Catecho

【Appearance】Light grey to light brown flake 【Density】1.371 【Color/Form】 Monoclinic tablets, prisms from toluene Colorless crystals, discolors to brown on exposure to air and light, especially when moist 【Stability】 Stable. Substances to be avoided include acid chlorides, acid anhydrides, bases, oxidizing agents, nitric acid. Light sensitive; may discolour on exposure to air. Combustible.

【Storage temp】 Store at RT. 【Spectral properties】 MAX ABSORPTION (CYCLOHEXANE): 214 NM (LOG E= 3.83); 270 NM SH (LOG E= 3.34); 274 NM (LOG E= 3.40); 280 NM (LOG E= 3.35); SADTLER REFERENCE NUMBER: 268 (IR, PRISM) Index of refraction: 1.604