Solvent Black 3

Solvent Black 3
Names
	IUPAC name (2,2-dimethyl-1,3-dihydroperimidin-6-yl)-(4-phenylazo-1-naphthyl)diazene
	Other names Sudan Black; Fat Black HB; Solvent Black 3; C.I. 26150
Identifiers
CAS Number	4197-25-5 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:88216 ;
ChemSpider	55272 ;
ECHA InfoCard	100.021.898
MeSH	Sudan+Black+B
PubChem CID	61336;
UNII	9YDL1Q990E ;
CompTox Dashboard (EPA)	DTXSID0052091 ;
	InChI InChI=1S/C29H24N6/c1-29(2)30-26-14-8-13-22-25(17-18-27(31-29)28(22)26)35-34-24-16-15-23(20-11-6-7-12-21(20)24)33-32-19-9-4-3-5-10-19/h3-18,30-31H,1-2H3/b33-32+,35-34+ Key: YCUVUDODLRLVIC-VPHDGDOJSA-N ; InChI=1/C29H24N6/c1-29(2)30-26-14-8-13-22-25(17-18-27(31-29)28(22)26)35-34-24-16-15-23(20-11-6-7-12-21(20)24)33-32-19-9-4-3-5-10-19/h3-18,30-31H,1-2H3/b33-32+,35-34+ Key: YCUVUDODLRLVIC-VPHDGDOJBF;
	SMILES N(=N/c5c1c(cccc1)c(/N=N/c4c2cccc3NC(Nc(c23)cc4)(C)C)cc5)\c6ccccc6;
Properties
Chemical formula	C29H24N6
Molar mass	456.54 g/mol
Melting point	120 to 124 °C (248 to 255 °F; 393 to 397 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Solvent Black 3 is an azo dye. It is a non-fluorescent, relatively thermostable lysochrome (fat-soluble dye) diazo dye used for staining of neutral triglycerides and lipids on frozen sections and some lipoproteins on paraffin sections. It has the appearance of a dark brown to black powder with maximum absorption at 596–605 nm and melting point 120–124 °C. It stains blue-black.