ASTM D4907-10
(Test Method)Standard Test Method for Nitrocellulose in Finish on Leather
Standard Test Method for Nitrocellulose in Finish on Leather
SIGNIFICANCE AND USE
This test method is used to identify nitrocellulose in finishes on all types of leathers.
SCOPE
1.1 This test method is intended for use in identifying nitrocellulose in the finish on all types of leathers. This test method does not apply to wet blue.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D4907 − 10
StandardTest Method for
1
Nitrocellulose in Finish on Leather
This standard is issued under the fixed designation D4907; 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 5. Test Specimen
2
1.1 This test method is intended for use in identifying 5.1 The test specimen shall be approximately 1 cm of the
nitrocellulose in the finish on all types of leathers. This test finished leather.
method does not apply to wet blue.
6. Procedure
1.2 The values stated in SI units are to be regarded as
6.1 Place the test specimen in the watch glass with the finish
standard. No other units of measurement are included in this
side up. Apply one or 2 mL of indicator solution on the finish
standard.
and allow to run over the side of the leather on to the watch
1.3 This standard does not purport to address all of the
glass. After 3 min, if the indicator solution does not develop a
safety concerns, if any, associated with its use. It is the
dark blue color, then nitrocellulose is not present in the finish.
responsibility of the user of this standard to establish appro-
If the indicator solution develops a dark blue color after contact
priate safety and health practices and determine the applica-
with the finish, it indicates the presence of nitrocellulose or has
bility of regulatory limitations prior to use.
developed color from colored finish components, or both.
6.2 Repeat the above procedure except that the blank
2. Significance and Use
solution is employed instead of the indicator solution. If a dark
2.1 This test method is used to identify nitrocellulose in
blue color does not develop, whereas it does when the indicator
finishes on all types of leathers.
solution is applied, then nitrocellulose is present in the finish
and colored finishing materials do not interfere.
3. Apparatus
6.3 If colored finish material develops a dark blue color in
3.1 Borosilicate Glass Watch Glass, 100 mm diameter.
the presence of the blank solution, then place the specimen
3.2 Reagent Bottles, two, (4 fl oz each) equipped with glass
finish side up in a watch glass and pour acetone on the
joint dropping pipet.
specimen, until completely covered, for dissolving any nitro-
cellulose present in the specimen.After allowing the specimen
4. Reagents
to soak in acetone for approximately 2 min, remove the
specimen from the watch glass and the evaporate acetone in the
4.1 Indicator solution prepared by dissolving 0.1 g diphe-
watch glass on the steam oven to dryness. When cooled to
nylamine in solution containing 100 mLof sulfuric acid and 30
room temperature, place a few drops of indicator solution on
mL of distilled water.
one side of the watch glass near the rim and allow the drops to
4.2 Blank solution comprising 100 mL of sulfuric acid and
run downward. At another location on the watch glass, place a
30 mL of distilled water.
few drops of
...
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:D4907–00(Reapproved2005) Designation: D4907 – 10
Standard Test Method for
1
Nitrocellulose in Finish on Leather
This standard is issued under the fixed designation D4907; 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 is intended for use in identifying nitrocellulose in the finish on all types of leathers. This test method does
not apply to wet blue.
1.2The values stated in SI units are to be regarded as the standard.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Significance and Use
2.1 This test method is used to identify nitrocellulose in finishes on all types of leathers.
3. Apparatus
3.1 Borosilicate Glass Watch Glass, 100 mm diameter.
3.2 Reagent Bottles, two, (4 fl oz each) equipped with glass joint dropping pipet.
4. Reagents
4.1 Indicator solution prepared by dissolving 0.1 g diphenylamine in solution containing 100 mL of sulfuric acid and 30 mL
of distilled water.
4.2 Blank solution comprising 100 mL of sulfuric acid and 30 mL of distilled water.
4.3 Acetone, C.P.
4.4 Hazards Statement—All reagents and chemicals should be handled with care. Before using any chemical, read and follow
all safety precautions and instructions on the manufacturer’s label or MSDS (Material Safety Data Sheet).
5. Test Specimen
2
5.1 The test specimen shall be approximately 1 cm of the finished leather.
6. Procedure
6.1 Place the test specimen in the watch glass with the finish side up.Apply one or 2 mL of indicator solution on the finish and
allow to run over the side of the leather on to the watch glass. After 3 min, if the indicator solution does not develop a dark blue
color, then nitrocellulose is not present in the finish. If the indicator solution develops a dark blue color after contact with the finish,
it indicates the presence of nitrocellulose or has developed color from colored finish components, or both.
6.2 Repeat the above procedure except that the blank solution is employed instead of the indicator solution. If a dark blue color
does not develop, whereas it does when the indicator solution is applied, then nitrocellulose is present in the finish and colored
finishing materials do not interfere.
6.3 If colored finish material develops a dark blue color in the presence of the blank solution, then place the specimen finish
side up in a watch glass and pour acetone on the specimen, until completely covered, for dissolving any nitrocellulose present in
the specimen.After allowin
...
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