Victoria blue R

Names
IUPAC name [4-[Bis[4-(dimethylamino)phenyl]methylidene]naphthalen-1-ylidene]-ethylazanium chloride
Other names Basic Blue 11; Victoria Blue RS; Victoria Lake Blue R; Basic Blue; Hidaco Victoria Blue R; Aizen Victoria Blue BOH
Identifiers
CAS Number	2185-86-6
ChEBI	CHEBI:90518 Y
ECHA InfoCard	100.016.884
PubChem CID	16599
CompTox Dashboard (EPA)	DTXSID90883804
Properties
Chemical formula	C29H32ClN3
Molar mass	458.05 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Victoria blue R is a dye with formula C₂₉H₃₂N₃Cl. It has a blue colour that changes to yellow at low pH values.

Physical data

Fastness

The dye exerts a high light fastness and washing fastness.

UV/VIS absorption

Victoria Blue R has an absorption peak of around 610nm.