ASTM D2415-15
(Test Method)Standard Test Method for Ash in Coal Tar and Pitch
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.
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Designation: D2415 − 15
Standard Test Method for
1
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 mL to 45 mL and a diameter at the top of
1.1 This test method covers the determination of the ash
55 mm to 60 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.
2. Referenced Documents 7. Dehydration of Sample
2
2.1 ASTM Standards: 7.1 Hard Pitch—If the solid bulk sample contains free
D850 Test Method for Distillation of Industrial Aromatic water, air-dry a representative portion in a forced draft oven at
Hydrocarbons and Related Materials 50 °C.
D4296 Practice for Sampling Pitch
7.2 Soft Pitch—If the presence of water is indicated by
E11 Specification for Woven Wire Test Sieve Cloth and Test
surface foam on heating, maintain a representative portion of
Sieves
thebulksampleatatemperaturebetween125 °Cand150 °Cin
an open container until the surface is free of foam. Take care
3. Summary of Test Method
not to overheat, and remove heat source immediately when
3.1 The sample is carefully volatilized and burned in a
foam subsides.
muffle furnace or by other suitable means, after which the
7.3 Tar—Dehydrate a representative portion of the bulk
carbonaceousresidueiscompletelyoxidizedandtheremaining
sample in accordance with Test Method D850, but stop the
ash stabilized at 900 °C in the muffle furnace.
distillation when the temperature reaches 170 °C. Separate any
4. Significance and Use oil from the water which has distilled over (if crystals are
present, warm sufficiently to ensure their solution), and thor-
4.1 This test method determines the amount of inorganic
oughly mix the oil with the residual tar in the still after the
matter in the sample.
latter has cooled to a moderate temperature.
5. Apparatus
8. Preparation of Working Sample
5.1 Muffle Furnace—A muffle furnace with good air circu-
8.1 Hard Pitch—If the pitch can be crushed at room
lation and capable of having its temperature regulated at
900 °C 6 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
1
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, Liquid Fuels, and Lubricantsand is the direct responsibility of
SubcommitteeD02.05onPropertiesofFuels,PetroleumCokeandCarbonMaterial.
representative sample shall be larger than 5 mm in any dimen-
Current edition approved Dec. 1, 2015. Published December 2015. Originally
sion. Crush this sample so that all of it will pass the 600 µm
approved in 1965. Last previous edition approved in 2012 as D2415 – 98 (2012).
(No. 30) sieve.
DOI: 10.1520/D2415-15.
2
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 service@astm.org. 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 page on
the ASTM website. lowest temperature that will permit passage through the
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2415 − 15
600 µm (No. 30) sieve, taking care to avoid excessive loss of dish or crucible to about 100 °C before placing it in a
volatile matter. Do not exceed 10 min for this melting period. desiccator. When at room temperature weigh to the nearest
Pass the heated sample through the 600 µm sieve to
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2415 − 98 (Reapproved 2012) D2415 − 15
Standard Test Method for
1
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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D370D850 Practice Test Method for Dehydration of Oil-Type PreservativesDistillation of Industrial Aromatic Hydrocarbons and
Related Materials
D4296 Practice for Sampling Pitch
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Summary of Test Method
3.1 The sample is carefully volatilized and burned in a muffle furnace or by other suitable means, after which the carbonaceous
residue is completely oxidized and the remaining ash stabilized at 900°C900 °C in the muffle furnace.
4. Significance and Use
4.1 This test method determines the amount of inorganic matter in the sample.
5. Apparatus
5.1 Muffle Furnace—A muffle furnace with good air circulation and capable of having its temperature regulated at 900900 °C
6 10°C.10 °C.
5.2 Dish or Crucible, porcelain, silica, or platinum, having a capacity of 3535 mL to 45 mL 45 mL and a diameter at the top
of 5555 mm to 60 mm.60 mm.
5.3 Sieve, U.S. Standard 600-μmStandard 600 μm (No. 30), conforming to Specification E11.
6. Bulk Sampling
6.1 Samples from shipments shall be taken in accordance with Practice D4296 and shall be free of foreign substances.
Thoroughly mix the sample immediately before removing a representative portion for the determination or for dehydration.
7. Dehydration of Sample
7.1 Hard Pitch—If the solid bulk sample contains free water, air-dry a representative portion in a forced draft oven at
50°C.50 °C.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricantsand is the direct responsibility of
Subcommittee D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
Current edition approved Nov. 1, 2012Dec. 1, 2015. Published November 2012December 2015. Originally approved in 1965. Last previous edition approved in 20082012
as D2415–98(2008).D2415 – 98 (2012). DOI: 10.1520/D2415-98R12.10.1520/D2415-15.
2
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2415 − 15
7.2 Soft Pitch—If the presence of water is indicated by surface foam on heating, maintain a representative portion of the bulk
sample at a temperature between 125125 °C and 150°C150 °C in an open container until the surface is free of foam. Take care not
to overheat, and remove heat source immediately when foam subsides.
7.3 Tar—Dehydrate a representative portion of the bulk sample in accordance with Test Method D370D850, but stop the
distillation when the temperature reaches 170°C.170 °C. Separate any oil from the water which has distilled over (if crystals are
present, warm sufficiently to ensure their solution), and thoroughly mix the oil with the residual tar in the still after the latter has
cooled to a moderate temperature.
8. Preparation of Working Sample
8.1 Hard Pitch—If the pitch can be crushed at room temperature, prepare a 20-g20 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 crusher and a
mullite mortar and pestle. No particle in the representative sample shall be larger than 5 mm 5 mm in any dimension. Crush this
sam
...
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