Eriochrome black T price

Product Name: Eriochrome black T
CAS: 1787-61-7
Molecular Formula: C20H12N3NaO7S
Molecular Weight: 461.38
Product description: dark brown powder, soluble in hot water, cooling after a red-brown solution, slightly soluble in ethanol, slightly soluble in acetone. If hydrochloric acid in excess precipitation with sodium hydroxide such as a blue, brown, red-purple dark, according to sulfuric soluble in a blue-black solution, diluted generated by brown precipitate; In nitric acid in the metal indicator Orangenlösung.Commonly, a complex indicator, the determination of calcium, magnesium, barium, indium, strontium, zinc and manganese, lead, scandium, Zirconium, for example, determination of the hardness of water, Ca 2+, magnesium 2 + used, etc. The content of metal ions.