ASTM D632-12(2020)

Standard Specification for Sodium Chloride

SIGNIFICANCE AND USE
A1.2 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 E534, 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 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, 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: 31-Oct-2020
• 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.
Contact ASTM International (www.astm.org) for the latest information
Designation:D632 −12 (Reapproved 2020)
Standard Specification for
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 C670 Practice for Preparing Precision and Bias Statements
for Test Methods for Construction Materials
1.1 This specification covers sodium chloride intended for
E11 Specification for Woven Wire Test Sieve Cloth and Test
use as a deicer and for road construction or maintenance
Sieves
purposes.
E29 Practice for Using Significant Digits in Test Data to
1.2 The values stated as SI units are to be regarded as the
Determine Conformance with Specifications
standard.
E287 Specification for Laboratory Glass Graduated Burets
1.3 For purposes of determining conformance to this
E288 Specification for Laboratory Glass Volumetric Flasks
specification, values for chemical analysis shall be rounded to
E534 Test Methods for Chemical Analysis of Sodium Chlo-
the nearest 0.1 %, and values for grading shall be rounded to
ride
the nearest 1 %, in accordance with the rounding method in
Practice E29.
3. Classification
1.4 The text of this specification references notes and
3.1 This specification covers sodium chloride obtained from
footnotes that provide explanatory material. These notes and
natural deposits (rock salt) or produced by man (evaporated,
footnotes shall not be considered as requirements of the
solar, other) and recognizes two types and two grades as
specification.
follows:
1.5 The following precautionary caveat pertains only to the
3.1.1 Type I—Used primarily as a pavement deicer or in
test method in Annex A1 of this specification: This standard
aggregate stabilization.
does not purport to address all of the safety concerns, if any,
3.1.1.1 Grade 1—Standard grading (Note 1).
associatedwithitsuse.Itistheresponsibilityoftheuserofthis
3.1.1.2 Grade 2—Special grading (Note 1).
standard to establish appropriate safety, health, and environ-
3.1.2 Type II—Used in aggregate stabilization or for pur-
mental practices and determine the applicability of regulatory
poses other than deicing.
limitations prior to use.
1.6 This international standard was developed in accor-
NOTE 1—Grade 1 provides a particle grading for general application,
dance with internationally recognized principles on standard- and has been found by latest research to be most effective for ice control
and skid resistance under most conditions. Grade 2 is the grading typical
ization established in the Decision on Principles for the
of salt produced in the western United States and is available in states of
Development of International Standards, Guides and Recom-
the Rocky Mountains region and west, which may be preferred by
mendations issued by the World Trade Organization Technical
purchasers in that area.
Barriers to Trade (TBT) Committee.
4. Chemical Requirements
2. Referenced Documents
4.1 The sodium chloride shall conform to the following
2.1 ASTM Standards:
requirement for chemical composition, except for the tolerance
C136/C136M Test Method for Sieve Analysis of Fine and
stated in 6.1 and 6.2:
Coarse Aggregates
Sodium chloride (NaCl), min, % 95.0
This specification is under the jurisdiction of ASTM Committee D04 on Road
5. Physical Requirements
and Paving Materials and is the direct responsibility of Subcommittee D04.31 on
Calcium and Sodium Chlorides and Other Deicing Materials.
5.1 Grading:
Current edition approved Nov. 1, 2020. Published November 2020. Originally
5.1.1 Type I—The grading of Type I sodium chloride, when
approved in 1941. Last previous edition approved in 2012 as D632 – 12. DOI:
10.1520/D0632-12R20.
tested by means of laboratory sieves conforming to Specifica-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tion E11, shall conform to the following requirements for
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
particle size distribution, except for the tolerance stated in 6.1
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. and 6.1.1:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D632−12 (2020)
9. Test Methods
Mass % Passing
Sieve Size Grade 1 Grade 2
9.1 Chemical Analysis—Test for compliance with the re-
19.0mm( ⁄4 in.) . 100
12.5mm( ⁄2 in.) 100 . quirements for chemical composition in accordance with the
9.5mm( ⁄8 in.) 95 to 100 .
following methods:
4.75 mm (No. 4) 20 to 90 20 to 100
9.1.1 Routine Control—Use of the “Rapid Method” in
2.36 mm (No. 8) 10 to 60 10 to 60
600 µm (No. 30) 0 to 15 0 to 15
Annex A1 is permitted for routine control and approval.
9.1.2 RefereeTesting—In case of controversy, determine the
5.1.2 Type II—The grading of Type II sodium chloride shall
chemical composition of the sample using the current version
conform to the grading requirements imposed or permitted by
of Test Method E534.
the purchaser under conditions of the intended use.
9.2 Grading shall be determined by Test Method C136/
6. Permissible Variations
C136M.
6.1 In the case of sodium chloride sampled after delivery to
10. Inspection
the purchaser, tolerances from the foregoing specified values
10.1 The purchaser or his representative shall be provided
shall be allowed as follows:
free entry and necessary facilities at the production plant or
6.1.1 Grading—Five percentage points on the maximum
storage area if he elects to sample sodium chloride at the
value for the range for each sieve size, except the 12.5 mm
1 3 3 source.
( ⁄2 in.) and 9.5 mm ( ⁄8 in.) for Grade 1 and 19.0 mm ( ⁄4 in.)
for Grade 2.
11. Rejection and Rehearing
6.1.2 Chemical Composition—0.5 percentage point.
11.1 The sodium chloride shall be subject to rejection if it
failstoconformtoanyoftherequirementsofthisspecification.
7. Condition
11.2 In the case of failure to meet the requirements on the
7.1 The sodium chloride shall arrive at the purchaser’s
basis of an initial sample of a lot represented, two additional
delivery point in a free-flowing and usable condition.
samples shall be taken from the lot and tested. If both
additional samples meet the requirements, the lot shall be
8. Sampling
accepted.
8.1 Not less than three sample increments shall be selected
at random from the lot (Note 2). Each increment shall be 12. Packaging and Marking
obtained by scraping aside the top layer of material to a depth
12.1 The sodium chloride shall be delivered in bags or other
of at least 25 mm (1 in.) and taking a 500-g (approximately
containers acceptable to the purchaser, or in bulk lots. The
1-lb) quantity of sodium chloride to a depth of at least 150 mm
name of the producer and the net weight shall be legibly
(6 in.). Sampling shall be done by means of a sampling thief or
marked on each bag or container, or in the case of bulk lots, on
other method that will ensure a representative cross section of
the shipping or delivery report.
the material.The sample increments shall be thoroughly mixed
13. Keywords
to constitute a composite sample representative of the lot.
13.1 salt; snow and ice removal; sodium chloride; stabiliza-
NOTE 2—A lot may be an amount agreed upon between purchaser and
supplier at the time of purchase. tion; winter maintenance
ANNEX
(Mandatory Information)
A1. RAPID METHOD OF ANALYSIS FOR SODIUM CHLORIDE
A1.1 Scope A1.2 Significance and Use
A1.2.1 The procedure for chemical analysis in this annex
A1.1.1 This annex covers a rapid method for chemical
analysis of sodium chloride. determines the total amount of chlorides present in the sample
and expresses that value as sodium chlor
...

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: D632 − 12 D632 − 12 (Reapproved 2020)
Standard Specification for
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
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 safety, health, and healthenvironmental 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:
C136C136/C136M Test Method for Sieve Analysis of Fine and Coarse Aggregates
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E287 Specification for Laboratory Glass Graduated Burets
E288 Specification for Laboratory Glass Volumetric Flasks
E534 Test Methods for Chemical Analysis of Sodium Chloride
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 Calcium
and Sodium Chlorides and Other Deicing Materials.
Current edition approved April 1, 2012Nov. 1, 2020. Published April 2012November 2020. Originally approved in 1941. Last previous edition approved in 20012012 as
D632 – 01D632 – 12. which was withdrawn in January 2010 and reinstated in April 2012. DOI: 10.1520/D0632-12.DOI: 10.1520/D0632-12R20.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D632 − 12 (2020)
3. Classification
3.1 This specification covers sodium chloride obtained from natural deposits (rock salt) or produced by man (evaporated, solar,
other) and recognizes two types and two grades as follows:
3.1.1 Type I—Used primarily as a pavement deicer or in aggregate stabilization.
3.1.1.1 Grade 1—Standard grading (Note 1).
3.1.1.2 Grade 2—Special grading (Note 1).
3.1.2 Type II—Used in aggregate stabilization or for purposes other than deicing.
NOTE 1—Grade 1 provides a particle grading for general application, and has been found by latest research to be most effective for ice control and skid
resistance under most conditions. Grade 2 is the grading typical of salt produced in the Westernwestern United States and is available in states of the
Rocky Mountains Regionregion and west, which may be preferred by purchasers in that area.
4. Chemical Requirements
4.1 The sodium chloride shall conform to the following requirement for chemical composition, except for the tolerance stated in
6.1 and 6.2:
Sodium chloride (NaCl), min, % 95.0
5. Physical Requirements
5.1 Grading:
5.1.1 Type I—The grading of Type I sodium chloride, when tested by means of laboratory sieves conforming to Specification
E11E11,, shall conform to the following requirements for particle size distribution, except for the tolerance stated in 6.1 and 6.1.1:
Mass % Passing
Sieve Size Grade 1 Grade 2
19.0 mm ( ⁄4 in.) . 100
12.5 mm ( ⁄2 in.) 100 .
9.5 mm ( ⁄8 in.) 95 to 100 .
4.75 mm (No. 4) 20 to 90 20 to 100
2.36 mm (No. 8) 10 to 60 10 to 60
600 μm (No. 30) 0 to 15 0 to 15
600 μm (No. 30) 0 to 15 0 to 15
5.1.2 Type II—The grading of Type II sodium chloride shall conform to the grading requirements imposed or permitted by the
purchaser under conditions of the intended use.
6. Permissible Variations
6.1 In the case of sodium chloride sampled after delivery to the purchaser, tolerances from the foregoing specified values shall
be allowed as follows:
6.1.1 Grading—5Five percentage points on the maximum value for the range for each sieve size, except the 12.5 mm ( ⁄2 in.) in.)
3 3
and 9.5 mm ( ⁄8 in.) for Grade 1 and 19.0 mm ( ⁄4 in.) for Grade 2.
6.1.2 Chemical Composition—0.5 percentage point.
7. Condition
7.1 The sodium chloride shall arrive at the purchaser’s delivery point in a free-flowing and usable condition.
D632 − 12 (2020)
8. Sampling
8.1 Not less than three sample increments shall be selected at random from the lot (Note 2). Each increment shall be obtained by
scraping aside the top layer of material to a depth of at least 25 mm (1 in.) and taking a 500-g (approximately 1-lb) quantity of
sodium chloride to a depth of at least 150 mm (6 in.). Sampling shall be done by means of a sampling thief or other method that
will ensure a representative cross section of the material. The sample increments shall be thoroughly mixed to constitute a
composite sample representative of the lot.
NOTE 2—A lot may be an amount agreed upon between purchaser and supplier at the time of purchase.
9. Test Methods
9.1 Chemical Analysis—Test for compliance with the requirements for chemical composition in accordance with the following
methods:
9.1.1 Routine Control—Use of the “Rapid Method” in Annex A1 is permitted for routine control and approval.
9.1.2 Referee Testing—In case of controversy, determine the chemical composition of the sample,sample using the current version
of Test Method E534.
9.2 Grading shall be determined by Test Method C136C136/C136M.
10. Inspection
10.1 The purchaser or his representative shall be provided free entry and necessary facilities at the production plant or storage area
if he elects to sample sodium chloride at the source.
11. Rejection and Rehearing
11.1 The sodium chloride shall be subject to rejection if it fails to conform to any of the requirements of this specification.
11.2 In the case of failure to meet the requirements on the basis of an initial sample of a lot represented, two additional samples
shall be taken from the lot and tested. If both additional samples meet the requirements, the lot shall be accepted.
12. Packaging and Marking
12.1 The sodium chloride shall be delivered in bags or other containers acceptable to the purchaser, or in bulk lots. The name of
the producer and the net weight shall be legibly marked on each bag or container, or in the case of bulk lots, on the shipping or
delivery report.
13. Keywords
13.1 salt; snow and ice removal; sodium chloride; stabilization; winter maintenance
D632 − 12 (2020)
ANNEX
(Mandatory Information)
A1. RAPID METHOD OF ANALYSIS FOR SODIUM CHLORIDE
A1.1. Sc
...