ASTM D852-02

Standard Test Method for Solidification Point of Benzene

SIGNIFICANCE AND USE
This test method may be used as a criteria for determining the purity of benzene. The closer the solidification point reaches that of pure benzene, the purer the sample.
SCOPE
1.1 This test method covers the determination of the solidification point of benzene.
1.2 The following applies to all specified limits in this test method: for purposes of determining conformance with this test method, an observed value or a calculated value shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E 29.
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. For specific hazard statements, see Section 7.

General Information

• Status: Historical
• Publication Date: 09-Aug-2002
• ICS: 71.080.15 - Aromatic hydrocarbons
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.01 - Benzene, Toluene, Xylenes, Cyclohexane and Their Derivatives

Relations

• Replaced By: ASTM D852-08 - Standard Test Method for Solidification Point of Benzene
• Effective Date: 15-Jul-2008
• Referred By: ASTM D2359-19 - Standard Specification for Refined Benzene-535
• Effective Date: 10-Aug-2002
• Referred By: ASTM D4734-20 - Standard Specification for Refined Benzene-545
• Effective Date: 10-Aug-2002
• Referred By: ASTM D7185-19 - Standard Specification for Low Toluene Low Dioxane (LTLD) Benzene
• Effective Date: 10-Aug-2002
• Referred By: ASTM D5871-19 - Standard Specification for Benzene for Cyclohexane Feedstock
• Effective Date: 10-Aug-2002
• Referred By: ASTM E324-23 - Standard Test Method for Relative Initial and Final Melting Points and the Melting Range of Organic Chemicals
• Effective Date: 10-Aug-2002
• Referred By: ASTM D6875-23 - Standard Test Method for Solidification Point of Industrial Organic Chemicals by Thermistor
• Effective Date: 10-Aug-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 852 – 02
Standard Test Method for
1
Solidification Point of Benzene
This standard is issued under the fixed designation D 852; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope * OSHA Regulations, 29CFR, paragraphs 1910.1000 and
7
1910.1200
1.1 This test method covers the determination of the solidi-
fication point of benzene.
3. Terminology
1.2 In determining the conformance of the test results using
3.1 Definitions:
this method to applicable specifications, results shall be
3.1.1 solidification point—an empirical constant defined as
rounded off in accordance with the rounding-off method of
the temperature at which the liquid phase of a substance is in
Practice E 29.
approximate equilibrium with a relatively small portion of the
1.3 This standard does not purport to address all of the
solid phase.
safety concerns, if any, associated with its use. It is the
3.1.1.1 Discussion—Solidification point is distinguished
responsibility of the user of this standard to establish appro-
from freezing point which is described inTest Method D 1015.
priate safety and health practices and determine the applica-
An interpretation of mol percent purity in terms of freezing
bility of regulatory limitations prior to use. For specific hazard
point is given in Test Method D 1016.
statements, see Section 7.
4. Summary of Test Method
2. Referenced Documents
4.1 Solidification point is measured by noting the maximum
2.1 ASTM Standards:
temperature reached during a controlled cooling cycle after the
D 1015 Test Method for Freezing Points of High-Purity
2 appearance of a solid phase.
Hydrocarbons
D 1016 Test Method for Purity of Hydrocarbons from
5. Significance and Use
2
Freezing Points
3 5.1 This test method may be used as a criteria for determin-
D 1193 Specification for Reagent Water
ing the purity of benzene. The closer the solidification point
D 3437 Practice for Sampling and Handling Liquid Cyclic
4 reaches that of pure benzene, the purer the sample.
Products
5
E 1 Specification for ASTM Thermometers
6. Apparatus
E 29 Practice for Using Significant Digits in Test Data to
6.1 Benzene Container (Air Jacketed):
6
Determine Conformance with Specifications
6.1.1 Inner Container,atesttube15mminoutsidediameter
E 691 Practice for Conducting an Interlaboratory Study to
and 125 mm in length.
6
Determine the Precision of a Test Method
6.1.2 Air Jacket, a standard test tube 25 mm in outside
2.2 Other Document:
diameter and 150 mm in length.
6.1.3 Insulation— Dry absorbent cotton or glass wool.
6.2 Benzene Container (thick walled), a glass test tube 18
1
This test method is under the jurisdiction of ASTM Committee D16 on mminoutsidediameter,14mmininsidediameterand150mm
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
in length. The thick walled tube is only compatible with the
Subcommittee D16.01 on Benzene, Toluene, Xylenes, Cyclohexane, and Their
thermistor.
Derivatives.
6.3 Ice Bath, a 1-L beaker, or similar suitable container,
Current edition approved Aug. 10, 2002. Published October 2002. Originally
e1
published as D 852 – 45. Last previous edition D 852 – 00 .
having an effective depth of at least 127 mm and filled with
2
Annual Book of ASTM Standards, Vol 05.01.
chipped or shaved ice.
3
Annual Book of ASTM Standards, Vol 11.01.
4
Annual Book of ASTM Standards, Vol 06.04.
5
Annual Book of ASTM Standards, Vol 14.03.
7
6 AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Annual Book of ASTM Standards, Vol 14.02.
732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D852–02
6.4 Stirrer, consisting of a 1-mm wire (copper or stainless 7. Hazards
steel) or a 2-mm glass rod with one end bent into a circular
7.1 ConsultthelatestOSHAregulations,supplier’sMaterial
form at right angles to the shaft so that it will move freely in
Safety Data Sheets, and local regulations for all materials used
the annular space between the thermometer stem and the wall
in this test method.
of the smaller test tube.
8. Sampling
6.5 Temperature Measurement Device, either device de-
scribed below has been found satisfactory.
8.1 Sample the material in accordance with Practice
6.5.1 Thermometer, an ASTM Benzene Freezing Point
D 3437.
Thermometer having a range from 4.0 to 6.0°C and conform-
9. Preparation of Apparatus
ing to the requirements forThermometer
...