質(zhì)量標(biāo)準(zhǔn): 品級(jí)Grade 指示劑級(jí)(IND)
(indicator (pH 4.2-6.2))
外觀Appearance 紅棕色粉末
紅外光譜鑒別Infrared spectrometry Conforms
水溶解試驗(yàn)solubility in water clear(0.1% in water)
pH變色域visual transition interval pH 4.2 (red) to pH 6.2 (yellow)
品級(jí)Grade ACS級(jí)
(ACS reagent, 95 %)
外觀Appearance 紅棕色粉末
紅外光譜鑒別Infrared spectrometry Conforms
染料含量Dye content, 95%
水溶解試驗(yàn)solubility in water clear(0.1% in water)
pH變色域visual transition interval pH 4.2 (red) to pH 6.2 (yellow)
λ 430 - 440 nm
c = 0.01 g/l; Water
消光系數(shù)Extinction Coefficient ≥17000
λ 256 - 260 nm
消光系數(shù)Extinction Coefficient ≥8000
Visual Transition Interval pH 4.2 Pink
Visual Transition Interval pH 5.5 Orange
Visual Transition Interval pH 6.2 Yellow
pH變色域visual transition interval pH 4.2 (red) to pH 6.2 (yellow)