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ASTM D4906-95(2012)

(Test Method)

Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials

Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials

SIGNIFICANCE AND USE
This test method is intended for use in determining the total solids content and the ash content of a finishing material before its use on any leather.
SCOPE
1.1 This test method covers the total solids and ash content of finishing materials.
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.

General Information

Status
Historical
Publication Date
31-Mar-2012
ICS
59.140.10 - Processes and auxiliary materials
Technical Committee
D31 - Leather
Drafting Committee
D31.06 - Chemical Analysis
Current Stage
Ref Project

Relations

Replaces
ASTM D4906-95(2006) - Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials
Effective Date
01-Apr-2012

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ASTM D4906-95(2012) - Standard Test Method for Total Solids and Ash Content in Leather Finishing MaterialsASTM D4906-95(2012) - Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials
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ASTM D4906-95(2012) - Standard Test Method for Total Solids and Ash Content in Leather Finishing Materials
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D4906 − 95 (Reapproved 2012)
Standard Test Method for
Total Solids and Ash Content in Leather Finishing Materials
This standard is issued under the fixed designation D4906; 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 at 93°C. (If two ovens at different temperatures are not
available, increase the temperature in the first oven for the 2-h
1.1 This test method covers the total solids and ash content
heating.)
of finishing materials.
5.1.2 Remove the dishes from the oven, place them in a
1.2 The values stated in SI units are to be regarded as
desiccator for1hto cool to room temperature and weigh.
standard. No other units of measurement are included in this
Return the dishes to the oven for1hat 93°C and, after cooling
standard.
in a desiccator for 1 h, weigh again.
1.3 This standard does not purport to address all of the
5.1.3 If the weight loss in the 1-h drying period did not
safety concerns, if any, associated with its use. It is the
change the total solids percentage more than 0.1 %, report the
responsibility of the user of this standard to establish appro-
results. If greater than 0.1 % loss was obtained from the last
priate safety and health practices and determine the applica-
1-h drying period, then repeat the drying until the change is
bility of regulatory limitations prior to use.
less than 0.1 %.
5.2 Ash:
2. Significance and Use
5.2.1 Place each platinum dish, containing the residue from
2.1 This test method is intended for use in determining the
the total solids determination, in a muffle furnace at 600°C 6
total solids content and the ash content of a finishing material
25°C for 2 h.
before its use on any leather.
5.2.2 If difficulty is encountered in completely burning off
the carbon, leach the residue with hot water (filtering through
3. Apparatus
ashless filter paper) and further ignite this residue in the muffle
3.1 Two Tared Platinum Dishes.
furnace.
3.2 Drying Oven, that operates at 43°C 6 3°C and 93°C 6
5.2.3 To the dish containing the cooled ash, add the filtrate;
3°C.
evaporatetodrynessandheatfor30minat600°C 625°C.The
3.3 Desiccator, with calcium chloride or other desiccant. product shall then be cooled in a dessicator and weighed.
3.4 Muffle Furnace, capable of maintaining temperatures of
6. Calculation
(600°C 6 25°C).
6.1 The percent total solids of the finishing material shall be
4. Sampling
calculated as follows:
4.1 One 5- g and one 10-g sample of the finishing material
A
Total solids, percent 5 3100 (1)
shall be weighed with accuracy to within 0.001 g.
B
where:
5. Procedure
A = final weight of solid matter after drying, and
5.1 Total Solids:
B = the original weight of the sample.
5.1.
...

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