中文名称: |
溴甲酚绿钠 |
英文名称: |
Bromocresol green sodium salt |
CAS号: |
62625-32-5 |
级别: |
IND |
溴甲酚绿钠
Bromocresol green sodium salt
CAS号: 62625-32-5
分子式: C21H13Br4NaO5S
分子量: 720.00
别名: 溴甲酚绿钠盐
品级Grade 分析纯
(AR)
外观Appearance Dark green to black powder or crystals
红外光谱鉴别Infrared spectrum Conforms to structure
纯度Purity(HPLC) ≥90.0%
PH变色范围Visual range 3.8(yellow)-5.4(blue)
灼烧残渣Residue on ignition(as sulfate) 8.5-11.5%
项目(name) 指示剂(Ind)
(indicator grade)
水溶解试验 合格
PH变色范围 3.8(黄色)-5.4(蓝色)
灼烧残渣(以硫酸盐计) 8.5-11.5%
品级Grade 高纯级
(High pure)
外观Appearance 暗绿色至棕色、黑色粉末或结晶
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity 98.0 to 105.0 % (以干基计)
pH变色域Transition interval: pH 3.8 (yellow) to pH 5.4 (blue)
灵敏性试验Sensitiveness test Pass
品级Grade ACS级
(ACS reagent, 90 %)
外观Appearance 暗绿色至棕色、黑色粉末或结晶
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity ≥90.0% (HPLC)
λ 614 - 618 nm
c = 0.01g/L, Water
消光系数Extinction Coefficient ≥25000
λ 394 - 406 nm
消光系数Extinction Coefficient ≥8000
λ 306 - 310 nm
消光系数Extinction Coefficient ≥10000
pH变色域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指示剂(pH 3.8-5.4)。
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