ASTM D6875-23

Standard Test Method for Solidification Point of Industrial Organic Chemicals by Thermistor

SIGNIFICANCE AND USE
5.1 This test method may be used for process control during the manufacture of organic chemicals described in Section 1, for setting specifications, for development and research work, and to determine if contamination was introduced during shipment.
SCOPE
1.1 This test method covers a general procedure for determining the solidification point of most organic chemicals having appreciable heats of fusion and solidification points between 4 °C and 41 °C.
Note 1: Other test methods for determining freeze point and solidification point of aromatic hydrocarbons include Test Methods D852, D1015, D1016, D3799, D4493, and D6269.  
1.2 This test method is applicable to relatively pure compounds only. Solidification point depression is dependent on impurity concentrations.  
1.3 The following applies to all specified limits in this test method: for purposes of determining conformance with applicable specifications using 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 E29.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Section 8, Hazards.  
1.6 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

• Status: Published
• Publication Date: 31-Mar-2023
• ICS: 71.080.01 - Organic chemicals in general
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.04 - Instrumental Analysis

Relations

• Refers: ASTM D3852-20 - Standard Practice for Sampling and Handling Phenol, Cresols, and Cresylic Acid
• Effective Date: 01-Jun-2020

Standards Content (Sample)

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: D6875 − 23
Standard Test Method for
Solidification Point of Industrial Organic Chemicals by
1
Thermistor
This standard is issued under the fixed designation D6875; 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* 2. Referenced Documents
2
1.1 This test method covers a general procedure for deter- 2.1 ASTM Standards:
mining the solidification point of most organic chemicals D852 Test Method for Solidification Point of Benzene
having appreciable heats of fusion and solidification points D1015 Test Method for Freezing Points of High-Purity
3
between 4 °C and 41 °C. Hydrocarbons (Withdrawn 2019)
D1016 Test Method for Purity of Hydrocarbons from Freez-
NOTE 1—Other test methods for determining freeze point and solidifi-
3
cation point of aromatic hydrocarbons include Test Methods D852, ing Points (Withdrawn 2019)
D1015, D1016, D3799, D4493, and D6269.
D3437 Practice for Sampling and Handling Liquid Cyclic
Products
1.2 This test method is applicable to relatively pure com-
D3438 Practice for Sampling and Handling Naphthalene,
pounds only. Solidification point depression is dependent on
Maleic Anhydride, and Phthalic Anhydride
impurity concentrations.
D3799 Test Method for Purity of Styrene by Freezing Point
3
1.3 The following applies to all specified limits in this test
Method (Withdrawn 2000)
method: for purposes of determining conformance with appli-
D3852 Practice for Sampling and Handling Phenol, Cresols,
cable specifications using this test method, an observed value
and Cresylic Acid
or a calculated value shall be rounded off “to the nearest unit”
D4297 Practice for Sampling and Handling Bisphenol A(4,4'
in the last right hand digit used in expressing the specification
-Isopropylidinediphenol)
limit, in accordance with the “rounding-off method” of Practice
D4493 Test Method for Solidification Point of Bisphenol
E29.
A(4,4'-Isopropylidenediphenol)
D6269 Test Method for Solidification Point of p-Xylene
1.4 The values stated in SI units are to be regarded as
3
(Withdrawn 2004)
standard. No other units of measurement are included in this
D6809 Guide for Quality Control and Quality Assurance
standard.
Procedures for Aromatic Hydrocarbons and Related Ma-
1.5 This standard does not purport to address all of the
terials
safety concerns, if any, associated with its use. It is the
E29 Practice for Using Significant Digits in Test Data to
responsibility of the user of this standard to establish appro-
Determine Conformance with Specifications
priate safety, health, and environmental practices and deter-
2.2 Other Documents:
mine the applicability of regulatory limitations prior to use.
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
For a specific hazard statement, see Section 8, Hazards.
4
1910.1200
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3. Terminology
ization established in the Decision on Principles for the
3.1 Definitions:
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
1
This test method is under the jurisdiction of ASTM Committee D16 on the ASTM website.
3
Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsi- The last approved version of this historical standard is referenced on
bility of Subcommittee D16.04 on Instrumental Analysis. www.astm.org.
4
Current edition approved April 1, 2023. Published April 2023. Originally Available from U.S. Government Printing Office Superintendent of Documents,
approved in 2003. Last previous edition approved in 2018 as D6875 – 18. DOI: 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
10.1520/D6875-23. www.access.gpo.gov.
*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
1

---------------------- Page: 1 ----------------------
D6875 − 23
3.1.1 solidification point, n—an empirical constant defined 8.3 A fume hood should be used when performing the test
as the temperature at which the liquid phase of a substance is method on
...

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: D6875 − 18 D6875 − 23
Standard Test Method for
Solidification Point of Industrial Organic Chemicals by
1
Thermistor
This standard is issued under the fixed designation D6875; 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 a general procedure for determining the solidification point of most organic chemicals having
appreciable heats of fusion and solidification points between 4 and 41°C.4 °C and 41 °C.
NOTE 1—Other test methods for determining freeze point and solidification point of aromatic hydrocarbons include Test Methods D852, D1015, D1016,
D3799, D4493, and D6269.
1.2 This test method is applicable to relatively pure compounds only. Solidification point depression is dependent on impurity
concentrations.
1.3 The following applies to all specified limits in this test method: for purposes of determining conformance with applicable
specifications using 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 E29.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. For a specific hazard statement, see Section 8, Hazards.
1.6 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. Referenced Documents
2
2.1 ASTM Standards:
D852 Test Method for Solidification Point of Benzene
3
D1015 Test Method for Freezing Points of High-Purity Hydrocarbons (Withdrawn 2019)
3
D1016 Test Method for Purity of Hydrocarbons from Freezing Points (Withdrawn 2019)
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D3438 Practice for Sampling and Handling Naphthalene, Maleic Anhydride, and Phthalic Anhydride
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of
Subcommittee D16.04 on Instrumental Analysis.
Current edition approved Jan. 1, 2018April 1, 2023. Published January 2018April 2023. Originally approved in 2003. Last previous edition approved in 20122018 as
D6875 – 12.D6875 – 18. DOI: 10.1520/D6875-18.10.1520/D6875-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
*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
1

---------------------- Page: 1 ----------------------
D6875 − 23
3
D3799 Test Method for Purity of Styrene by Freezing Point Method (Withdrawn 2000)
D3852 Practice for Sampling and Handling Phenol, Cresols, and Cresylic Acid
D4297 Practice for Sampling and Handling Bisphenol A(4,4' -Isopropylidinediphenol)
D4493 Test Method for Solidification Point of Bisphenol A(4,4'-Isopropylidenediphenol)
3
D6269 Test Method for Solidification Point of p-Xylene (Withdrawn 2004)
D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
2.2 Other Documents:
4
OSHA Regulations, 29 CFR paragraphs 1910.1000 and 1910.1200
3. Terminology
3.1 Definitions:
3.1.1 solidification point, n—an empirical constant defined as the temperature at which the liquid phase of a substance is in
approximate equilibrium with a relatively small portion
...