4197-25-5 Usage
Chemical Properties
VERY DARK BROWN TO BLACK FINE CRYSTALLINE POWDER
Uses
Sudan Black is a basic black dye that is used in staining triglycerides and lipids off some lipoproteins. Biological stain. Dyes and metabolites, Environmental Testing.
Definition
ChEBI: A member of the class of perimidines that is 2,2-dimethyl-2,3-dihydro-1H-perimidine carring a [4-(phenyldiazenyl)naphthalen-1-yl]diazenyl substituent at position 6. A fat-soluble dye predominantly used for demonstrating triglycerides in
rozen sections and for staining of protein bound lipids in paraffin sections.
Preparation
aniline diazotization, and Naphthalen-1-amine coupling, and its product to diazotization, and 2,2-Dimethyl-2,3-dihydro-1H-perimidine?coupling.
Safety Profile
A poison by intravenous route. When heated to decomposition it emits toxic vapors of NOx.
Properties and Applications
Blue-black. Soluble in ethanol, acetone and toluene. In concentrated sulfuric acid for purple light black, dilution after deep green light blue, blue to black precipitation. Dye ethanol solution to join concentrated hydrochloric acid for blue black; Join concentrated sodium hydroxide solution for skipper.
Standard
Light Fastness
Heat-resistant(℃)
water
Sodium Carbonate(5%)
Hydrochloric acid(5%)
Melting point
Stable
ISO
General
126
100
Insoluble
No change
No change
Standard
Light Fastness
Melting point
Stable
ISO
General
Check Digit Verification of cas no
The CAS Registry Mumber 4197-25-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,9 and 7 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4197-25:
(6*4)+(5*1)+(4*9)+(3*7)+(2*2)+(1*5)=95
95 % 10 = 5
So 4197-25-5 is a valid CAS Registry Number.
InChI: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
