中文別名: 溴甲酚紫鈉 英文名稱: Bromocresol purple sodium salt CAS號: 62625-30-3 溴甲酚綠鈉
Bromocresol green sodium salt
CAS號: 62625-32-5
分子式: C21H13Br4NaO5S
分子量: 720.00
別名: 溴甲酚綠鈉鹽
品級Grade 分析純
(AR) 外觀Appearance Dark green to black powder or crystals 紅外光譜鑒別Infrared spectrum Conforms to structure 純度Purity(HPLC) ≥90.0% PH變色范圍Visual range 3.8(yellow)-5.4(blue) 灼燒殘?jiān)黂esidue on ignition(as sulfate) 8.5-11.5% 項(xiàng)目(name) 指示劑(Ind) (indicator grade) 水溶解試驗(yàn) 合格 PH變色范圍 3.8(黃色)-5.4(藍(lán)色) 灼燒殘?jiān)?以硫酸鹽計(jì)) 8.5-11.5% 品級Grade 高純級 (High pure) 外觀Appearance 暗綠色至棕色、黑色粉末或結(jié)晶 紅外光譜鑒別Infrared spectrometry Conforms 純度Purity 98.0 to 105.0 % (以干基計(jì)) pH變色域Transition interval: pH 3.8 (yellow) to pH 5.4 (blue) 靈敏性試驗(yàn)Sensitiveness test Pass 品級Grade ACS級 (ACS reagent, 90 %) 外觀Appearance 暗綠色至棕色、黑色粉末或結(jié)晶 紅外光譜鑒別Infrared spectrometry Conforms 純度Purity ≥90.0% (HPLC) λ 614 - 618 nm c = 0.01g/L, Water 消光系數(shù)Extinction Coefficient ≥25000 λ 394 - 406 nm 消光系數(shù)Extinction Coefficient ≥8000 λ 306 - 310 nm 消光系數(shù)Extinction Coefficient ≥10000 pH變色域Transition interval: pH 3.8 (yellow) to pH 5.2 (blue) Visual Interval Pass pH 3.8 = Yellow Visual Interval Pass pH 4.5 = Green Visual Interval Pass pH 5.4 = Blue 不溶物Insoluble Matter. c = 0.1g/100ml; Water PH指示劑(pH 3.8-5.4)。
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