Standard Specification for Sodium Chloride

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 E29.
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.

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09-Jun-2001
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ASTM D632-00 - Standard Specification for Sodium Chloride
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 632 – 00
Standard Specification for
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Sodium Chloride
This standard is issued under the fixed designation D 632; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Classification
1.1 This specification covers sodium chloride intended for 3.1 This specification covers sodium chloride obtained from
use as a deicer and for road construction or maintenance natural deposits (rock salt) or produced by man (evaporated,
purposes. solar, other) and recognizes two types and two grades as
1.2 The values stated as SI units are to be regarded as the follows:
standard. 3.1.1 Type I—Used primarily as a pavement deicer or in
1.3 For purposes of determining conformance to this speci- aggregate stabilization.
fication, values for chemical analysis shall be rounded to the 3.1.1.1 Grade 1—Standard grading (Note 1).
nearest 0.1 %, and values for grading shall be rounded to the 3.1.1.2 Grade 2—Special grading (Note 1).
nearest 1 %, in accordance with the rounding method in 3.1.2 Type II—Used in aggregate stabilization or for pur-
Practice E 29. poses other than deicing.
1.4 The text of this specification references notes and
NOTE 1—Grade 1 provides a particle grading for general application,
footnotes that provide explanatory material. These notes and
and has been found by latest research to be most effective for ice control
footnotes shall not be considered as requirements of the
and skid resistance under most conditions. Grade 2 is the grading typical
specification.
of salt produced in the Western United States and is available in states of
the Rocky Mountains Region and west, which may be preferred by
1.5 The following precautionary caveat pertains only to the
purchasers in that area.
test method in Annex A1, of this specification: This standard
does not purport to address all of the safety concerns, if any,
4. Chemical Requirements
associated with its use. It is the responsibility of the user of this
4.1 The sodium chloride shall conform to the following
standard to establish appropriate safety and health practices
requirement for chemical composition, except for the tolerance
and determine the applicability of regulatory limitations prior
stated in 6.1 and 6.2:
to use.
Sodium chloride (NaCl), min, % 95.0
2. Referenced Documents
5. Physical Requirements
2.1 ASTM Standards:
5.1 Grading:
C 136 Test Method for Sieve Analysis of Fine and Coarse
5.1.1 Type I—The grading of Type I sodium chloride, when
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Aggregates
tested by means of laboratory sieves conforming to Specifica-
C 670 Practice for Preparing Precision and Bias Statements
tion E 11, shall conform to the following requirements for
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for Test Methods for Construction Materials
3 particle size distribution, except for the tolerance stated in 6.1
D 1193 Specification for Reagent Water
and 6.1.1:
E 29 Practice for Using Significant Digits in Test Data to
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Mass % Passing
Determine Conformance with Specifications
Sieve Size Grade 1 Grade 2
4
E 287 Specification for Laboratory Glass Graduated Burets
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19.0 mm ( ⁄4 in.) . 100
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12.5 mm ( ⁄2 in.) 100 .
E 288 Specification for Laboratory Glass Volumetric
3
4 9.5 mm ( ⁄8 in.) 95 to 100 .
Flasks
4.75 mm (No. 4) 20 to 90 20 to 100
E 534 Test Method for Chemical Analysis of Sodium Chlo-
2.36 mm (No. 8) 10 to 60 10 to 60
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ride 600 μm (No. 30) 0 to 15 0 to 15
5.1.2 Type II—The grading of Type II sodium chloride shall
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conform to the grading requirements imposed or permitted by
This specification is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.31 on
the purchaser under conditions of the intended use.
Calcium and Sodium Chlorides and Other Deicing Materials.
Current edition approved Dec. 10, 2000. Published February 2001. Originally
6. Permissible Variations
published as D 632 – 41. Last previous edition D 632 – 99.
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6.1 In the case of sodium chloride sampled after delivery to
Annual Book of ASTM Standards, Vol 04.02.
3
Annual Book of ASTM Standards, Vol 11.01.
the purchaser, tolerances from the foregoing specified values
4
Annual Book of ASTM Standards, Vol 14.02.
shall be allowed as follows:
5
Annual Book of ASTM Standards, Vol 15.05.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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D 632
6.1.1 Grading—5 percentage points on the maximum value 9.1.2 Referee Testing—In case of controversy, determine the
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for the range for each sieve size, except the 12.5 mm ( ⁄2 in.) chemical composition of the sample, using the current versio
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