Dyestuff and Pigment

CAS# 4197-25-5

Molecular Formula : C29H24N6 

Packing: 25kg/bag

Application: Dye intermediate

Profile
Sudan Black B is one of the dyes used for Sudan staining. Similar dyes include Oil Red O, Sudan III, and Sudan IV.
Sudan Black B can be used to stain some other materials than the other Sudan dyes, as it is not so specific to lipids.

Technical Data Sheet 

Items	Specification	Results
Appearance	Black powder	Black powder
Shade	Similar to standard	Similar to standard
Melting point	≥118°C	136～144℃
Tinctorial strength	100±5%	97.81%
Fineness	80mesh ≤5%	4.2%
Moisture	≤1%	0.9%
Ash	≤1%	0.3%
Color differential value	≤1	0.39
Density	≥0.20	0.30
Assay	≥64%	67.0%
Insolubels in DMF		0.06%
PH value	6.0-7.0	6.9
Volatiles matter	ND	ND