ASTM D3545-22 PDF

Full title and description

Standard Test Method for Alcohol Content and Purity of Acetate Esters by Gas Chromatography — ASTM D3545-22 specifies a gas‑chromatographic procedure for determining the ester content and the corresponding alcohol content (impurities/purity) of common acetate esters (for example ethyl, n‑propyl, isopropyl, n‑butyl, isobutyl, and 2‑ethoxyethyl acetates).

Abstract

ASTM D3545-22 is a laboratory test method that uses gas chromatography to quantify ester and alcohol components in acetate esters and to detect organic impurities. The method excludes direct determination of water and (in some cases) acetic acid — these must be measured by other ASTM procedures and used to normalize chromatographic results. The standard defines sample preparation, chromatographic conditions, calculation and rounding rules, and applicability to a set of common acetate esters.

General information

• Status: Active
• Publication date: January 1, 2022 (current edition D3545‑22, approved Jan 1, 2022)
• Publisher: ASTM International
• ICS / categories: 87.060.30 — Solvents (paints, coatings and solvent testing)
• Edition / version: D3545‑22
• Number of pages: 11

Scope

This test method covers determination by gas chromatography of the ester content and corresponding alcohol content of acetate esters. It has been applied to ethyl, n‑propyl, isopropyl, n‑butyl, isobutyl and 2‑ethoxyethyl acetates. The method does not determine water (and in some cases acetic acid); those constituents must be measured separately and results used to normalize chromatographic values. Results shall be rounded per Practice E29; SI units are primary.

Key topics and requirements

• Gas chromatography procedure for quantifying ester and alcohol peaks in acetate esters.
• Applicable materials: ethyl, n‑propyl, isopropyl, n‑butyl, isobutyl, 2‑ethoxyethyl acetate (illustrative list).
• Sample preparation, chromatographic conditions, detector response handling and calculation of percent composition.
• Requirement to measure water (e.g., by Karl Fischer, Test Method D1364) and acidity (e.g., Test Method D1613) separately when needed and normalize results.
• Precision/reproducibility informed by interlaboratory study (research report RR:D01‑1004) and rounding rules per Practice E29.
• Safety note: follow supplier MSDS and appropriate laboratory safety practices; method does not address all safety concerns.

Typical use and users

Used by quality control and analytical laboratories in solvent and chemical manufacturing, paint and coatings producers, suppliers of acetate esters, contract testing labs, and regulatory or certification bodies that require quantitative purity and impurity profiles for acetate esters. Typical applications include incoming raw‑material inspection, batch release testing, formulation troubleshooting, and impurity identification.

Related standards

Commonly referenced standards and practices used alongside D3545 include: ASTM D1364 (Water in Volatile Solvents — Karl Fischer), ASTM D1613 (Acidity in Volatile Solvents), Practice E29 (Rounding and significant digits), and other solvent/solvent‑test methods in Committee D01 (for example specifications for n‑Butyl Acetate and related solvent test methods).

Keywords

acetate esters, alcohol content, purity, gas chromatography, solvents, D3545, ASTM D01, analytical method, Karl Fischer normalization, impurity profiling

FAQ

Q: What is this standard?

A: ASTM D3545‑22 is a test method that defines a gas‑chromatographic procedure to determine the ester content and corresponding alcohol content (purity/impurities) of common acetate esters.

Q: What does it cover?

A: It covers sample preparation, chromatographic measurement, calculation of percent ester and alcohol components, rounding rules, limitations (water and some acetic acid determinations excluded), and typical applicability to specific acetate esters such as ethyl, n‑propyl, isopropyl, n‑butyl, isobutyl and 2‑ethoxyethyl acetate.

Q: Who typically uses it?

A: Analytical and QC laboratories in chemical and solvent manufacturing, coatings and paint companies, contract testing labs, and any organization that needs to verify composition and purity of acetate ester materials.

Q: Is it current or superseded?

A: The current approved edition is D3545‑22 (approved Jan 1, 2022). Earlier editions (for example the 2006/2012 versions) were superseded or withdrawn prior to reinstatement in the 2022 edition; users should confirm they are using D3545‑22 for current requirements.

Q: Is it part of a series?

A: It is issued under ASTM Committee D01 (Paints and Related Coatings, Materials, and Applications), Subcommittee D01.35 (Solvents, Plasticizers, and Chemical Intermediates), and is commonly used together with other D01 test methods for solvent analysis.

Q: What are the key keywords?

A: Acetate esters, alcohol content, purity, gas chromatography, solvents, impurity analysis, D3545.