ASTM D1762-84(2021)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D1762 − 84 (Reapproved 2021)
Standard Test Method for
Chemical Analysis of Wood Charcoal
This standard is issued under the fixed designation D1762; 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 under specified conditions. Ash is determined as the residue
after burning to constant weight at 750°C.
1.1 This test method covers the determination of moisture,
volatile matter, and ash in charcoal made from wood. The test
4. Significance and Use
method is applicable to lumps and briquets and is designed for
the evaluation of charcoal quality. The test method employs 4.1 Low quality wood and wood residues are used for wood
apparatus that is found in most laboratories and is adapted to
charcoal. This test method is used for evaluating the charcoal
routine analyses of a large number of samples. to assess the methods of production and assist in developing
new methods.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Apparatus
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
5.1 Mill, for grinding samples.
mine the applicability of regulatory limitations prior to use.
5.2 Oven, with automatic temperature control at 105 6 1°C.
1.3 This international standard was developed in accor-
5.3 Muffle Furnace, to control temperatures at 750 6 5°C
dance with internationally recognized principles on standard-
and 950 6 5°C.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5.4 AnalyticalBalance, with a capacity of at least 100 g and
mendations issued by the World Trade Organization Technical
a sensitivity of 0.1 mg.
Barriers to Trade (TBT) Committee.
5.5 Containers, airtight, such as screw-top bottles for stor-
age of ground samples.
2. Referenced Documents
5.6 Sieves, as specified in Method D410.
2.1 ASTM Standards:
D346 Practice for Collection and Preparation of Coke 5.7 Crucibles, porcelain, 41 by 37 mm with porcelain lids.
Samples for Laboratory Analysis
5.8 Desiccator, containing calcium chloride as drying agent.
D410 Method of SieveAnalysis of Coal (Withdrawn 1988)
D3176 Practice for Ultimate Analysis of Coal and Coke
6. Sample
D3180 Practice for Calculating Coal and Coke Analyses
6.1 Sample Selection—The sample shall be selected so as to
from As-Determined to Different Bases
be representative of all of the material contained in a lot.
Sample selection shall be carried out in accordance with
3. Summary of Method
Practices D346, D3176, and D3180.
3.1 The sample is ground in a specified manner and the
6.2 Sample Preparation—Samples will normally be air-dry
moisture determined as loss in weight in a drying oven at
charcoallumpsorbriquets.Rainsoakedorwetsamplesshallbe
105°C.Volatile matter is determined as loss in weight at 950°C
spread out to air-dry before carrying out the analysis. For
purchasespecifications,themoisturecontentofthecharcoal,as
This test method is under the jurisdiction of ASTM Committee D07 on Wood
received, shall be determined on samples ground to pass a No.
and is the direct responsibility of Subcommittee D07.01 on Fundamental Test
20 (850-µm) sieve, since excessive grinding will result in loss
Methods and Properties.
of moisture due to the generation of heat. For laboratory
Current edition approved April 1, 2021. Published April 2021. Originally
approved in 1960. Last previous edition approved in 2013 as D1762 – 84 (2013).
DOI: 10.1520/D1762-84R21.
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 A Wiley Mill, size No. 2, with a 1-mm screen, or an equivalent mill has been
Standards volume information, refer to the standard’s Document Summary page on found satisfactory for this purpose. If you are aware of alternative suppliers, please
the ASTM website. provide this information toASTM International Headquarters. Your comments will
3 1
The last approved version of this historical standard is referenced on receive careful consideration at a meeting of the responsible technical committee,
www.astm.org. which you may attend.
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D1762 − 84 (2021)
NOTE 3—Individual nichrome wire baskets to hold the crucibles are
evaluation, moisture, ash, and volatile matter shall be deter-
convenient.
mined on a sample ground as follo
...