Used as a reference standard in environmental testing laboratories to calibrate analytical instruments for the detection and quantification of 1,2,3-trichloropropane in water, soil, and air samples. Commonly applied in gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) analyses to ensure accurate measurement of this contaminant, especially in regulatory compliance testing for drinking water and hazardous waste sites. Also used in research studies assessing the fate and transport of chlorinated hydrocarbons in the environment.