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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.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
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 .
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 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
Other DocumentsCFR 49,
ICS Number Code 71.060.50 (Salts)
UNSPSC Code 12352302(Inorganic metal salts)
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ASTM E1229-21, Standard Specification for Calcium Hypochlorite, ASTM International, West Conshohocken, PA, 2021, www.astm.orgBack to Top