Phenylfluorone/2,6,7-Trihydroxy-9-phenylisoxanthen-3-one/Florone black

English Name:Phenylfluorone；2,6,7-Trihydroxy-9-phenylisoxanthen-3-one；Florone black；9-Phenyl-2,6,7-trihydroxy-3-fluorone；2,6,7-Trihydroxy-9-phenyl-3H-xanthen-3-one；9-Phenyl-2,3,7-trihydroxy-6-fluorone 2,3,7-Trihydroxy-9-phenylxanthen-6-one；2,6,7-Trihydroxy-9-phenylfluor

Other names: germanium reagent; Phenyl fluorenone; Phenylfluorone; 2,6,7-trihydroxy-9-phenylfluorone; 2,6,7-trihydroxy-9-phenyl-3h-xanthan-3-one; 9-phenyl-2,3,7-trihydroxy-6-oxanthrone; 2,6,7-trihydroxy-9-phenyl-6-fluorone; 9-phenyl-2,3,7-trihydroxy-6-fluorone

CAS No.: 975-17-7

C19H12O5=320.30

Grade: ar

Ethanol dissolution test: qualified

Germanium sensitivity test: acceptable

Burning residue (calculated by sulfate): ≤ 0.1%

 Physicochemical Properties: orange red crystalline powder. Soluble in alkali, soluble in the mixture of ethanol hydrochloric acid and ethanol sulfuric acid, slightly soluble in ethanol, insoluble in water, benzene and chloroform. Melting point >300 ℃. The maximum absorption wavelength is 552nm.

Purpose: biochemical research. Photometric determination of germanium, molybdenum, niobium, antimony, tin and tantalum.

Save: RT, away from light