ASTM D5346-17(2021)

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.
Designation: D5346 − 17 (Reapproved 2021)
Standard Test Method for
Determination of the Pour Point of Petroleum Oil Used in
Fatliquors and Softening Compounds
This standard is issued under the fixed designation D5346; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Significance and Use
3.1 This test method is intended to determine the pour point
1.1 This test method covers the determination of the pour
of petroleum oils used in the softening and stuffing of leather,
point of petroleum oils used in the softening and stuffing of
as well as those used in the manufacture of products for such
leather, and in the manufacture of fatliquors and other soften-
purpose. The pour point of petroleum oils is measured for the
ingandstuffingcompounds.Thistestmethodwasderivedfrom
purpose of quality assurance.
Test Method D97 and ALCA Method H-18.
1.2 The values stated in SI units are to be regarded as
4. Apparatus (see Fig. 1)
standard. No other units of measurement are included in this
4.1 Test Jar, clear cylindrical glass, flat bottom, 30 to
standard.
33.5-mm inside diameter, and 115 to 125-mm height. To
indicate sample height the jar should be marked with a line
1.3 This standard does not purport to address all of the
54mm 63mm above the inside bottom.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.2 Thermometers, having ranges shown below and con-
priate safety, health, and environmental practices and deter-
forming to the requirements prescribed in Specifications E1 or
mine the applicability of regulatory limitations prior to use.
E2251 for thermometers:
1.4 This international standard was developed in accor-
Temperature Thermometer Number
Thermometer Range ASTM IP
dance with internationally recognized principles on standard-
High cloud and pour −38 to +50 °C 5C or S5C 1C
ization established in the Decision on Principles for the
Low cloud and pour −80 to +2 °C 6C 2C
Development of International Standards, Guides and Recom-
Melting point +32 to +127 °C 61C 63C
mendations issued by the World Trade Organization Technical
4.2.1 Since separation of liquid column thermometers occa-
Barriers to Trade (TBT) Committee.
sionally occurs and may escape detection, thermometers
should be checked immediately prior to the test and used only
2. Referenced Documents
if they prove accurate within 6 1 °C (for example ice point).
2.1 ASTM Standards:
4.3 Cork, to fit the test jar, bored centrally for the test
D97Test Method for Pour Point of Petroleum Products
thermometer.
E1Specification for ASTM Liquid-in-Glass Thermometers
4.4 Jacket, metal or glass, watertight, cylindrical, flat
E2251Specification for Liquid-in-Glass ASTM Thermom-
bottom, 115 mm in depth, 42 mm to 50 mm inside diameter. It
eters with Low-Hazard Precision Liquids
must be supported firmly in a vertical position in the cooling
2.2 Other Document:
bath of 4.7 so that not more than 25 mm projects out of the
ALCA Method H-18Cloud and Pour Point
cooling medium.
4.5 Disk, cork or felt, 6 mm thick to fit loosely inside the
jacket.
ThistestmethodisunderthejurisdictionofASTMCommitteeD31onLeather
4.6 Gasket, to fit snugly around the outside of the test jar
and is the direct responsibility of Subcommittee D31.08 on Fats and Oils.
and loosely inside the jacket. The gasket may be made of
Current edition approved Dec. 1, 2021. Published January 2022. Originally
approved in 1993. Last previous edition approved in 2017 as D5346–17. DOI:
rubber, leather, or other material that is elastic enough to cling
10.1520/D5346-17R21.
to the test jar and hard enough to hold its shape. Its purpose is
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
to prevent the test jar from touching the jacket.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
4.7 Bath or Baths, maintained at prescribed temperatures
the ASTM website.
with a firm support to hold the jacket vertical. The required
Available fromAmerican Leather ChemistsAssn., Texas Tech University, P.O.
Box 45300, Lubbock, TX 79409. bath temperatures may be obtained by refrigeration if
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5346 − 17 (2021)
NOTE 1—Dimensions are in millimetres.
FIG. 1 Apparatus for Pour Point Test
available, otherwise by suitable freezing mixtures. Freezing 5.1.3 Alcohol, Methanol. (Warning—Flammable. Vapor
mixtures commonly used for temperatures down to those harmful.)
shown are as follows: 5.1.4 Petroleum Naphtha. (Warning—Combustible. Vapor
harmful.)
For Temperatures Down
Ice and water 9 °C
5.1.5 Solid Carbon Dioxide. (Warning—Extremely
Crushed ice and sodium chloride crystals −12 °C
cold−78.5 °C.)
Crushed ice and calcium chloride crystals −27 °C
Acetone or petroleum naphtha (see Section 5) chilled −57 °C
6. Procedure
in a covered metal beaker with an ice-salt mixture
to − 12 °C then with enough solid carbon dioxide to
6.1 Pour the oil into the test jar to the level mark. When
give the desired temperature.
necessary,heattheoilinawaterbathuntilitisjustsufficiently
NOTE 1—There are automatic pour point testers available and in use
fluid to pour into the test jar.
which may be advantageous in the saving of test time, permit the use of
NOTE 2—When it is known that a sample has been heated to a
smaller samples, and have other factors which may merit their use. If
temperature higher than 45 °C during the preceding 24 h or when the
automatic testers are used, the user must ensure that all of the manufac-
thermal history of the sample is not known, keep the sample at room
turer’s instructions for calibration, adjustment and operation of the
temperature for 24 h before testing it.
instrument are followed. It must be reported that the pour point was
determined by an automatic instrument. Precision of automatic pour point
6.2 Close the test jar with the cork carrying the high-pour
testers has not been determined. In any case of dispute, the pour point as
thermometer (4.2). In the case of pour points above 36 °C, use
determinedbythemanualmethoddescribedhereinshallbeconsideredthe
a higher range thermometer such as IP 3C or ASTM 61C.
reference test.
Adjustthepositionofthecorkandthermometersothecorkfits
5. Reagents and Materials
tightly, the thermometer and the jar are coaxial, and the
thermometerbulbisimmersedsothebeginningofthecapillary
5.1 The following solvents of technical grade are appropri-
is
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