This specification covers engine coolant grade 1,3-propanediol (PDO). Engine coolant grade 1,3-propanediol shall conform to the chemical and physical property requirements specified. Density or relative density, color of clear liquids, pH, trace chloride ion, ion chromatography analysis, digital density meter, ethylene glycols and propylene glycols analyses, and inductively couple plasma-atomic emission spectroscopy tests shall be performed.

1.1 This specification covers engine coolant grade 1,3-propanediol (PDO).

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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 determine the applicability of regulatory limitations prior to use.