ASTM D7090-04(2018) PDF

Overview

ASTM D7090-04(2018): Standard Test Method for Purity of Isophorone by Capillary Gas Chromatography is an internationally recognized standard that details procedures for determining the purity of isophorone and identifying key impurities at low concentrations. Developed by ASTM International, this standard is essential in quality control and specification compliance across industries utilizing isophorone as a solvent or chemical intermediate. Capillary gas chromatography, equipped with a flame ionization detector, serves as the analytical technique in this method.

Key Topics

• Purity Determination: The standard outlines a method to accurately determine the mass percentage purity of isophorone.
• Impurity Quantification: It enables detection and quantification of impurities down to less than 0.5 mass %, including mesityl oxide (MSO), MSO-isomer, mesitylene, trimethyl cyclohexenone (TMCH), phorone, phorone-isomer, xylitone, and tetralone.
• Chromatographic Technique: Utilizes capillary gas chromatography with temperature programming and flame ionization detection for precise analysis.
• Water Exclusion: Water is not measured using this standard; alternative ASTM procedures such as ASTM D1364 are required for water content, with data used for normalization.
• Reporting & Rounding: Results are to be reported with clearly specified rounding practices, in accordance with ASTM Practice E29.
• Safety & Compliance: The standard advises establishing safe laboratory practices and considering all regulatory requirements before application.
• Calibration & Standardization: Includes comprehensive instructions on preparing calibration mixtures, using internal standards, and determining detector response.

Applications

ASTM D7090-04(2018) is widely adopted for:

• Quality Control in Manufacturing: Ensures the purity of isophorone used as a solvent or chemical intermediate meets industry specifications.
• Specification Compliance: Supports adherence to regulatory and quality requirements by accurately characterizing impurities.
• Research & Development: Facilitates the assessment and validation of isophorone samples in laboratory and pilot-scale environments.
• Procurement & Supply Chains: Assists raw material suppliers and buyers by providing a reliable method for verifying isophorone quality before acceptance or shipment.
• Environmental & Safety Assessments: Allows identification of potentially hazardous impurities, supporting downstream health, safety, and environmental compliance activities.

Related Standards

• ASTM D1364: Test Method for Water in Volatile Solvents (Karl Fischer Reagent Titration Method), used to determine water content in isophorone samples.
• ASTM E29: Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications, dictating rounding of results as applied in D7090.
• ASTM E300: Practice for Sampling Industrial Chemicals, referenced for sample collection procedures.
• International Standards Principles: This method aligns with the World Trade Organization (WTO) Technical Barriers to Trade (TBT) Committee guidelines for internationally recognized standards.

Keywords: ASTM D7090, isophorone purity, capillary gas chromatography, MSO, impurities, solvent analysis, flame ionization detector, chemical standardization, industrial solvents, quality control, ASTM standards.