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ASTM C1069-09(2022)

(Test Method)

Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption

Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption

SIGNIFICANCE AND USE
4.1 Both sellers and purchasers of alumina and quartz will find the test method useful to determine the specific surface area and indirectly as a measure of the particle size for material specifications, manufacturing control, and research and development.
SCOPE
1.1 This test method covers the determination of the specific surface area of aluminas and silicas used in the manufacture of ceramics. The test method is a general one, permitting the use of any modern commercial nitrogen adsorption apparatus but strictly defining the outgassing procedure. Calculations are based on the Brunauer-Emmett-Teller (BET) equation.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

Status
Published
Publication Date
30-Apr-2022
ICS
81.060.10 - Raw materials
Technical Committee
C21 - Ceramic Whitewares and Related Products
Drafting Committee
C21.04 - Raw Materials
Current Stage
Ref Project

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ASTM C1069-09(2022) - Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen AdsorptionASTM C1069-09(2022) - Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
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ASTM C1069-09(2022) - Standard Test Method for Specific Surface Area of Alumina or Quartz by Nitrogen Adsorption
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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:C1069 −09 (Reapproved 2022)
Standard Test Method for
Specific Surface Area of Alumina or Quartz by Nitrogen
Adsorption
This standard is issued under the fixed designation C1069; 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 manufacturer of the instrument used. The sample is accurately
weighed after analysis.
1.1 Thistestmethodcoversthedeterminationofthespecific
surface area of aluminas and silicas used in the manufacture of 3.2 Calculations are based on the BET equations, adapted
ceramics. The test method is a general one, permitting the use where necessary for the equipment being used. The cross-
of any modern commercial nitrogen adsorption apparatus but sectional area of the nitrogen molecule is taken as 0.162 nm .
strictly defining the outgassing procedure. Calculations are
4. Significance and Use
based on the Brunauer-Emmett-Teller (BET) equation.
4.1 Both sellers and purchasers of alumina and quartz will
1.2 The values stated in SI units are to be regarded as
find the test method useful to determine the specific surface
standard. No other units of measurement are included in this
area and indirectly as a measure of the particle size for material
standard.
specifications, manufacturing control, and research and devel-
1.3 This standard does not purport to address all of the
opment.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety, health, and environmental practices and deter-
5.1 Specific Surface Area Analyzer, recently (after 1970)
mine the applicability of regulatory limitations prior to use.
manufactured commercial equipment employing low-
1.4 This international standard was developed in accor-
temperature (77 K) nitrogen adsorption. This test method may
dance with internationally recognized principles on standard-
be dynamic or static.
ization established in the Decision on Principles for the
5.2 Degassing Equipment, suitable to the instrument used.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5.3 Analytical Balance, having a sensitivity of 1.0 mg.
Barriers to Trade (TBT) Committee.
6. Reagents and Materials
2. Referenced Documents
6.1 Liquid Nitrogen.
2.1 ASTM Standards:
6.2 Cylinder of compressed nitrogen gas, high purity as
E173 Practice for Conducting Interlaboratory Studies of
specified by manufacturer, with pressure regulator.
Methods for Chemical Analysis of Metals (Withdrawn
1998)
6.3 Cylinder of compressed helium gas, high purity as
specified by manufacturer, with pressure regulator, for static
3. Summary
instruments or for dynamic instruments having gas mixing
3.1 An appropriate size sample is degassed for1hat423K
ability and employing the multipoint procedure or,
before proceeding with the analysis as prescribed by the
6.4 Cylinder of compressed, approximately 0.30 mol
fraction, nitrogen in helium with pressure regulator, for other
ThistestmethodisunderthejurisdictionofASTMCommitteeC21onCeramic
dynamic instruments employing the single point procedure.
Whitewares and Related Products and is the direct responsibility of Subcommittee
C21.04 on Raw Materials.
7. Procedure
Current edition approved May 1, 2022. Published May 2022. Originally
approved in 1986. Last previous edition approved in 2014 as C1069 – 09 (2014).
7.1 Sample Preparation—Blend the gross sample very well.
DOI: 10.1520/C1069-09R22.
For non-free-flowing materials mechanical agitation is neces-
For referenced ASTM standards, visit the ASTM website, www.astm
...

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5.1 Manufacturers and users of alumina powders will find this test method useful to determine the particle size distribution of these materials for product specification, quality control, and research and development testing.
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1.1 This test method covers the determination of the particle size distribution of alumina in the range from 0.1 to 20 μm having a median particle diameter from 0.5 to 5.0 μm.  
1.2 The procedure described in this test method may be successfully applied to other ceramic powders in this general size range. It is the responsibility of the user to determine the applicability of this test method to other material.  
1.3 The values stated in SI units are to regarded as the standard. The values given in parentheses are for information only.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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