ASTM D2415-98(2012)

Standard Test Method for Ash in Coal Tar and Pitch

SIGNIFICANCE AND USE
4.1 This test method determines the amount of inorganic matter in the sample.
SCOPE
1.1 This test method covers the determination of the ash content of tar and pitch.  
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-Oct-2012
• ICS: 75.140 - Waxes, bituminous materials and other petroleum products
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.05 - Properties of Fuels, Petroleum Coke and Carbon Material

Relations

• Replaces: ASTM D2415-98(2008) - Standard Test Method for Ash in Coal Tar and Pitch
• Effective Date: 01-Nov-2012
• Referred By: ASTM D5040-90(2021) - Standard Test Methods for Ash Content of Adhesives
• Effective Date: 01-Nov-2012
• Referred By: ASTM D5710/D5710M-22 - Standard Specification for Trinidad Lake Modified Asphalt
• Effective Date: 01-Nov-2012
• Referred By: ASTM D2416-20 - Standard Test Method for Coking Value of Tar and Pitch (Modified Conradson)
• Effective Date: 01-Nov-2012
• Referred By: ASTM D4715-98(2022)e1 - Standard Test Method for Coking Value of Tar and Pitch (Alcan)
• Effective Date: 01-Nov-2012
• Referred By: ASTM D450/D450M-07(2018) - Standard Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and Waterproofing
• Effective Date: 01-Nov-2012

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D2415 − 98(Reapproved 2012)
Standard Test Method for
Ash in Coal Tar and Pitch
This standard is issued under the fixed designation D2415; 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 5.2 Dish or Crucible, porcelain, silica, or platinum, having
a capacity of 35 to 45 mLand a diameter at the top of 55 to 60
1.1 This test method covers the determination of the ash
mm.
content of tar and pitch.
5.3 Sieve, U.S. Standard 600-µm (No. 30), conforming to
1.2 The values stated in SI units are to be regarded as
Specification E11.
standard. No other units of measurement are included in this
standard.
6. Bulk Sampling
1.3 This standard does not purport to address all of the
6.1 Samples from shipments shall be taken in accordance
safety concerns, if any, associated with its use. It is the
with Practice D4296 and shall be free of foreign substances.
responsibility of the user of this standard to establish appro-
Thoroughly mix the sample immediately before removing a
priate safety and health practices and determine the applica-
representative portion for the determination or for dehydration.
bility of regulatory limitations prior to use.
7. Dehydration of Sample
2. Referenced Documents
7.1 Hard Pitch—If the solid bulk sample contains free
2.1 ASTM Standards:
water, air-dry a representative portion in a forced draft oven at
D370 Practice for Dehydration of Oil-Type Preservatives
50°C.
D4296 Practice for Sampling Pitch
E11 Specification for Woven Wire Test Sieve Cloth and Test
7.2 Soft Pitch—If the presence of water is indicated by
Sieves
surface foam on heating, maintain a representative portion of
the bulk sample at a temperature between 125 and 150°C in an
3. Summary of Test Method
open container until the surface is free of foam. Take care not
3.1 The sample is carefully volatilized and burned in a
to overheat, and remove heat source immediately when foam
muffle furnace or by other suitable means, after which the subsides.
carbonaceousresidueiscompletelyoxidizedandtheremaining
7.3 Tar—Dehydrate a representative portion of the bulk
ash stabilized at 900°C in the muffle furnace.
sample in accordance with Test Method D370, but stop the
distillation when the temperature reaches 170°C. Separate any
4. Significance and Use
oil from the water which has distilled over (if crystals are
4.1 This test method determines the amount of inorganic
present, warm sufficiently to ensure their solution), and thor-
matter in the sample.
oughly mix the oil with the residual tar in the still after the
latter has cooled to a moderate temperature.
5. Apparatus
5.1 Muffle Furnace—A muffle furnace with good air circu-
8. Preparation of Working Sample
lation and capable of having its temperature regulated at 900 6
8.1 Hard Pitch—If the pitch can be crushed at room
10°C.
temperature, prepare a 20-g working sample by suitable
crushing, mixing, and quartering of a representative portion of
the dry sample. The crushing can be done with a small jaw
This test method is under the jurisdiction of ASTM Committee D02 on
crusher and a mullite mortar and pestle. No particle in the
Petroleum Products and Lubricantsand is the direct responsibility of Subcommittee
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
representative sample shall be larger than 5 mm in any
Current edition approved Nov. 1, 2012. Published November 2012. Originally
dimension. Crush this sample so that all of it will pass the
approved in 1965. Last previous edition approved in 2008 as D2415–98(2008).
600-µm (No. 30) sieve.
DOI: 10.1520/D2415-98R12.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8.2 SoftPitch—If the pitch is too soft to grind and too sticky
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
to mix, heat a representative portion of the dry sample to the
Standards volume information, refer to the standard’s Document Summary p
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