ASTM C471M-20a

Standard Test Methods for Chemical Analysis of Gypsum and Gypsum Products (Metric)

SCOPE
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster, gypsum wood-fibered plaster, and gypsum concrete.  
1.2 These test methods appear in the following order:    
Sections  
Preparation of Sample  
4  
Complete Procedure  
5 – 16  
Alternative Procedure for Analysis of Free Water in  
17  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Combined Water in  
18  
Gypsum Using a Moisture Balance  
Alternative Procedure for Analysis of Organic Material  
19  
and Carbon Dioxide in Gypsum by High Temperature  
Weight Loss  
Alternative Procedure for Analysis for Calcium Sulfate by  
20  
Ammonium Acetate Method  
Alternative Procedure for Analysis for Sodium Chloride by  
21  
the Coulometric Method  
Determination of Sand in Set Plaster  
22  
Wood-fiber Content in Wood-fiber Gypsum Plaster  
23  
Optional Procedure for Analysis for Sodium by the Atomic  
24  
Absorption Method  
Optional Procedure for Analysis for Sodium by Flame  
25  
Photometry  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
26  
Ggypsum Panel Products—General Provisions  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
27  
Gypsum Panel Products by Gas Chromatograph  
Equipped with a Mass Spectrometer (GS/MS)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
28  
Gypsum Panel Products by Gas Chromatograph  
Equipped with an Electron Capture Detector (GC/ECD)  
Determination of Orthorhombic Cyclooctasulfur (S8) in  
29  
Gypsum Panel Products by High-performance Liquid  
Chromatograph Equipped with and Ultraviolet Detector  
(HPLC/UV)  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in these test methods.  
1.4 These text of this test method references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.5 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.  
1.6 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: Historical
• Publication Date: 30-Nov-2020
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.01 - Specifications and Test Methods for Gypsum Products

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: C471M − 20a
Standard Test Methods for
Chemical Analysis of Gypsum and Gypsum Products
1
(Metric)
This standard is issued under the fixed designation C471M; 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 footnotes (excluding those in tables and figures) shall not be
considered as requirements of the standard.
1.1 These test methods cover the chemical analysis of
gypsum and gypsum panel products, including gypsum ready- 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
mixed plaster, gypsum wood-fibered plaster, and gypsum
concrete. responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
1.2 These test methods appear in the following order:
mine the applicability of regulatory limitations prior to use.
Sections
1.6 This international standard was developed in accor-
Preparation of Sample 4
Complete Procedure 5–16
dance with internationally recognized principles on standard-
Alternative Procedure for Analysis of Free Water in 17
ization established in the Decision on Principles for the
Gypsum Using a Moisture Balance
Development of International Standards, Guides and Recom-
Alternative Procedure for Analysis of Combined Water in 18
Gypsum Using a Moisture Balance
mendations issued by the World Trade Organization Technical
Alternative Procedure for Analysis of Organic Material 19
Barriers to Trade (TBT) Committee.
and Carbon Dioxide in Gypsum by High Temperature
Weight Loss
2. Referenced Documents
Alternative Procedure for Analysis for Calcium Sulfate by 20
Ammonium Acetate Method
2
2.1 ASTM Standards:
Alternative Procedure for Analysis for Sodium Chloride by 21
the Coulometric Method C11 Terminology Relating to Gypsum and Related Building
Determination of Sand in Set Plaster 22
Materials and Systems
Wood-fiber Content in Wood-fiber Gypsum Plaster 23
C22/C22M Specification for Gypsum
Optional Procedure for Analysis for Sodium by the Atomic 24
Absorption Method
C28/C28M Specification for Gypsum Plasters
Optional Procedure for Analysis for Sodium by Flame 25
C59 Specification for Gypsum Casting Plaster and Gypsum
Photometry
Molding Plaster
Determination of Orthorhombic Cyclooctasulfur (S )in 26
8
Ggypsum Panel Products—General Provisions
C61 Specification for Gypsum Keene’s Cement
Determination of Orthorhombic Cyclooctasulfur (S )in 27
8
C317/C317M Specification for Gypsum Concrete
Gypsum Panel Products by Gas Chromatograph
C778 Specification for Standard Sand
Equipped with a Mass Spectrometer (GS/MS)
Determination of Orthorhombic Cyclooctasulfur (S )in 28 C842 Specification forApplication of Interior Gypsum Plas-
8
Gypsum Panel Products by Gas Chromatograph
ter
Equipped with an Electron Capture Detector (GC/ECD)
D1193 Specification for Reagent Water
Determination of Orthorhombic Cyclooctasulfur (S )in 29
8
Gypsum Panel Products by High-performance Liquid
D1428 Test Method for Test for Sodium and Potassium In
Chromatograph Equipped with and Ultraviolet Detector
Water and Water-Formed Deposits by Flame Photometry
(HPLC ⁄UV)
3
(Withdrawn 1989)
1.3 The values stated in SI units are to be regarded as
D2013 Practice for Preparing Coal Samples for Analysis
standard. No other units of measurement are included in these
E11 Specification for Woven Wire Test Sieve Cloth and Test
test methods.
Sieves
1.4 These text of this test method references notes and
E177 Practice for Use of the Terms Precision and Bias in
footnotes that provide explanatory material. These notes and
ASTM Test Methods
1
These test methods are under the jurisdiction of ASTM Committee C11 on
2
Gypsum and Related Building Materials and Systems and are the direct responsi- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bility of Subcommittee C11.01 on Specifications and Test Methods for Gypsum contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Products. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2020. Published January 2021. Originally the ASTM website.
3
approved in 1961. Last previous edition approved in 2020 as C471M – 20. DOI: The last approved version of this historical standard is referenced on
10.1520/C0471M-20A. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C471M − 20a
E691 Practice for Conducting an Interlaboratory Study to 4.3.1 Gypsum Re
...

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: C471M − 20 C471M − 20a
Standard Test Methods for
Chemical Analysis of Gypsum and Gypsum Products
1
(Metric)
This standard is issued under the fixed designation C471M; 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
1.1 These test methods cover the chemical analysis of gypsum and gypsum panel products, including gypsum ready-mixed plaster,
gypsum wood-fibered plaster, and gypsum concrete.
1.2 These test methods appear in the following order:
Section(s)
Preparation of Sample 4
Complete Procedure 5 – 16
Alternative Procedure for Analysis of Free Water in Gypsum 17
Using a Moisture Balance
Alternative Procedure for Analysis of Combined Water in Gypsum 18
Using a Moisture Balance
Alternative Procedure for Analysis for Calcium Sulfate by 19
Ammonium Acetate Method
Alternative Procedure for Analysis for Sodium Chloride by the 20
Coulometric Method
Determination of Sand in Set Plaster 21
Wood-fiber Content in Wood-fiber Gypsum Plaster 22
Optional Procedure for Analysis for Sodium by the Atomic 23
Absorption Method
Optional Procedure for Analysis for Sodium by Flame Photometry 24
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 25
8
Panel Products—General Provisions
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 26
8
Panel Products by Gas Chromatograph Equipped with a Mass Spectrometer (GS/MS)
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 27
8
Panel Products by Gas Chromatograph
Equipped with an Electron Capture Detector (GC/ECD)
Determination of Orthorhombic Cyclooctasulfur (S ) in Gypsum 28
8
Panel Products by High-performance Liquid Chromatograph
Equipped with and Ultraviolet Detector (HPLC/UV)
Sections
Preparation of Sample 4
Complete Procedure 5 – 16
Alternative Procedure for Analysis of Free Water in 17
Gypsum Using a Moisture Balance
Alternative Procedure for Analysis of Combined Water in 18
Gypsum Using a Moisture Balance
Alternative Procedure for Analysis of Organic Material 19
and Carbon Dioxide in Gypsum by High Temperature
Weight Loss
1
These test methods are under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and are the direct responsibility of
Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products.
Current edition approved Oct. 1, 2020Dec. 1, 2020. Published October 2020January 2021. Originally approved in 1961. Last previous edition approved in 20172020 as
ε1
C471M – 17C471M – 20. . DOI: 10.1520/C0471M-20.10.1520/C0471M-20A.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C471M − 20a
Alternative Procedure for Analysis for Calcium Sulfate by 20
Ammonium Acetate Method
Alternative Procedure for Analysis for Sodium Chloride by 21
the Coulometric Method
Determination of Sand in Set Plaster 22
Wood-fiber Content in Wood-fiber Gypsum Plaster 23
Optional Procedure for Analysis for Sodium by the Atomic 24
Absorption Method
Optional Procedure for Analysis for Sodium by Flame 25
Photometry
Determination of Orthorhombic Cyclooctasulfur (S ) in 26
8
Ggypsum Panel Products—General Provisions
Determination of Orthorhombic Cyclooctasulfur (S ) in 27
8
Gypsum Panel Products by Gas Chromatograph
Equipped with a Mass Spectrometer (GS/MS)
Determination of Orthorhombic Cyclooctasulfur (S ) in 28
8
Gypsum Panel Products by Gas Chromatograph
Equipped with an Electron Capture Detector (GC/ECD)
Determination of Orthorhombic Cyclooctasulfur (S ) in 29
8
Gypsum Panel Products by High-performance Liquid
Chromatograph Equipped with and Ultraviolet Detector
(HPLC ⁄UV)
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.these
test methods.
1.4 TheThese text of this standard test method references notes and footnotes that provide explanatory material. These notes and
footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.5 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 o
...