Standard Test Method for Determination of Magnesium Sulfate (Epsom Salt) in Leather

SIGNIFICANCE AND USE
This test method distinguishes magnesium sulfate from other water soluble non-tanning salts found in leather.
SCOPE
1.1 This test method covers quantitatively determining the magnesium sulfate (epsom salt) in leather.
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-2009
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM D6017-97(2009) - Standard Test Method for Determination of Magnesium Sulfate (Epsom Salt) in 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D6017 − 97(Reapproved 2009)
Standard Test Method for
Determination of Magnesium Sulfate (Epsom Salt) in
Leather
This standard is issued under the fixed designation D6017; 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 4.3 Suction Flask.
1.1 This test method covers quantitatively determining the 4.4 Muffle Furnace.
magnesium sulfate (epsom salt) in leather.
5. Reagents
1.2 The values stated in SI units are to be regarded as
5.1 Hydrochloric Acid, specific gravity 1.19.
standard. No other units of measurement are included in this
standard.
5.2 Nitric Acid, specific gravity 1.42.
1.3 This standard does not purport to address all of the
5.3 Ammonium Chloride.
safety concerns, if any, associated with its use. It is the
5.4 AmmoniumHydroxide,1to1and1to9partsbyvolume
responsibility of the user of this standard to establish appro-
with distilled water.
priate safety and health practices and determine the applica-
5.5 Ammonium Nitrate Solution, 10 g dissolved in distilled
bility of regulatory limitations prior to use.
water and made up to 100 mL.
2. Referenced Documents
5.6 Ammonium Oxalate, saturated solution.
2.1 ASTM Standards:
5.7 Ferric Chloride Solution, 10 g dissolved in distilled
D3790 Test Method for Volatile Matter (Moisture) of
water and made up to 100 mL.
Leather by Oven Drying
5.8 Methyl Orange Indicator, 0.05 %.
2.2 Federal Standards:
Federal Test Standard No. 311, Method 6541 Magnesium
5.9 Sodium Ammonium Hydrogen Phosphate, saturated so-
Sulfate (Epsom Salt)
lution.
3. Significance and Use
6. Procedure
3.1 This test method distinguishes magnesium sulfate from
6.1 Unless otherwise specified in the material specification,
other water soluble non-tanning salts found in leather.
determine the moisture content of the composite sample from
which the test specimen is drawn, in accordance with Test
4. Apparatus
Method D3790. Determine the weight of the composite speci-
4.1 Platinum Crucible.
mens for moisture content at the same time and under the same
ambient conditions as the specimens weighed for chemical
4.2 Filtering Crucible.
tests.
6.2 Place the specimen in a tared porcelain crucible, 5 g
This test method is under the jurisdiction ofASTM Committee D31 on Leather
andisthedirectresponsibilityofSubcommitteeD31.06onChemicalAnalysis.This
weighed to the nearest 0.001 g, and record the value as W .
test method was developed from Federal Test Method Standard No. 311,
Place the weighed specimen in a cold muffle furnace or
Method 6541 in cooperation with the U.S. Army Natick Research Development &
precarbonize over a burner prior to placing in a hot furnace.
Engineering Center, Natick MA and the Defense Personnel Support Center
Directorate of Clothing and Textiles, Philadelphia PA.
Gradually raise the temperature of the furnace to 600 6 25°C
Current edition approved April 1, 2009. Published July 2009. Originally
and maintain at this temperature for 60 min. Remove the
approved in 1996. Last previous edition approved in 2003 as D6017 – 97 (2003).
crucible and contents, cool in a desiccator, and weigh. Replace
DOI: 10.1520/D6017-97R09.
in the furnace at 600 6 25°C for 30 min and repeat the cooling
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
and weighing procedure until a constant weight is obtained
Standards volume information, refer to the standard’s Document Summary page on
(60.01g). Ifit isdifficult toobtainaconstantweight, leachthe
the ASTM website.
3 residue with hot distilled water and filter through an ashless
Available from Superintendent of Documents, U.S. Government Printing
Office, Washington, DC 20402. filter paper. Place the filter paper in the crucible and ash. Add
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6017 − 97 (2009)
thefiltratetothecrucibleandevaporate.Thecrucibleshallthen 6.6 Filter the solution through a filtering crucible, transfer
be put back in the muffle furnace and heated, cooled, and the precipitate to the platinum crucible, and wash free from the
chlorides with ammonium hydroxide (1:9) solution. Moisten
weighed as above
...

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