ASTM D6875-12

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 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 and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Section 8, Hazards.

General Information

• Status: Historical
• Publication Date: 30-Nov-2012
• ICS: 71.080.01 - Organic chemicals in general
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.04 - Instrumental Analysis

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6875 −12
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* D1015 Test Method for Freezing Points of High-Purity
Hydrocarbons
1.1 This test method covers a general procedure for deter-
D1016 Test Method for Purity of Hydrocarbons from Freez-
mining the solidification point of most organic chemicals
ing Points
having appreciable heats of fusion and solidification points
D3437 Practice for Sampling and Handling Liquid Cyclic
between 4 and 41°C.
Products
NOTE 1—Other test methods for determining freeze point and solidifi-
D3438 Practice for Sampling and Handling Naphthalene,
cation point of aromatic hydrocarbons include Test Methods D852,
D1015, D1016, D3799, D4493, and D6269.
Maleic Anhydride, and Phthalic Anhydride
D3799 Test Method for Purity of Styrene by Freezing Point
1.2 This test method is applicable to relatively pure com-
3
Method (Withdrawn 2000)
pounds only. Solidification point depression is dependent on
D3852 Practice for Sampling and Handling Phenol, Cresols,
impurity concentrations.
and Cresylic Acid
1.3 The following applies to all specified limits in this test
D4297 Practice for Sampling and Handling Bisphenol A
method: for purposes of determining conformance with appli-
(4,4' -Isopropylidinediphenol)
cable specifications using this test method, an observed value
D4493 Test Method for Solidification Point of Bisphenol A
or a calculated value shall be rounded off “to the nearest unit”
(4,4'-Isopropylidenediphenol)
in the last right hand digit used in expressing the specification
D6269 Test Method for Solidification Point of p-Xylene
limit,inaccordancewiththe“rounding-offmethod”ofPractice
3
(Withdrawn 2004)
E29.
D6809 Guide for Quality Control and Quality Assurance
1.4 The values stated in SI units are to be regarded as
Procedures for Aromatic Hydrocarbons and Related Ma-
standard. No other units of measurement are included in this
terials
standard.
E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 2.2 Other Documents:
OSHA Regulations, 29 CFR paragraphs 1910.1000 and
responsibility of the user of this standard to establish appro-
4
priate safety and health practices and determine the applica- 1910.1200
bility of regulatory limitations prior to use. For a specific
3. Terminology
hazard statement, see Section 8, Hazards.
3.1 Definitions:
2. Referenced Documents 3.1.1 solidification point, n—an empirical constant defined
2
as the temperature at which the liquid phase of a substance is
2.1 ASTM Standards:
in approximate equilibrium with a relatively small portion of
D852 Test Method for Solidification Point of Benzene
the solid phase.
3.1.1.1 Discussion—Solidification point as distinguished
from freezing point is described in Test Method D1015.An
1
This test method is under the jurisdiction of ASTM Committee D16 on
interpretation of mole percent in terms of freezing point is
Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of
given in Test Method D1016.
Subcommittee D16.04 on Instrumental Analysis.
Current edition approved Dec. 1, 2012. Published January 2013. Originally
approved in 2003. Last previous edition approved in 2008 as D6875 – 08. DOI:
3
10.1520/D6875-12. The last approved version of this historical standard is referenced on
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.astm.org.
4
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. 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 ----------------------
D6875−12
4. Summary of Test Method 8.2 Appropriate personal protection equipment such as
gloves, safety glasses, a long rubber apron, and a full face
4.1 The solidification point is measured by noting the
shield should be worn when handling hot or corrosive
maximum temperature reached during a cooling cycle after the
chemicals, or both.
appearance of a solid phase.
...

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 − 08 D6875 − 12
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 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.
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 and health practices and determine the applicability of regulatory
limitations prior to use. For a specific hazard statement, see Section 8, Hazards.
2. Referenced Documents
2
2.1 ASTM Standards:
D852 Test Method for Solidification Point of Benzene
D1015 Test Method for Freezing Points of High-Purity Hydrocarbons
D1016 Test Method for Purity of Hydrocarbons from Freezing Points
D3437 Practice for Sampling and Handling Liquid Cyclic Products
D3438 Practice for Sampling and Handling Naphthalene, Maleic Anhydride, and Phthalic Anhydride
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:
1
This test method is under the jurisdiction of ASTM Committee D16 on Aromatic Hydrocarbons and Related Chemicals and is the direct responsibility of Subcommittee
D16.04 on Instrumental Analysis.
Current edition approved Oct. 1, 2008Dec. 1, 2012. Published November 2008January 2013. Originally approved in 2003. Last previous edition approved in 20032008
as D6875 - 03.D6875 – 08. DOI: 10.1520/D6875-08.10.1520/D6875-12.
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.
4
Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
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 − 12
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 of the solid phase.
3.1.1.1 Discussion—
Solidification point as distinguished from freezing point is described in Test Method D1015. An interpretation of mole percent in
terms of freezing point is given in Test Method D1016.
...