This test method provides for the quantitative determination of inorganic chloride (chloride ion) in monoethylene glycol (MEG) by direct injection using ion chromatography with conductivity detection. The analysis time is less than 5 min with no sample preparation required. Conductivity detection is a universal detection mode and is linear over the range of the method. Acceptable levels of chloride in polyester-grade and low-conductivity-grade MEG vary with the manufacturer’s specifications but are normally in the low mg/kg range. Knowledge of the chloride content in polyester-grade and low-conductivity-grade MEG is required to establish whether the product meets specification requirements.

1.1 This test method covers the determination of inorganic chloride (chloride ion) in polyester-grade and low-conductivity-grade monoethylene glycol (MEG) in the range of 0.01 to 1.0 mg/kg by ion chromatography (IC).

1.2 Monoethylene glycol can be analyzed directly by this test method without any sample preparation.

1.3 The values given in SI units are to be considered as the standard. The values given in parentheses are for information only.

1.4 Review the current Material Safety Data Sheets (MSDS) for detailed information concerning toxicity, first-aid procedures and safety precautions.

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 and health practices and to determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.