ASTM D1613-02

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 1613 – 02
Standard Test Method for
Acidity in Volatile Solvents and Chemical Intermediates
1
Used in Paint, Varnish, Lacquer, and Related Products
This standard is issued under the fixed designation D 1613; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope * 3. Summary of Test Method
1.1 This test method covers the determination of total 3.1 The specimen is mixed with either an equal volume of
acidity as acetic acid, in concentrations below 0.05 %, in water or an equal volume of alcohol, and titrated with aqueous
organic compounds and hydrocarbon mixtures used in paint, sodium hydroxide solution to the phenolphthalein end point.
varnish, and lacquer solvents and diluents. It is known to be
4. Significance and Use
applicable to such mixtures as low molecular weight saturated
and unsaturated alcohols, ketones, ethers, esters, hydrocarbon 4.1 This test method is useful for determining low levels of
acidity, below 0.05 %, in organic compounds and hydrocarbon
diluents, naphtha, and other light distillate petroleum fractions.
1.2 For purposes of determining conformance of an ob- mixtures. The total acidity is calculated as acetic acid or
milligrams of sodium hydroxide per gram of sample.
served value or a calculated value using this test method to
relevant specifications, test result(s) shall be rounded off “to 4.2 Acidity may be present as a result of contamination,
decomposition during storage or distribution, or manufacture.
the nearest unit” in the last right-hand digit used in expressing
the specification limit, in accordance with the rounding-off This test method may be used in assessing compliance with a
specification.
method of Practice E 29.
1.3 For specific hazard information and guidance consult
5. Apparatus
supplier’s Material Safety Data Sheet.
5.1 Buret, 10-mL, graduated in 0.05-mL subdivisions.
1.4 This standard does not purport to address the safety
5.2 Erlenmeyer Flask, 250-mL capacity.
concerns, if any, associated with its use. It is the responsibility
of whoever uses this standard to consult and establish appro-
6. Purity of Reagents
priate safety and health practices and determine the applica-
6.1 Reagent grade chemicals shall be used in all tests.
bility of regulatory limitations prior to use.
Unless otherwise indicated, it is intended that all reagents shall
2. Referenced Documents
conform to the specifications of the Committee on Analytical
Reagents of the American Chemical Society, where such
2.1 ASTM Standards:
6
2
specifications are available. Other grades may be used pro-
D 770 Specification for Isopropyl Alcohol
3
vided it is first ascertained that the reagent is of sufficiently
D 1193 Specification for Reagent Water
high purity to permit its use without lessening the accuracy of
E 200 Practice for Preparation, Standardization, and Stor-
the determination.
age of Standard and Reagent Solutions for Chemical
4
6.2 Unless otherwise indicated, references to water shall be
Analysis
understood to mean reagent water conforming to Type IV of
E 29 Practice for Using Significant Digits in Test Data to
5
Specification D 1193.
Determine Conformance with Specifications
7. Reagents
7.1 Alcohols, refined, ethyl or isopropyl.
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
NOTE 1—Isopropyl alcohol (99 % grade) conforming to Specification
and Related Coatings, Materials, and Applications and is the direct responsibility of
D 770, or 190 proof ethyl alcohol conforming to formula No. 3A of the
Subcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.
Current edition approved July 10, 2002. Published September 2002. Originally
published as D 1613 – 64 T. Last previous edition D 1613 – 96 (1999).
6
Reagent Chemicals, American Chemical Society Specifications, American
2
Annual Book of ASTM Standards, Vol 06.04.
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
3
Annual Book of ASTM Standards, Vol 11.01.
listed by the American Chemical Society, see Analar Standards for Laboratory
4
Annual Book of ASTM Standards, Vol 15.05.
Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
5
Annual Book of ASTM Standards, Vol 14.02.
and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
MD.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- P
...