ASTM D632-12

Standard Specification for Sodium Chloride

SIGNIFICANCE AND USE
A1.2.1 The procedure for chemical analysis in this annex determines the total amount of chlorides present in the sample and expresses that value as sodium chloride.
A1.2.2 This rapid method of analysis does not distinguish between sodium chloride and other evaporite chloride compounds with ice-melting capabilities. Typical rock salt and solar salt sometimes contains small amounts of CaCl2, MgCl2, and KCl, depending on the source of the material. When this rapid method is used on continuing shipments from a known source, it will provide a fast, essentially accurate determination of the sodium chloride content of the material furnished. Thus, the need for testing by the referee method, Test Method E 534, is reduced.
SCOPE
1.1 This specification covers sodium chloride intended for use as a deicer and for road construction or maintenance purposes.
1.2 The values stated as SI units are to be regarded as the standard.
1.3 For purposes of determining conformance to this specification, values for chemical analysis shall be rounded to the nearest 0.1 %, and values for grading shall be rounded to the nearest 1 %, in accordance with the rounding method in Practice E 29.
1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes shall not be considered as requirements of the specification.
1.5 The following precautionary caveat pertains only to the test method in Annex A1, of this specification: 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 and health practices and determine the applicability of regulatory limitations prior to use.  
A1.1.1 This annex covers a rapid method for chemical analysis of sodium chloride.

General Information

• Status: Historical
• Publication Date: 31-Mar-2012
• ICS: 71.060.50 - Salts
• ICS: 71.100.80 - Chemicals for purification of water
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.31 - Calcium and Sodium Chlorides and Other Deicing Materials

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D632 −12
Standard Specification for
1
Sodium Chloride
This standard is issued under the fixed designation D632; 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 E29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
1.1 This specification covers sodium chloride intended for
E287 Specification for Laboratory Glass Graduated Burets
use as a deicer and for road construction or maintenance
E288 Specification for Laboratory Glass Volumetric Flasks
purposes.
E534 Test Methods for Chemical Analysis of Sodium Chlo-
1.2 The values stated as SI units are to be regarded as the
ride
standard.
3. Classification
1.3 For purposes of determining conformance to this
specification, values for chemical analysis shall be rounded to 3.1 This specification covers sodium chloride obtained from
the nearest 0.1 %, and values for grading shall be rounded to natural deposits (rock salt) or produced by man (evaporated,
the nearest 1 %, in accordance with the rounding method in solar, other) and recognizes two types and two grades as
Practice E29. follows:
3.1.1 Type I—Used primarily as a pavement deicer or in
1.4 The text of this specification references notes and
aggregate stabilization.
footnotes that provide explanatory material. These notes and
3.1.1.1 Grade 1—Standard grading (Note 1).
footnotes shall not be considered as requirements of the
3.1.1.2 Grade 2—Special grading (Note 1).
specification.
3.1.2 Type II—Used in aggregate stabilization or for pur-
1.5 The following precautionary caveat pertains only to the
poses other than deicing.
test method in Annex A1, of this specification: This standard
NOTE 1—Grade 1 provides a particle grading for general application,
does not purport to address all of the safety concerns, if any,
and has been found by latest research to be most effective for ice control
associatedwithitsuse.Itistheresponsibilityoftheuserofthis
and skid resistance under most conditions. Grade 2 is the grading typical
standard to establish appropriate safety and health practices
of salt produced in the Western United States and is available in states of
and determine the applicability of regulatory limitations prior
the Rocky Mountains Region and west, which may be preferred by
to use. purchasers in that area.
1.6 This international standard was developed in accor-
4. Chemical Requirements
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 4.1 The sodium chloride shall conform to the following
requirement for chemical composition, except for the tolerance
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical stated in 6.1 and 6.2:
Barriers to Trade (TBT) Committee.
Sodium chloride (NaCl), min, % 95.0
5. Physical Requirements
2. Referenced Documents
5.1 Grading:
2.1 ASTM Standards:
5.1.1 Type I—The grading of Type I sodium chloride, when
C136 Test Method for Sieve Analysis of Fine and Coarse
tested by means of laboratory sieves conforming to Specifica-
Aggregates
tion E11, shall conform to the following requirements for
C670 Practice for Preparing Precision and Bias Statements
particle size distribution, except for the tolerance stated in 6.1
for Test Methods for Construction Materials
and 6.1.1:
Mass % Passing
Sieve Size Grade 1 Grade 2
3
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19.0mm( ⁄4 in.) . 100
This specification is under the jurisdiction of ASTM Committee D04 on Road
1
12.5mm( ⁄2 in.) 100 .
and Paving Materials and is the direct responsibility of Subcommittee D04.31 on
3
9.5mm( ⁄8 in.) 95 to 100 .
Calcium and Sodium Chlorides and Other Deicing Materials.
4.75 mm (No. 4) 20 to 90 20 to 100
Current edition approved April 1, 2012. Published April 2012. Originally
2.36 mm (No. 8) 10 to 60 10 to 60
approved in 1941. Last previous edition approved in 2001 as D632 – 01 which was
600 µm (No. 30) 0 to 15 0 to 15
withdrawn in January 2010 and reinstated in April 2012. DOI: 10.1520/D0632-12.
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5.1.2 Type II—The grading of Type II sodium chloride shall 9.1.1 Routine Control—Use of the “Rapid Method” in
conform to the grading requirements imposed or permitted by Annex A1 is permitted for routine control and approval.
the purchaser under conditions of the intended use.
9.1.2 RefereeTesting—In case of controversy, de
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