中文别名： 甲基红钠
英文名称： Methyl red sodium salt
CAS号： 845-10-3
甲基红钠盐
Methyl Red sodium salt
CAS号: 845-10-3
分子式: C15H14N3NaO2
分子量: 291.28
别名: 酸性红2
橙红色结晶性粉末。溶于水和乙醇。最大吸收波长437nm。
品级Grade 指示剂级（IND)
(indicator (pH 4.2-6.2))
外观Appearance 红棕色粉末
红外光谱鉴别Infrared spectrometry Conforms
水溶解试验solubility in water clear(0.1% in water)
pH变色域visual transition interval pH 4.2 (red) to pH 6.2 (yellow)
品级Grade ACS级
(ACS reagent, 95 %)
外观Appearance 红棕色粉末
红外光谱鉴别Infrared spectrometry Conforms
染料含量Dye content, 95%
水溶解试验solubility in water clear(0.1% in water)
pH变色域visual transition interval pH 4.2 (red) to pH 6.2 (yellow)
λ 430 - 440 nm
c = 0.01 g/l; Water
消光系数Extinction Coefficient ≥17000
λ 256 - 260 nm
消光系数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变色域visual transition interval pH 4.2 (red) to pH 6.2 (yellow)
酸碱指示剂，pH变色范围4.4(红)～6.2(黄)。氧化还原指示剂。用于硫酸铈滴定亚铁离子。
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