ASTM D1243-22

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: D1243 − 15 D1243 − 22
Standard Test Method for
1
Dilute Solution Viscosity of Vinyl Chloride Polymers
This standard is issued under the fixed designation D1243; 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 the determination of the dilute solution viscosity of vinyl chloride polymers in cyclohexanone. The
viscosity is expressed in terms of inherent viscosity (logarithmic viscosity number). The test method is limited to those materials
that give clear, uniform solutions at the test dilution.
NOTE 1—Other expressions for viscosity may be used as described in the Appendix, but any change from the test method as specified shall be stated in
the report.
1.2 The values stated in SI units are to be regarded as the standard.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
NOTE 2—This standard and ISO 1628-2 address the same subject matter, but differ in technical content.
NOTE 2—This standard and ISO 1628-2 address the same subject matter, but differ in technical content.
1.4 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:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D446 Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D1755 Specification for Poly(Vinyl Chloride) Resins
D2857 Practice for Dilute Solution Viscosity of Polymers
E2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
Materials.15.07). .
Current edition approved Oct. 1, 2015May 1, 2022. Published October 2015May 2022. Originally approved in 1952. Last previous edition approved in 20142015 as
D1243 - 14.D1243 - 15. DOI: 10.1520/D1243-15.10.1520/D1243-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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 the ASTM website.
*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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D1243 − 22
2.2 ISO Standard:
3
ISO 1628-2 Determination of Viscosity Number and Limiting Viscosity Number—Part 2: Poly(Vinyl Chloride) Resins
4
2.3 National Institute of Standards and Technology Circular:
C-434 Testing of Glass Volumetric Apparatus
3. Terminology
3.1 Definitions—Definitions are in accordance with For definitions of terms pertaining to plastics used in this test method, refer
to Terminology D883 and . For abbreviations used in this test method, refer to Terminology D1600, unless otherwise indicated.
4. Summary of Test Method
4.1 A sample of resin is dissolved in cyclohexanone to make a solution of specified concentration. Inherent viscosity (logarithmic
viscosity number) is calculated from the measured flow times of the solvent and of the polymer solution.
NOTE 3—For additional information, refer to Test Method D445 and Test Method D2857 for Dilute Solution Viscosity of Polymers.
5. Significance and Use
5.1 Dilute solution viscosity values for vinyl chloride polymers are related to the average molecular size of that portion of the
polymer that dissolves in the solvent.
6. Apparatus
6.1 Transfer Pipets.
6.2 Volumetric Flasks, 100-mL, glass-stoppered, in accordance with National Institute of Standards and Technology Circular
C-43
...

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: D1243 − 22
Standard Test Method for
1
Dilute Solution Viscosity of Vinyl Chloride Polymers
This standard is issued under the fixed designation D1243; 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* D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plas-
1.1 This test method covers the determination of the dilute
tics
solution viscosity of vinyl chloride polymers in cyclo-
D1755 Specification for Poly(Vinyl Chloride) Resins
hexanone. The viscosity is expressed in terms of inherent
D2857 Practice for Dilute Solution Viscosity of Polymers
viscosity (logarithmic viscosity number). The test method is
E2251 Specification for Liquid-in-Glass ASTM Thermom-
limited to those materials that give clear, uniform solutions at
eters with Low-Hazard Precision Liquids
the test dilution.
2.2 ISO Standard:
NOTE 1—Other expressions for viscosity may be used as described in
ISO 1628-2 Determination of Viscosity Number and Limit-
the Appendix, but any change from the test method as specified shall be
ing Viscosity Number—Part 2: Poly(Vinyl Chloride) Res-
stated in the report.
3
ins
1.2 The values stated in SI units are to be regarded as the
2.3 National Institute of Standards and Technology Circu-
4
standard.
lar:
1.3 This standard does not purport to address all of the
C-434 Testing of Glass Volumetric Apparatus
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
3.1 Definitions—For definitions of terms pertaining to plas-
mine the applicability of regulatory limitations prior to use.
tics used in this test method, refer to Terminology D883. For
abbreviations used in this test method, refer to Terminology
NOTE 2—This standard and ISO 1628-2 address the same subject
D1600, unless otherwise indicated.
matter, but differ in technical content.
1.4 This international standard was developed in accor-
4. Summary of Test Method
dance with internationally recognized principles on standard-
4.1 A sample of resin is dissolved in cyclohexanone to make
ization established in the Decision on Principles for the
a solution of specified concentration. Inherent viscosity (loga-
Development of International Standards, Guides and Recom-
rithmic viscosity number) is calculated from the measured flow
mendations issued by the World Trade Organization Technical
times of the solvent and of the polymer solution.
Barriers to Trade (TBT) Committee.
NOTE 3—For additional information, refer to Test Method D445 and
2. Referenced Documents
Test Method D2857 for Dilute Solution Viscosity of Polymers.
2
2.1 ASTM Standards:
5. Significance and Use
D445 Test Method for Kinematic Viscosity of Transparent
5.1 Dilute solution viscosity values for vinyl chloride poly-
and Opaque Liquids (and Calculation of Dynamic Viscos-
mers are related to the average molecular size of that portion of
ity)
the polymer that dissolves in the solvent.
D446 Specifications and Operating Instructions for Glass
Capillary Kinematic Viscometers
6. Apparatus
6.1 Transfer Pipets.
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics
6.2 Volumetric Flasks, 100-mL, glass-stoppered, in accor-
and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materi-
dance with National Institute of Standards and Technology
als.
Current edition approved May 1, 2022. Published May 2022. Originally Circular C-434.
approved in 1952. Last previous edition approved in 2015 as D1243 - 15. DOI:
10.1520/D1243-22.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from National Institute of Standards and Technology (NIST), 100
the ASTM website. Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.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
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D1243 − 22
NOTE 5—Keep the Ubbelohde viscometer clean when not in use.
6.3 Viscometer, ASTM Ubbelohde Size 1 or Cannon-
Acetone may be used to flush the pure solvent (Cyclohexanone) and
Ubbeloh
...