ASTM D1644-01(2017)
(Test Method)Standard Test Methods for Nonvolatile Content of Varnishes
Standard Test Methods for Nonvolatile Content of Varnishes
SIGNIFICANCE AND USE
2.1 These test methods are applicable to varnish and are useful to producers and users in determining nonvolatile content and are sometimes an appropriate measure of the film-forming matter in varnish.
SCOPE
1.1 These test methods determine the fraction of a varnish that is nonvolatile at the temperature of the test while volatile solvents are driven off. It is sometimes an approximate measure of the film-forming matter in a varnish.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 a specific statement, see Section 3.
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.
General Information
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Designation: D1644 − 01 (Reapproved 2017)
Standard Test Methods for
1
Nonvolatile Content of Varnishes
This standard is issued under the fixed designation D1644; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope the size of the oven, the type of oven (mechanical or gravity
convection) and the air changes per hour.
1.1 These test methods determine the fraction of a varnish
that is nonvolatile at the temperature of the test while volatile
TEST METHOD A—3 h AT 105°C
solvents are driven off. It is sometimes an approximate
measure of the film-forming matter in a varnish.
4. Procedure
1.2 The values stated in SI units are to be regarded as the
4.1 Place a portion of the thoroughly mixed sample in a
standard. The values given in parentheses are for information
stoppered bottle, or alternatively, in a weighing pipet or a
only.
10-mL syringe without a needle, and from this weigh by
1.3 This standard does not purport to address all of the
difference 1.2 6 0.1 g into a tared flat-bottomed metal or glass
safety concerns, if any, associated with its use. It is the
dish (Note 1), 80 to 100 mm in diameter and 5 to 10 mm in
responsibility of the user of this standard to establish appro-
depth, such as friction-top can covers, ointment boxes, or petri
priate safety and health practices and determine the applica-
dishes.
bility of regulatory limitations prior to use. For a specific
statement, see Section 3.
NOTE 1—The term “tared, flat-bottomed dish” implies that the empty
1.4 This international standard was developed in accor-
dish has no measurable weight change when subjected to the same heat
schedule as prescribed for the dish containing the specimen. If this is
dance with internationally recognized principles on standard-
found to be not so, then more suitable vessels must be found, or
ization established in the Decision on Principles for the
corrections applied.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4.2 By gentle tilting, spread the specimen over the bottom of
Barriers to Trade (TBT) Committee.
the dish and heat for 3 h in a ventilated oven maintained at 105
6 2°C. If necessary, a piece of stout wire can be included in the
2. Significance and Use
tare of the dish and used at intervals to break up skins by
stirring during the heating period. Cool in a desiccator and
2.1 These test methods are applicable to varnish and are
useful to producers and users in determining nonvolatile weigh the dish.
content and are sometimes an appropriate measure of the
film-forming matter in varnish. 5. Calculation
5.1 Calculate the percent of nonvolatile matter NV as
3. Hazards
follows (Note 2):
3.1 Since the flash points of some of the solvents used in
NV5 C 2 A /S × 100 (1)
@~ ! #
coatings and related products are below the temperature of the
test, care should be exercised that the lower explosive limits of
where:
the solvents are not exceeded. The amount of solvent in the
A = weight of dish, g,
oven atmosphere at any one time will depend on the number of
S = weight of specimen used, g, and
tests (pans) in the oven, the percent nonvolatile of the samples,
C = weight of dish and contents after heating, g.
NOTE 2—Determinations of nonvolatile matter by this test method may
give high results due either to incomplete elimination of volatile matter or
1
These test methods are under the jurisdiction of ASTM Committee D01 on
to absorption of oxygen by oxidizing-type varnishes.
Paint and Related Coatings, Materials, and Applications and are the direct
responsibility of Subcommittee D01.21 on Chemical Analysis of Paints and Paint
6. Report
Materials.
Current edition approved July 1, 2017. Published July 2017. Originally approved
6.1 Report the nonvolatile matter of the sample to the
in 1959. Last previous edition approved in 2012 as D1644 – 01 (2012). DOI:
10.1520/D1644-01R17. nearest 0.1 %.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1644 − 01 (2017)
NOTE 3—Specimen size limits may be estimated from the following
TEST METHOD B—10 min at 150°C
table, which was calculated for a material having nonvolatile matter with
a specific gravity of 1.3:
7. Apparatus
Weight of Nonvolatile Residue
7.1 Sample Transfer Device, a 2 or 5-mL Luer syringe. Diameter of Dish 45 mm 100 mm
For a 2.5-mil varnish film 0.12 g 0.60 g
7.2 Solids Dish, made from m
...
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: D1644 − 01 (Reapproved 2012) D1644 − 01 (Reapproved 2017)
Standard Test Methods for
1
Nonvolatile Content of Varnishes
This standard is issued under the fixed designation D1644; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 These test methods determine the fraction of a varnish that is nonvolatile at the temperature of the test while volatile solvents
are driven off. It is sometimes an approximate measure of the film-forming matter in a varnish.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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 a specific statement, see Section 3.
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. Significance and Use
2.1 These test methods are applicable to varnish and are useful to producers and users in determining nonvolatile content and
are sometimes an appropriate measure of the film-forming matter in varnish.
3. Hazards
3.1 Since the flash points of some of the solvents used in coatings and related products are below the temperature of the test,
care should be exercised that the lower explosive limits of the solvents are not exceeded. The amount of solvent in the oven
atmosphere at any one time will depend on the number of tests (pans) in the oven, the percent nonvolatile of the samples, the size
of the oven, the type of oven (mechanical or gravity convection) and the air changes per hour.
TEST METHOD A—3 h AT 105°C
4. Procedure
4.1 Place a portion of the thoroughly mixed sample in a stoppered bottle, or alternatively, in a weighing pipet or a 10-mL syringe
without a needle, and from this weigh by difference 1.2 6 0.1 g into a tared flat-bottomed metal or glass dish (Note 1), 80 to 100
mm in diameter and 5 to 10 mm in depth, such as friction-top can covers, ointment boxes, or petri dishes.
NOTE 1—The term “tared, flat-bottomed dish” implies that the empty dish has no measurable weight change when subjected to the same heat schedule
as prescribed for the dish containing the specimen. If this is found to be not so, then more suitable vessels must be found, or corrections applied.
4.2 By gentle tilting, spread the specimen over the bottom of the dish and heat for 3 h in a ventilated oven maintained at 105
6 2°C. If necessary, a piece of stout wire can be included in the tare of the dish and used at intervals to break up skins by stirring
during the heating period. Cool in a desiccator and weigh the dish.
5. Calculation
5.1 Calculate the percent of nonvolatile matter NV as follows (Note 2):
NV 5 @ C 2 A /S# 3100 (1)
~ !
1
These test methods are under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and are the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
Current edition approved June 1, 2012July 1, 2017. Published July 2012July 2017. Originally approved in 1959. Last previous edition approved in 20062012 as D1644 – 01
(2006).(2012). DOI: 10.1520/D1644-01R12.10.1520/D1644-01R17.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1644 − 01 (2017)
where:
A = weight of dish, g,
S = weight of specimen used, g, and
C = weight of dish and contents after heating, g.
where:
A = weight of dish, g,
S = weight of specimen used, g, and
C = weight of dish and contents after heating, g.
NOTE 2—Determinations of nonvolatile matter by this test method may give high results due either to incomplete elimination of volatile matter or to
absorption of oxygen by oxidizing-type varnishes.
6. Report
6.1
...
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