ASTM E1229-21

Standard Specification for Calcium Hypochlorite

ABSTRACT
This specification covers technical-grade calcium hypochlorite in granular form. Sampled specimens shall be tested and conform accordingly to chemical and physical requirements such as available chlorides, moisture content, and particle sizes through a U.S. 14 and U.S. 100 mesh.
SCOPE
1.1 This specification covers technical-grade calcium hypochlorite in granular form.  
1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this specification, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.  
1.3 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, handling and safety precautions.  
1.5 The following safety hazards caveat pertains only to the test methods listed in Sections 3 – 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: Published
• Publication Date: 31-May-2021
• ICS: 71.060.50 - Salts
• Technical Committee: D16 - Aromatic, Industrial, Specialty and Related Chemicals
• Drafting Committee: D16.13 - Chlorine

Relations

• Refers: ASTM D2022-89(2016) - Standard Test Methods of Sampling and Chemical Analysis of Chlorine-Containing Bleaches
• Effective Date: 01-Jul-2016
• Refers: ASTM D1921-12 - Standard Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
• Effective Date: 01-Aug-2012
• Refers: ASTM E29-08 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Oct-2008
• Refers: ASTM D2022-89(2008) - Standard Test Methods of Sampling and Chemical Analysis of Chlorine-Containing Bleaches
• Effective Date: 01-Jul-2008
• Refers: ASTM E29-06b - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Nov-2006
• Refers: ASTM E29-06a - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Sep-2006
• Refers: ASTM E29-06 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-May-2006
• Refers: ASTM D1921-06e1 - Standard Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
• Effective Date: 01-Apr-2006
• Refers: ASTM D1921-06 - Standard Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
• Effective Date: 01-Apr-2006
• Refers: ASTM E29-04 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Dec-2004
• Refers: ASTM E29-02e1 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 10-May-2002
• Refers: ASTM D1921-96 - Standard Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
• Effective Date: 10-Aug-2001
• Refers: ASTM D1921-01 - Standard Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
• Effective Date: 10-Aug-2001
• Refers: ASTM E29-93a(1999) - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 10-May-1999
• Refers: ASTM D2022-89(1995)e1 - Standard Test Methods of Sampling and Chemical Analysis of Chlorine-Containing Bleaches
• Effective Date: 01-Jan-1995

Overview

ASTM E1229-21: Standard Specification for Calcium Hypochlorite establishes the requirements for technical-grade calcium hypochlorite in granular form. This international standard is developed by ASTM International and is recognized for ensuring the quality and consistency of calcium hypochlorite, a widely used industrial and municipal chemical. The document details requirements for chemical composition, physical properties, sampling, testing, packaging, and labeling, supporting safety and regulatory compliance in both commercial and defense sectors.

Key Topics

• Material Scope: Covers technical-grade calcium hypochlorite in granular form, ensuring suitability for diverse applications.
• Chemical Requirements: Specifies minimum available chloride content by mass and allowable moisture content to optimize stability and effectiveness.
• Physical Requirements: Defines particle size distribution using U.S. 14 and U.S. 100 mesh standards to ensure product uniformity.
• Testing Methods: References established ASTM test methods, including D1921 for sieve analysis and D2022 for chemical analysis.
• Packaging and Labeling: Outlines guidelines in line with DOT Hazardous Materials Regulations and federal specifications for safe handling and transport.
• Safety Considerations: Mandates review of current Safety Data Sheets (SDS) for handling, toxicity, first aid, and environmental precautions.

Applications

Technical-grade granular calcium hypochlorite is a vital chemical for:

• Water Treatment: Used as a disinfectant for municipal and industrial water supplies, swimming pools, and wastewater, ensuring pathogen control and safe water quality.
• Sanitization and Disinfection: Popular in food processing, agriculture, and public health sectors for its effectiveness in eliminating bacteria and viruses on surfaces and equipment.
• Industrial Processes: Employed in bleaching, oxidation, and other chemical manufacturing processes requiring a reliable source of chlorine.
• Emergency and Military Use: Specified packaging standards support use in defense and emergency response settings.

The standard ensures that product supplied for these critical uses meets robust quality benchmarks for purity, stability, and performance.

Related Standards

For comprehensive compliance and integration, ASTM E1229-21 references and relates to several other key standards:

• ASTM D1921 - Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
• ASTM D2022 - Test Methods of Sampling and Chemical Analysis of Chlorine-Containing Bleaches
• ASTM E29 - Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• CFR 49, Parts 100-199 - U.S. Department of Transportation Hazardous Materials Regulations
• Federal Specification PPP-C-2020A - Guidelines for chemical packaging in liquid, dry, and paste form

These references ensure precise testing, robust sampling, and regulatory conformity across jurisdictions and applications.

---

Keywords: ASTM E1229-21, calcium hypochlorite specification, granular form, available chloride, moisture content, particle size, water treatment chemical, industrial disinfection, US mesh standards, hazardous materials packaging, ASTM standards, technical-grade calcium hypochlorite

Standards Content (Sample)

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: E1229 −21
Standard Specification for
Calcium Hypochlorite
This standard is issued under the fixed designation E1229; 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* D2022 Test Methods of Sampling and ChemicalAnalysis of
Chlorine-Containing Bleaches
1.1 This specification covers technical-grade calcium hy-
E29 Practice for Using Significant Digits in Test Data to
pochlorite in granular form.
Determine Conformance with Specifications
1.2 The following applies to all specified limits in this
2.2 Other Documents:
specification: for purposes of determining conformance with
CFR 49, Parts 100 to 199, Department of Transportation,
this specification, an observed value or a calculated value shall
Rules and Regulations for the Transportation of Hazard-
be rounded off “to the nearest unit” in the last right-hand digit
ous Materials
used in expressing the specification limit, in accordance with
FederalSpecificationPPP-C-2020A Chemicals,Liquid,Dry,
the rounding-off method of Practice E29.
and Paste, Packaging of (superseding PPP-C-2020)
1.3 Units—The values stated in SI units are to be regarded
3. Requirements
as standard. The values given in parentheses are for informa-
3.1 Technical-grade granular calcium hypochlorite shall
tion only.
conform to the following chemical and physical requirements:
1.4 Review the current Safety Data Sheets (SDS) for de-
Property Specification ASTM Test
tailed information concerning toxicity, first aid procedures,
Method
handling and safety precautions.
Available Chloride, mass % 65.0 min D2022
1.5 The following safety hazards caveat pertains only to the
(m/m)
test methods listed in Sections3–5. This standard does not
Moisture, mass % 5.5 to 10.0 D2022
(m/m)
purport to address all of the safety concerns, if any, associated
Particle Size,
with its use. It is the responsibility of the user of this standard
through U.S. 14 mesh, min % 75.0 D1921
to establish appropriate safety, health, and environmental
through U.S. 100 mesh, max % 10.0 D1921
(Method B)
practices and determine the applicability of regulatory limita-
tions prior to use.
4. Sampling
1.6 This international standard was developed in accor-
4.1 Sample technical-grade granular calcium hypochlorite
dance with internationally recognized principles on standard-
in accordance with the appropriate section of Test Methods
ization established in the Decision on Principles for the
D2022.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5. Test Methods
Barriers to Trade (TBT) Committee.
5.1 Test each composite sample for the chemical and
physical requirements listed in Section 3.
2. Referenced Documents
6. Packaging and Labeling
2.1 ASTM Standards:
D1921 Test Methods for Particle Size (Sieve Analysis) of
6.1 Industrial or commercial quantities shall be packaged
Plastic Materials
and labeled in accordance with DOT Hazardous Materials
Regulations CFR 49, Parts 1
...

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: E1229 − 16 E1229 − 21
Standard Specification for
Calcium Hypochlorite
This standard is issued under the fixed designation E1229; 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 This specification covers technical-grade calcium hypochlorite in granular form.
1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this
specification, an observed value or a calculated value shall be rounded off “to the nearest unit” in the last right-hand digit used
in expressing the specification limit, in accordance with the rounding-off method of Practice E29.
1.3 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.4 Review the current Safety Data Sheets (SDS) for detailed information concerning toxicity, first aid procedures, handling and
safety precautions.
1.5 The following safety hazards caveat pertains only to the test methods listed in Sections 3 – 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.
2. Referenced Documents
2.1 ASTM Standards:
D1921 Test Methods for Particle Size (Sieve Analysis) of Plastic Materials
D2022 Test Methods of Sampling and Chemical Analysis of Chlorine-Containing Bleaches
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
2.2 Other Documents:
CFR 49, Parts 100 to 199, Department of Transportation, Rules and Regulations for the Transportation of Hazardous Materials
Federal Specification PPP-C-2020A Chemicals, Liquid, Dry, and Paste, Packaging of (superseding PPP-C-2020)
This specification is under the jurisdiction of ASTM Committee D16 on Aromatic, Industrial, Specialty and Related Chemicals and is the direct responsibility of
Subcommittee D16.13 on Chlorine.
Current edition approved Nov. 1, 2016June 1, 2021. Published November 2016July 2021. Originally approved in 1989. Last previous edition approved in 20082016 as
E1229E1229 – 16. – 08. DOI: 10.1520/E1229-16.10.1520/E1229-21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
The Code of Federal Regulations may be obtained from the U.S. Government Printing Office, 732 N. Capitol St., NW, Washington, DC 20401, http://www.gpoaccess.gov/
CFR/index.html.
Single copies of Federal Specifications required for bidding purposes
...