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訂購電話:4001650900

溴甲酚綠鈉

Cas號(hào):
62625-32-5
分子結(jié)構(gòu)式:
MDL:
--MFCD00148898
分子式:
C21H13Br4NaO5S
分子量:
720.00
別名:
溴甲酚綠鈉鹽 Bromocresol Blue Sodium Salt Sodium Bromocresol Green 3′,3″,5′,5″-Tetrabromo-m-cresolsulfonphthalein sodium salt
產(chǎn)品訂購:
品名 規(guī)格 包裝 單價(jià) 貨期
溴甲酚綠鈉 ACS reagent, 90 % 25g 308元 咨詢客服
溴甲酚綠鈉 ACS reagent, 90 % 5g 107.8元 咨詢客服
溴甲酚綠鈉 98%,高純級(jí) 25g 371.8元 咨詢客服
溴甲酚綠鈉 98%,高純級(jí) 5g 118.8元 咨詢客服
溴甲酚綠鈉 IND 25g 140.8元 咨詢客服
性狀:
熔點(diǎn):230℃
質(zhì)量標(biāo)準(zhǔn):
   
   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(jí)Grade                               高純級(jí)  
                                       (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(jí)Grade                                ACS級(jí)  
                                     (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

貯存:

用途  PH指示劑(pH 3.8-5.4)。
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