
Hydroxy naphthol blue
CAS:
Ref. 3D-FH161019
1kg
1,088.00€
50g
182.00€
100g
290.00€
250g
487.00€
500g
729.00€

Product Information
Name:Hydroxy naphthol blue
Brand:Biosynth
Description:羟基萘酚蓝是一种合成偶氮染料,是一种含有官能团RN=N-R的化合物。羟基萘酚蓝三钠盐和二钠盐用作分光光度法测定碱土和镧系元素含量的指示剂,最长为~650 nm(λ麦克斯= 647.6 纳米)。羟基萘酚蓝钠盐的常见用途的一个例子是通过测量钙和镁的浓度来确定水的硬度。在碱性或碱性pH值下,羟基萘酚蓝与金属离子形成粉红色/红色络合物,用EDTA滴定后,羟基萘酚蓝被释放出来,使溶液变成蓝色,指示终点。
Notice:Our products are intended for lab use only. For any other use, please contact us.
Chemical properties
Molecular weight:620.48 g/mol
Formula:C20H11N2O11S3·3Na
Color/Form:Black Blue Powder
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