Appearance Colorless clear liquid Assay 99.8%min Crystallization point 18.1℃min Transmittance(400nm) 96.0%min Refrative index(20℃) 1.4775-1.4790 Moisture 0.1% max

Appearance White crystal Assay 99.5%min Melting point 207~212℃ Moisture 0.3% max Ash 0.05% max Calcium 200ppm max Transparency 100%

Appearance Colorless clear liquid Assay 98%min

Appearance Colorless to light yellow liquid Assay 99%min

Appearance light yellow liquid Assay 98%min

Appearance clear colorless liquid Assay 98min%

Appearance Colorless liquid Assay 98min% Boiling point 233-235 ℃ Melting point 0±1℃ Refractive index 1.549-1.551 Water 0.1max Acid 0.3 Xylene 0.1% max

Appearance Slight yellow powder Purity (HPLC) 98.0% min Identification IR HPLC MS Melting point 223-232℃ Clarity of solution 0.3 gram in 3ml DMF clear solution

Appearance White to light yellow crystal Assay 99%min Melting point 244-246°C Water 1.0% max

Appearance Light yellow crystal to amber liquid Assay 98% min Melting point 30-36℃ Odor Caramel odor, Roasted odor, Zymolysis Foodstuff odor

Appearance Light yellow to brown-red oily transparent liquid Assay 99%min P-toluidine 0.5% max Toluidine 0.5% max Low-boiling 0.1% max High-boiling 0.1% max Water 0.3% max

Appearance White crystalline powder Assay 98.0-104.0% Identification Passed PH 9.5-10.5 Sulfate 0.12% max Chloride 350ppm max Organic volatile impurities Passed Water 5.0% max Relative substances Passed Heay metals(Pb) 0.001% max