Specification Appearance: Colorless to pale yellow viscous clear liquid Assay: Not less than 98 0% of C11H23N04 Specific Gravity: 1.473~1.477 Moisture: ¡Ü0.5% PH value: 9.0~11.0 3-Ethoxypropylamine: ¡Ü1.0% Residue on ignition : ¡Ü0.1% Heavy Metals: ¡Ü20ppm