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ASTM D3620-98

(Specification)

Standard Specification for Glacial Acetic Acid

Standard Specification for Glacial Acetic Acid

SCOPE
1.1 This specification covers glacial (99.8%) acetic acid for use in paint, varnish, lacquer, and related products.
1.2 For specific hazard information and guidance, see the supplier's Material Safety Data Sheet for materials listed in this specification.

General Information

Status
Historical
Publication Date
09-Dec-1998
ICS
87.060.30 - Solvents
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.35 - Solvents, Plasticizers, and Chemical Intermediates
Current Stage
Ref Project

Relations

Replaced By
ASTM D3620-04 - Standard Specification for Glacial Acetic Acid
Effective Date
01-Jun-2004
Referred By
ASTM D1726-11(2019) - Standard Test Methods for Hydrolyzable Chloride Content of Liquid Epoxy Resins
Effective Date
10-Dec-1998

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ASTM D3620-98 - Standard Specification for Glacial Acetic AcidASTM D3620-98 - Standard Specification for Glacial Acetic Acid
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ASTM D3620-98 - Standard Specification for Glacial Acetic Acid
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D 3620 – 98
Standard Specification for
Glacial Acetic Acid
This standard is issued under the fixed designation D 3620; 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 * 5. Test Methods
1.1 This specification covers glacial (99.8 %) acetic acid for 5.1 The properties enumerated in this specification shall be
use in paint, varnish, lacquer, and related products. determined in accordance with the following ASTM test
1.2 For specific hazard information and guidance, see the methods:
supplier’s Material Safety Data Sheet for materials listed in this 5.1.1 Purity—Test Methods E 302 estimates the purity from
specification. the freezing point.
5.1.2 Freezing Point—Test Methods E 302.
2. Referenced Documents
5.1.3 Color—Test Methods E 302.
2.1 ASTM Standards:
5.1.4 Water—Test Methods E 302.
D 2191 Test Method for Acetaldehyde Content of Vinyl 5.1.5 Iron—Test Method E 394, using a 20-mL specimen
Acetate
diluted to 80 mL with water.
D 3546 Test Method for Formic Acid in Glacial Acetic 5.1.5.1 Report—Report the iron content to the nearest 0.01
Acid
ppm (mg/kg). Duplicates that agree within 0.07 ppm absolute
E 180 Practice for Determining the Precision of ASTM are acceptable for averaging (95 % confidence level).
Methods for Analysis and Testing of Industrial Chemicals
5.1.5.2 Precision —The precision statements are based
E 300 Practice for Sampling Industrial Chemicals upon an interlaboratory study in which one operator in eight
E 302 Test Methods for Monobasic Organic Acids
different laboratories analyzed two samples of acetic acid in
E 394 Test Method for Iron in Trace Quantities Using the duplicate on two different days. The results were treated in
1,10-Phenanthroline Method
accordance with Practice E 180. The within-laboratory coeffi-
2.2 U.S. Federal Specification: cient of variation was 3.05 % with 14 df and the between-
PPP-C-2020 Chemicals, Liquid, Dry, and Paste: Packaging
laboratory coefficient of variation was 6.00 % with 6 df. Based
of
upon these coefficients of variation, the following criteria
should be used for judging the acceptability of results at the
3. Properties
95 % confidence level.
3.1 Glacial acetic acid shall conform to the following
5.1.5.3 Repeatability—Two results, each the mean of dupli-
requirements:
cates, obtained by the same operator on different days should
Acetic acid, weight %, min 99.8 be considered suspect if they differ by more than 9.2 %
Freezing point, °C, min 16.2
relative.
Color, Pt-Co scale, max 10
5.1.5.4 Reproducibility—Two results, each the mean of
Water content, weight %, max 0.16
Iron, ppm (mg/kg), max 0.40 duplicates, obtained by operators in different laboratories
Acetaldehyde, weight %, max 0.05
should be considered suspect if they differ by more than 20.6 %
Formic acid, weight %, max 0.09
relative.
4. Sampling 5.1.5.5 Bias—Bias cannot be determined for this specifica-
tion because there is no available material having an accepted
4.1 The material shall be sampled in accordance with
reference value.
Practice E 300.
5.1.6 Acetaldehyde—Test Method D 2191, using 100 mL of
sodium bisulfite and a 25-mL specimen.
This specification is under the jurisdiction of ASTM Committee D-1 on Paint
5.1.6.1 Report—Report the acetaldehyde content to the
and Related Coatings, Materials, and Applications and is the direct resp
...

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5.1 In order to calculate the volatile organic content (VOC) of paints containing EPA exempt solvents, it is necessary to know the acetone, methyl acetate, or parachlorobenzotrifluoride content. This gas chromatographic test method provides a simple and direct way for measuring these solvents. Each analyte is measured with respect to a unique internal standard. For acetone, the internal standard used is acetone-d6, for methyl acetate it is methyl acetate-d3, and for PCBTF it is metachlorobenzotrifluoride (MCBTF). These unique analyte/internal standard pairs behave very nearly as single solvents with respect to evaporation rate and adsorption rate onto a coated silica fiber (SPME) but are separable on a gas chromatograph (GC) capillary column. The only critical analytical technique required for successfully performing this test method is the ability of an analyst to weigh a paint sample and internal standard, corresponding to the analyte of interest, into a septum capped vial. After weighing, solvent evaporation has no effect on the final value of the determination. Since whole paint is not injected into the gas chromatograph, the analytical system is never compromised.
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1.1 This test method is for the determination of acetone, methyl acetate, or parachlorobenzotrifluoride (PCBTF), or combination of any of the three, in paints and coatings, by solid phase microextraction (SPME) headspace sampling, and subsequent injection into a gas chromatograph. It has been evaluated for cellulose nitrate, acrylic, and urethane solvent-borne systems. The established working range of this test method is: acetone, 28 to 90 %; methyl acetate, 12 to 22 %; parachlorobenzotrifluoride, 10 to 17 %. There is no reason to believe that it will not work outside these ranges. A minor modification of this test method would make it suitable for the analysis of the same analytes in water-borne coatings (see Note 1).
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