Methyl Red sodium salt

MDL：
--MFCD00002426

Molecular Formula：
C15H14N3NaO2

Molecular Weight：
291.28

Alias：
酸性红2 4-Dimethylaminoazobenzene-2′-carboxylic acid sodium salt Acid Red 2

Product order：

Name	Specifications	Packing	Price	Delivery
Methyl Red sodium salt	ACS reagent, 95 %	100g	RMB 624.8	现货
Methyl Red sodium salt	ACS reagent, 95 %	25g	RMB 147.4	促销
Methyl Red sodium salt	IND	500g	RMB 1097.8	现货
Methyl Red sodium salt	IND	100g	RMB 360.8	现货
Methyl Red sodium salt	IND	25g	RMB 94.6	促销

Character：
橙红色结晶性粉末。溶于水和乙醇。最大吸收波长437nm。

Quality Standard：
   
   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)

Storage：
密封阴凉干燥避光保存。
用途  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