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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