* Appearance: White or almost white crystalline powder

* Odor: odorless

* Solubility: Freely soluble in water (1 : 4.5), slightly soluble in alcohol (1 : 90) and acetone, soluble in chloroform and insoluble in ether.

* Appearance of solution: Clear, not more intense than Y7

* Melting point: About 205.0 - 209 ℃ (with decomposition)

* Identification: Meet the requirements