品級Grade 分析純
(AR)
外觀Appearance orange-brown to dark green powder
紅外光譜Infrared spectrometry Conforms to Structure
水溶解試驗Solubility (0.1% in water) clear
pH變色域Transition interval(pH) from pH 6.0 (yellow) to pH 7.6 (blue)
干燥損失Drying loss ≤7.0 %
品級Grade ACS級
(ACS reagent)
外觀Appearance orange-brown to dark green powder
紅外光譜Infrared spectrum Conforms to Structure
Wavelength 614 - 618 nm
c = 0.005 g/l; 0.1 N NAOH
消光系數Extinction Coefficient ≥35000
Wavelength 392 - 396 nm
消光系數Extinction Coefficient ≥8000
Wavelength 305 - 309 nm
Extinction Coefficient ≥13000
變色域Vis. transition interval from pH 6.0 (yellow) to pH 6.7(Green)to pH 7.6 (blue)
溶液澄清度Clarity of solution Clear to Very Slightly Hazy Orange to Black