ASTM D5551-95(2006)

Standard Test Method for Determination of the Cloud Point of Oil

SIGNIFICANCE AND USE
This test method is intended to determine the cloud point of oils used in the softening and stuffing of leather, as well as those used in the manufacture of products for such purpose. The cloud point of oils is measured for the purpose of quality assurance.
SCOPE
1.1 This test method covers the determination of the cloud point of oils used in the softening and stuffing of leather and in the manufacture of fat liquors and other softening and stuffing compounds. This test method was derived from Test Methods D97 and D2500.  
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-Mar-2006
• ICS: 75.080 - Petroleum products in general
• Technical Committee: D31 - Leather
• Drafting Committee: D31.08 - Fats and Oils

Relations

• Replaces: ASTM D5551-95(2001) - Standard Test Method for Determination of the Cloud Point of Oil
• Effective Date: 01-Apr-2006
• Replaced By: ASTM D5551-95(2012) - Standard Test Method for Determination of the Cloud Point of Oil
• 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5551–95 (Reapproved 2006)
Standard Test Method for
Determination of the Cloud Point of Oil
This standard is issued under the fixed designation D5551; 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
1.1 This test method covers the determination of the cloud
pointofoilsusedinthesofteningandstuffingofleatherandin
the manufacture of fat liquors and other softening and stuffing
compounds. This test method was derived from Test Methods
D97 and D2500.
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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D97 Test Method for Pour Point of Petroleum Products
D2500 Test Method for Cloud Point of Petroleum Products
E1 Specification for ASTM Liquid-in-Glass Thermometers NOTE 1—All dimensions in millimetres.
FIG. 1 Apparatus for Cloud Point Test
3. Terminology
5. Apparatus
3.1 cloud point—that temperature, expressed as a multiple
of 1°C (2°F), at which a cloud or haze of wax crystals appears
5.1 Test Jar, clear cylindrical glass, flat bottom, 30- to
at the bottom of the test jar when the oil is cooled under
33.5-mm inside diameter, and 115- to 125-mm height. To
prescribed conditions.
indicate sample height the jar should be marked with a line 54
6 3 mm above the inside bottom.
4. Significance and Use
5.2 Thermometers, having ranges shown below and con-
4.1 This test method is intended to determine the cloud
forming to the requirements prescribed in Specification E1 for
point of oils used in the softening and stuffing of leather, as
thermometers:
well as those used in the manufacture of products for such
Thermometer
purpose.Thecloudpointofoilsismeasuredforthepurposeof
Temperature Number
Thermometer Range ASTM IP
quality assurance.
High cloud and pour −38 to +50°C 5C 1C
Low cloud and pour −80 to +20°C 6C 2C
Melting point +32 to +127°C 61C 63C
ThistestmethodisunderthejurisdictionofASTMCommitteeD31onLeather
and is the direct responsibility of Subcommittee D31.08 on Fats and Oils. This test
5.2.1 Since separation of liquid column thermometers occa-
method was developed in cooperation with the American Leather Chemists Assn.
sionally occurs and may escape detection, thermometers
(Method H18-1957).
should be checked immediately prior to the test and used only
Current edition approved April 1, 2006. Published April 2006. Originally
if they prove accurate within 6 1°C (for example, ice point).
approved in 1994. Last previous edition approved in 2001 as D5551–95(2001).
DOI: 10.1520/D5551-95R06.
5.3 Cork, to fit the test jar, bored centrally for the test
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
thermometer.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.4 Jacket, metal or glass, watertight, cylindrical, flat bot-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tom, 115 mm in depth, 42- to 50-mm inside diameter. It must
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D5551–95 (2006)
besupportedfirmlyinaverticalpositioninthecoolingbathof thermometer so that the cork fits tightly, the thermometer and
5.7 so that not more than 25 mm projects out of the cooling the jar are coaxial, and the thermometer bulb is resting on the
medium. bottom of the jar.
5.5 Disk, cork or felt, 6 mm thick, to fit loosely inside the
NOTE 2—Since separation of the mercury or toluene thread of cloud
jacket.
and pour thermometers occasionally occurs, and since such separation
5.6 Gasket, to fit snugly around the outside of the test jar
may otherwise escape immediate detection, it is suggested that the ice
and loosely inside the jacket. The gasket may be made of
points of the thermometers be checked immediately prior to the test.Any
rubber, leather, or other material that is elastic enough to cling thermometer that shows as ice point differing from 0°C (32°F) by more
than1°C(2°F)shouldbefurtherexaminedorrecalibrated,orboth,before
to the test jar and hard enough to hold its shape. Its purpose is
use.
to prevent the test jar from touching the jacket.
5.7 Bath or Baths, maintained at prescribed temperatures
7.4 Place the disk in the bottom of the jacket. Place the ring
with a firm support to hold the jacket vertical. The required
gasket around the test jar, 25 mm (1 in.) from the bottom. The
bath temperatures may be obtained by refrigeration if avail-
disk, gasket, and inside of the jacket shall be clean and dry.
able, otherwise by suitable freezing mixtures. Freezing mix-
Insert the test jar in the jacket.
tures commonly used for temperatures down to those shown
7.5 Maintain the temperature of the cooling bath at−1
are as follows:
to+2°C (30 to 35°F). Support the jacket containing the test jar
For Tempera-
firmlyinaverticalpositioninthecoolingbathsothatnotmore
tures Down
than 25 mm (1 in.) of the jacket projects out of the cooling
Ice and water 9°C
Crushed ice and sodium chloride crystals −12°C medium.
Crushed ice and calcium chloride crystals −27°C
7.6 At each test thermometer reading that is a multiple of
Acetone or petroleum naphtha (see Section 6) chilled in a −57°C
1°C (2°F), remove the test jar from the jacket quickly but
covered metal beaker with an ice-salt mixture to −12°C then
with enough solid carbon dioxide to give the desired temper-
without disturbing the oi
...