Used as a reference standard in analytical laboratories for the accurate identification and quantification of chloral hydrate in environmental, pharmaceutical, and forensic samples. Commonly employed in gas chromatography (GC) and liquid chromatography (LC) methods to calibrate instruments and validate test procedures. Ensures reliability in monitoring chloral hydrate levels in drinking water, wastewater, and biological specimens, especially in regulatory and compliance testing. Also supports quality control in pharmaceutical manufacturing where chloral hydrate is an active ingredient or byproduct.