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ASTM

ASTM D4907-00(2005)

(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 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Aug-2005
ICS
59.140.10 - Processes and auxiliary materials
Technical Committee
D31 - Leather
Drafting Committee
D31.06 - Chemical Analysis
Current Stage
Ref Project

Relations

Replaced By
ASTM D4907-10 - Standard Test Method for Nitrocellulose in Finish on Leather
Effective Date
01-Nov-2010

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ASTM D4907-00(2005) - Standard Test Method for Nitrocellulose in Finish on LeatherASTM D4907-00(2005) - Standard Test Method for Nitrocellulose in Finish on Leather
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ASTM D4907-00(2005) - Standard Test Method for Nitrocellulose in Finish on Leather
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D4907–00(Reapproved2005)
Standard Test Method for
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 (ϵ) indicates an editorial change since the last revision or reapproval.
1. Scope 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
1.1 This test method is intended for use in identifying
dark blue color, then nitrocellulose is not present in the finish.
nitrocellulose in the finish on all types of leathers. This test
Iftheindicatorsolutiondevelopsadarkbluecoloraftercontact
method does not apply to wet blue.
with the finish, it indicates the presence of nitrocellulose or has
1.2 The values stated in SI units are to be regarded as the
developed color from colored finish components, or both.
standard.
6.2 Repeat the above procedure except that the blank
1.3 This standard does not purport to address all of the
solution is employed instead of the indicator solution. If a dark
safety concerns, if any, associated with its use. It is the
blue color does not develop, whereas it does when the indicator
responsibility of the user of this standard to establish appro-
solution is applied, then nitrocellulose is present in the finish
priate safety and health practices and determine the applica-
and colored finishing materials do not interfere.
bility of regulatory limitations prior to use.
6.3 If colored finish material develops a dark blue color in
2. Significance and Use
the presence of the blank solution, then place the specimen
finish side up in a watch glass and pour acetone on the
2.1 This test method is used to identify nitrocellulose in
specimen, until completely covered, for dissolving any nitro-
finishes on all types of leathers.
cellulose present in the specimen.After allowing the specimen
3. Apparatus
to soak in acetone for approximately 2 min, remove the
specimenfromthewatchglassandtheevaporateacetoneinthe
3.1 Borosilicate Glass Watch Glass, 100 mm diameter.
watch glass on the steam oven to dryness. When cooled to
3.2 Reagent Bottles, two, (4 fl oz each) equipped with glass
room temperature, place a few drops of indicator solution on
joint dropping pipet.
one side of the watch glass near the rim and allow the drops to
4. Reagents
run downward.At another location on the watch glass, place a
few drops of blank solution near the rim and allow to run
4.1 Indicator solution prepared by dissolving 0.1 g diphe-
downward. If nitrocellulose is present in the finish, a dark blue
nylamine in solution containing 100 mLof sulfuric acid and 30
color will develop as the indicator solution runs downward into
mL of distilled water.
the
...

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