitor the quality of these products.
SCOPE
1.1 This test method covers the determination of the specific gravity of oils and liquid fats by calculating the ratio of the weight of a unit volume of the sample to the weight of a unit volume of water at 25°C.
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.
1.4 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.
General Information
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Designation:D5355 −95 (Reapproved 2017)
Standard Test Method for
Specific Gravity of Oils and Liquid Fats
This standard is issued under the fixed designation D5355; 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 are used in products to soften leather. The specific gravity is
one parameter that can be used to monitor the quality of these
1.1 Thistestmethodcoversthedeterminationofthespecific
products.
gravity of oils and liquid fats by calculating the ratio of the
weight of a unit volume of the sample to the weight of a unit
4. Apparatus
volume of water at 25°C.
4.1 Specific Gravity Bottles, with well-fitting ground glass
1.2 The values stated in SI units are to be regarded as
joints and a capacity of approximately 50 mL.
standard. No other units of measurement are included in this
standard.
4.2 Water Bath, maintained at 25 6 0.2°C.
1.3 This standard does not purport to address all of the
4.3 Water Bath, maintained at 60 6 0.2°C.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.4 Thermometer, laboratory thermometer having a range
priate safety and health practices and determine the applica-
from − 20 to 102°C with 0.1 or 0.2 subdivisions.
bility of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
5. Procedure
dance with internationally recognized principles on standard-
5.1 Calibration of the Specific Gravity Bottles—Clean and
ization established in the Decision on Principles for the
dry thoroughly and then fill with recently boiled and cooled
Development of International Standards, Guides and Recom-
distilled water at 20 to 23°C. Fill the bottle to overflowing by
mendations issued by the World Trade Organization Technical
holdingthebottleonitssideinsuchamannerastopreventthe
Barriers to Trade (TBT) Committee.
entrapment of air bubbles. Insert the stopper and immerse in a
water bath at 25 6 0.2°C. Keep the entire bulb completely
2. Terminology
coveredwithwaterandholdatthespecifiedtemperaturefor30
2.1 Definitions:
min.Carefullyremoveanywaterthathasexudedfromtheside
2.1.1 density—weight/unit volume expressed as grams per
opening.Removethebottlefromthebathandwipecompletely
centimetre.
dry. Weigh the bottle and contents. Calculate the weight of
2.1.2 liquid fats—fats that melt below 58°C. water in the flask by subtracting the weight of the empty bottle
from the weight of the bottle plus the water.
2.1.3 oils—substances that are fluid at 25°C, consisting of
glycerides of fatty acids, aliphatic hydrocarbons, and aromatic
5.2 Specific Gravity at 25/25°C:
hydrocarbons.
5.2.1 Melt the sample and filter through filter paper to
2.1.4 specific gravity—theratioofthedensityofasubstance
remove any impurities and the last traces of moisture. The
to the density of the reference substance.
sample must be completely dry.
5.2.2 Cool the sample from 20 to 23°C and fill the bottle to
3. Significance and Use
overflowing, holding the bottle on its side in such a manner as
to prevent the entrapment of air bubbles.
3.1 This test method is used to measure the
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5355 − 95 (Reapproved 2012) D5355 − 95 (Reapproved 2017)
Standard Test Method for
Specific Gravity of Oils and Liquid Fats
This standard is issued under the fixed designation D5355; 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
1.1 This test method covers the determination of the specific gravity of oils and liquid fats by calculating the ratio of the weight
of a unit volume of the sample to the weight of a unit volume of water at 25°C.
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.
1.4 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.
2. Terminology
2.1 Definitions:
2.1.1 density—weight/unit volume expressed as grams per centimetre.
2.1.2 liquid fats—fats that melt below 58°C.
2.1.3 oils—substances that are fluid at 25°C, consisting of glycerides of fatty acids, aliphatic hydrocarbons, and aromatic
hydrocarbons.
2.1.4 specific gravity—the ratio of the density of a substance to the density of the reference substance.
3. Significance and Use
3.1 This test method is used to measure the specific gravity of all oils and liquid fats that are used to soften leather, or that are
used in products to soften leather. The specific gravity is one parameter that can be used to monitor the quality of these products.
4. Apparatus
4.1 Specific Gravity Bottles, with well-fitting ground glass joints and a capacity of approximately 50 mL.
4.2 Water Bath, maintained at 25 6 0.2°C.
4.3 Water Bath, maintained at 60 6 0.2°C.
4.4 Thermometer, laboratory thermometer having a range from − 20 to 102°C with 0.1 or 0.2 subdivisions.
5. Procedure
5.1 Calibration of the Specific Gravity Bottles—Clean and dry thoroughly and then fill with recently boiled and cooled distilled
water at 20 to 23°C. Fill the bottle to overflowing by holding the bottle on its side in such a manner as to prevent the entrapment
of air bubbles. Insert the stopper and immerse in a water bath at 25 6 0.2°C. Keep the entire bulb completely covered with water
and hold at the specified temperature for 30 min. Carefully remove any water that has exuded from the side opening. Remove the
bottle from the bath and wipe completely dry. Weigh the bottle and contents. Calculate the weight of water in the flask by
subtracting the weight of the empty bottle from the weight of the bottle plus the water.
5.2 Specific Gravity at 25/25°C:
This test method is under the jurisdiction of ASTM Committee D31 on Leather and is the direct
...
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