P4125

Patent Blue Violet (Patent Blue)

practical grade

• Sinonimo/i: Ethanaminium, N-[4-[[4-(diethylamino)phenyl](2,5-disulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-, inner salt, sodium salt lymphazurin, Isosulfan Blue
• Formula condensata: C₂₇H₃₁N₂O₆S₂Na
• Numero CAS: 68238-36-8
• Peso molecolare: 566.66
• Numero MDL: MFCD00012119
• Codice UNSPSC: 12171500

Proprietà

• Grado: practical grade
• Composizione: Dye content, ~50%
• Punto di fusione: 260 °C (dec.)
• Stringa SMILE: [Na+].CCN(CC)c1ccc(cc1)\C(=C2/C=CC(\C=C2)=[N+](\CC)CC)c3ccc(cc3S([O-])(=O)=O)S([O-])(=O)=O

Descrizione

Altre note

Literature for Patent Blue Violet discusses two dyes which are very similar, Color Index Numbers 42045 and 42051. Structurally they differ with regard to the substituents on one of the aromatic rings. C.I. 42045 is 2,4-disulfo-substituted while C.I. 42051 is 2,4-disulfo-5-hydroxy-substituted.
Our NMR studies show that P 1888 and P 4125 are neither, but are instead 2,5-disulfo-substituted dyes. As yet no C.I. No. or common name has been established for this dye. We will continue to list P 1888 and P 4125 as Patent Blue Violet until the distinction has been clarified.