ASTM D2764-20
(Test Method)Standard Test Method for Dimethylformamide-Insoluble (DMF-I) Content of Tar and Pitch
Standard Test Method for Dimethylformamide-Insoluble (DMF-I) Content of Tar and Pitch
SIGNIFICANCE AND USE
4.1 This test method is useful in evaluating and characterizing tars and pitches and as one element in establishing the uniformity of shipments or sources of supply. It is a rapid and reasonably accurate measure of the toluene insoluble (TI) content of tar and pitch Test Method D4072.
SCOPE
1.1 This test method covers the determination of the dimethylformamide-insoluble matter (DMF-I) in tar and pitch.
1.2 Since this test method is empirical, strict adherence to all details of the procedure is necessary.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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 specific hazard information, see Sections 6 and 7.
1.5 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.
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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: D2764 − 20
Standard Test Method for
Dimethylformamide-Insoluble (DMF-I) Content of Tar and
1
Pitch
This standard is issued under the fixed designation D2764; 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* 3. Summary of Test Method
1.1 This test method covers the determination of the 3.1 A sample is digested in hot DMF and filtered. Any
dimethylformamide-insoluble matter (DMF-I) in tar and pitch. insoluble matter is washed, dried, and weighed.
1.2 Since this test method is empirical, strict adherence to
4. Significance and Use
all details of the procedure is necessary.
4.1 This test method is useful in evaluating and character-
1.3 The values stated in inch-pound units are to be regarded
izing tars and pitches and as one element in establishing the
as standard. The values given in parentheses are mathematical
uniformity of shipments or sources of supply. It is a rapid and
conversions to SI units that are provided for information only
reasonably accurate measure of the toluene insoluble (TI)
and are not considered standard.
content of tar and pitch Test Method D4072.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Apparatus
responsibility of the user of this standard to establish appro-
5.1 FilteringCrucible, porcelain, with fine-porosity bottom,
priate safety, health, and environmental practices and deter-
30 mL to 40 mL capacity, high form, maximum pore diameter
mine the applicability of regulatory limitations prior to use.
7 µm.
For specific hazard information, see Sections 6 and 7.
1.5 This international standard was developed in accor-
5.2 Filter Apparatus—Filter flask and tube with crucible
dance with internationally recognized principles on standard- adapter.
ization established in the Decision on Principles for the
5.3 Sieves, U.S. Standard 600 µm (No. 30) and 250 µm (No.
Development of International Standards, Guides and Recom-
60), conforming to Specification E11.
mendations issued by the World Trade Organization Technical
5.4 Water Bath, maintained at 203 °F to 212 °F (95 °C to
Barriers to Trade (TBT) Committee.
100 °C).
2. Referenced Documents
6. Reagents and Materials
2
2.1 ASTM Standards:
6.1 Dimethylformamide, reagent grade, boiling range 4 °F
D329 Specification for Acetone
(2 °C) including 307 °F (153 °C). Store over a suitable desic-
D370 Practice for Dehydration of Oil-Type Preservatives
cant. Decant immediately before use. If necessary, filter
D4072 Test Method for Toluene-Insoluble (TI) Content of
through a plug of glass wool or absorbent cotton until optically
Tar and Pitch
clear.
D4296 Practice for Sampling Pitch
E11 Specification for Woven Wire Test Sieve Cloth and Test
6.2 Acetone, meeting Specification D329.(Warning—
Sieves
Flammable. Health hazard.)
6.3 Concentrated Hydrochloric Acid.
6.4 Celite Analytical Filter Aid (CAFA)—Dry to constant
1
This test method is under the jurisdiction of ASTM Committee D02 on
mass at 22 °F (105 °C) and store in tightly stoppered container.
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
SubcommitteeD02.05onPropertiesofFuels,PetroleumCokeandCarbonMaterial.
NOTE 1—Do not use any other grade of filtering medium because
Current edition approved June 1, 2020. Published June 2020. Originally
porosities differ.
ɛ1
approved in 1968. Last previous edition approved in 2015 as D2764 – 99 (2015) .
DOI: 10.1520/D2764-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Hazards
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 Fumes of the solvents should be removed by means of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. proper hoods from all working areas. The working area should
*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 ----------------------
D2764 − 20
be kept free of sparks and flames. DMF fumes should not be 11. Crucible Preparation
inhaled, and prolonged contact of DMF with the skin should be
11.1 If the crucible, after thorough cleaning (11.2), has been
avoided.
used for less than six determinations, clean it as follows.
7.2 Observe proper laboratory procedures for handling and
Remove the mat, w
...
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.
´1
Designation: D2764 − 99 (Reapproved 2015) D2764 − 20
Standard Test Method for
Dimethylformamide-Insoluble (DMF-I) Content of Tar and
1
Pitch
This standard is issued under the fixed designation D2764; 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
ε NOTE—SI units formatting was corrected editorially in May 2015.
1. Scope Scope*
1.1 This test method covers the determination of the dimethylformamide-insoluble matter (DMF-I) in tar and pitch.
1.2 Since this test method is empirical, strict adherence to all details of the procedure is necessary.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 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. For specific hazard information, see Sections 6 and 7.
1.5 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:
D329 Specification for Acetone
D370 Practice for Dehydration of Oil-Type Preservatives
D4072 Test Method for Toluene-Insoluble (TI) Content of Tar and Pitch
D4296 Practice for Sampling Pitch
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Summary of Test Method
3.1 A sample is digested in hot DMF and filtered. Any insoluble matter is washed, dried, and weighed.
4. Significance and Use
4.1 This test method is useful in evaluating and characterizing tars and pitches and as one element in establishing the uniformity
of shipments or sources of supply. It is a rapid and reasonably accurate measure of the toluene insoluble (TI) content of tar and
pitch Test Method D4072.
5. Apparatus
5.1 Filtering Crucible, porcelain, with fine-porosity bottom, 30 mL to 40 mL capacity, high form, maximum pore diameter
7 μm.
5.2 Filter Apparatus—Filter flask and tube with crucible adapter.
5.3 Sieves, U.S. Standard 600 μm (No. 30) and 250 μm (No. 60), conforming to Specification E11.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
Current edition approved April 1, 2015June 1, 2020. Published May 2015June 2020. Originally approved in 1968. Last previous edition approved in 20092015 as
ɛ1
D2764 – 99 (2009).(2015) . DOI: 10.1520/D2764-99R15E01. 10.1520/D2764-20.
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
1
---------------------- Page: 1 ----------------------
D2764 − 20
5.4 Water Bath, maintained at 203 °F to 212 °F (95 °C to 100 °C).
6. Reagents and Materials
6.1 Dimethylformamide, reagent grade, boiling range 4 °F (2 °C) including 307 °F (153 °C). Store over a suitable desiccant.
Decant immediately before use. If necessary, filter through a plug of glass wool or absorbent cotton until optically clear.
6.2 Acetone, meeting Specification D329. (Warning—Flammable. Health hazard.)
6.3 Concentrated Hydrochloric Acid.
6.4 Celite Analytical Filter Aid (CAFA)—Dry to constant mass at 22 °F (105 °C) and store in tightly stoppered container.
NOTE 1—Do not use any other grade of filtering medium because porosities differ.
7. Hazards
7.1 Fumes of the solvents should be removed by means of proper hoods from all working areas. The working area should be
kept free of sparks and flames. DMF fumes should not be
...
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