ASTM D5355-95(2012)

Standard Test Method for Specific Gravity of Oils and Liquid Fats

SIGNIFICANCE AND USE
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.

General Information

• Status: Historical
• Publication Date: 31-Mar-2012
• ICS: 75.080 - Petroleum products in general
• Technical Committee: D31 - Leather
• Drafting Committee: D31.08 - Fats and Oils

Relations

• Replaces: ASTM D5355-95(2006) - Standard Test Method for Specific Gravity of Oils and Liquid Fats
• Effective Date: 01-Apr-2012
• Referred By: ASTM D7666-12(2019) - Standard Specification for Triglyceride Burner Fuel
• Effective Date: 01-Apr-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5355 −95 (Reapproved 2012)
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 4.2 Water Bath, maintained at 25 6 0.2°C.
1.1 Thistestmethodcoversthedeterminationofthespecific
4.3 Water Bath, maintained at 60 6 0.2°C.
gravity of oils and liquid fats by calculating the ratio of the
4.4 Thermometer, laboratory thermometer having a range
weight of a unit volume of the sample to the weight of a unit
from − 20 to 102°C with 0.1 or 0.2 subdivisions.
volume of water at 25°C.
1.2 The values stated in SI units are to be regarded as
5. Procedure
standard. No other units of measurement are included in this
5.1 Calibration of the Specific Gravity Bottles—Clean and
standard.
dry thoroughly and then fill with recently boiled and cooled
1.3 This standard does not purport to address all of the
distilled water at 20 to 23°C. Fill the bottle to overflowing by
safety concerns, if any, associated with its use. It is the
holdingthebottleonitssideinsuchamannerastopreventthe
responsibility of the user of this standard to establish appro-
entrapment of air bubbles. Insert the stopper and immerse in a
priate safety and health practices and determine the applica-
water bath at 25 6 0.2°C. Keep the entire bulb completely
bility of regulatory limitations prior to use.
coveredwithwaterandholdatthespecifiedtemperaturefor30
min.Carefullyremoveanywaterthathasexudedfromtheside
2. Terminology
opening.Removethebottlefromthebathandwipecompletely
2.1 Definitions:
dry. Weigh the bottle and contents. Calculate the weight of
2.1.1 density—weight/unit volume expressed as grams per
water in the flask by subtracting the weight of the empty bottle
centimetre.
from the weight of the bottle plus the water.
2.1.2 liquid fats—fats that melt below 58°C.
5.2 Specific Gravity at 25/25°C:
2.1.3 oils—substances that are fluid at 25°C, consisting of
5.2.1 Melt the sample and filter through filter paper to
glycerides of fatty acids, aliphatic hydrocarbons, and aromatic
remove any impurities and the last traces of moisture. The
hydrocarbons.
sample must be completely dry.
2.1.4 specific gravity—theratioofthedensityofasubstance
5.2.2 Cool the sample from 20 to 23°C and fill the bottle to
to the density of the reference substance.
overflowing, holding the bottle on its side in such a manner as
to prevent the entrapment of air bubbles.
3. Significance and Use
5.2.3 Insertthestopper,immerse,andholdinthewaterbath
3.1 This test method is used to measure the specific gravity
at 25 6 0.2°C for 30 min.
of all oils and liquid fats that are used to soften leather, or that
5.2.4 Carefully wipe off any oil that has come through the
are used in products to soften leather. The specific gravity is
capillary opening and remove from the bath. Clean and dry
one parameter that can be used to monit
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