ASTM D5347-95

Standard Test Method for Determination of the Ash Content of Fats and Oils

SCOPE
1.1 This test method covers the determination of the ash content of fats and oils used in the softening and stuffing of leather and in the manufacture of fatliquors and other softening and stuffing compounds. This test method was derived from Test Method D1951.
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.  See Section 5 for specific hazard statements.

General Information

• Status: Historical
• Publication Date: 31-Dec-1994
• Technical Committee: D31 - Leather
• Drafting Committee: D31.08 - Fats and Oils

Relations

• Replaced By: ASTM D5347-95(2001) - Standard Test Method for Determination of the Ash Content of Fats and Oils
• Effective Date: 01-Jan-1995
• Referred By: ASTM D7666-12(2019) - Standard Specification for Triglyceride Burner Fuel
• Effective Date: 01-Jan-1995

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5347 – 95
Standard Test Method for
Determination of the Ash Content of Fats and Oils
This standard is issued under the fixed designation D 5347; 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 (e) indicates an editorial change since the last revision or reapproval.
NOTE 3—Magnesium perchlorate and barium perchlorate are also
1. Scope
efficient desiccators and were previously listed in this section. However
1.1 This test method covers the determination of the ash
because of their explosive danger, and the availability of other safer
content of fats and oils used in the softening and stuffing of
materials, the recommendation for their use has been discontinued.
leather and in the manufacture of fatliquors and other softening
4.4 Oil Sample Bottle, 4-oz (120-mL).
and stuffing compounds. This test method was derived from
4.5 Triangle, Nichrome or clay.
Test Method D 1951.
1.2 The values stated in SI units are to be regarded as the
5. Hazards
standard.
5.1 Phosphorus Pentoxide is a strong oxidizer and reacts
1.3 This standard does not purport to address all of the
violently with water, reducing agents, and organic matter.
safety concerns, if any, associated with its use. It is the
Causes burns. Avoid contact with skin or eyes, or clothing, or
responsibility of the user of this standard to establish appro-
inhalation as dust. Refer to supplier’s Material Safety Data
priate safety and health practices and determine the applica-
Sheet.
bility of regulatory limitations prior to use. See Section 5 for
5.2 Sulfuric Acid is corrosive to skin, eyes and mucous
specific hazard statements.
membranes in the form of liquid, mist, or fumes. It causes
severe burns. Take care to prevent the contact of the acid with
2. Referenced Documents
eyes or skin or on clothing. In making dilute solutions, always
2.1 ASTM Standards:
add the acid to water with care. See supplier’s Material Safety
D 1951 Test Method for Ash in Drying Oils and Fatty
Data Sheet.
Acids
6. Procedure
3. Significance and Use
6.1 Ignite the crucible in the muffle furnace at 550 to 650°C.
3.1 This test method is intended to determine the ash
Cool slightly, place in a desiccator for 1 h, and weigh to 0.1
content of fats and oils used in the softening and stuffing of
mg.
leather, as well as those used in the manufacture of products for
6.2 Fill a 4-oz (120-mL) sample bottle with the sample and
such purpose. The ash content of fats and oils is measured for
weigh to 0.05 g. Pour about 20 g of the sample from the bottle
the purpose of quality assurance.
into the crucible supported on a triangle, using care so that no
oil runs down the outside of the crucible or bottle.
4. Apparatus
6.3 Heat gently by moving a flame on the bottom and sides
4.1 Crucible, porcelain or high-silica glass (Note 1), 50-mL
of the crucible until the oil ignites. Reduce the size of the flame
capacity.
until the heat is just sufficient to keep the sample burning.
NOTE 1—Platinum is not recommended. Boiled oils or oils contami-
When the first batch of oil has burned out, add about 20 g more
nated with driers c
...