Sudan Black | CAS No. 4197-25-5

Sudan Black

Basic Information

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CAS Number

4197-25-5

Molecular Formula

C29H24N6

Molecular Weight

456.55 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Heterocyclic Compounds

Pharmaceutical Chemicals Pharmaceutical Intermediates Heterocyclic Intermediates

Fine Chemicals Dyes and Pigments Organic Dyes

Laboratory Chemicals Research Chemicals Biochemical Reagents

Basic Physical Properties

Melting Point

124°C

Boiling Point

726°C at 760 mmHg

Water Solubility

Soluble in oils, fats, warm petrolatum, paraffin, phenol, ethanol, acetone, benzene, toluene and hydrocarbon. Insoluble in water.

Flash Point

392.9°C

Solubility

Insoluble in water; soluble in ethanol, acetone, benzene, toluene, xylene, ethylene glycol

Refractive Index

1.4570 (estimate)

SMILES

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CC(N1)(C)NC2=CC=CC3=C(/N=N/C4=C5C=CC=CC5=C(/N=N/C6=CC=CC=C6)C=C4)C=CC1=C23

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+

InChIKey

YCUVUDODLRLVIC-VPHDGDOJSA-N

LogP

9.397299999999996

Topological Polar Surface Area

73.5 Å²

Hydrogen Bond Donor/Acceptor

2 / 6

Complexity

773

Safety Information

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Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Hazard Class

Class 6.1 Class 6.1

Synonyms & References

English

Sudan Black B
C.I. 26150
Fat Black HB
Solvent Black 3
fat black for microscopy
sudan black B practical grade
Sudanblack
(2,2-dimethyl-1,3-dihydroperimidin-6-yl)-(4-phenyldiazenylnaphthalen-1-yl)diazene
2,2-Dimethyl-6-{[4-(phenyldiazenyl)-1-naphthyl]-diazenyl}-2,3-dihydro-1H-perimidine
3,3-DIMETHYL-8-(2-[4-(2-PHENYLDIAZEN-1-YL)NAPHTHALEN-1-YL]DIAZEN-1-YL)-2,4-DIAZATRICYCLO[7.3.1.0(5,13)]TRIDECA-1(12),5,7,9(13),10-PENTAENE
SUDAN BLACK B, C.I. 26150 CERTIFIED FOR MICROSCOPICAL STAINING
Sudan Black B, certified
SudanBlackB,highpuritybiologicalstain100GR
SudanBlackB,highpuritybiologicalstain25GR
SUDAN BLACK B (FAST BLACK HB)
Sudan Black B,high purity biological stain
Ceres black BN
2,3-Dihydro-2,2-dimethyl-6-[[4-(phenylazo)-1-naphthyl]azo]perimidine
Solvent Black 3
Sudan Black
C.I. Solvent Black 3
Fast Black HB
Typogen Black
Acetylated Sudan Black B
Lacquer Black S
Nubian Black BT
Hexatype Black B
Lacquer Black VB
Fast Black HBN
Oil Black BT
Sudan Deep Black BB

MDL Number

MFCD00006919

Customs Code

32041900

FAQ

What are the physical and chemical properties of Sudan Black (CAS: 4197-25-5)?

Sudan Black (CAS: 4197-25-5) is a deep brown to black dye commonly used in microscopy and histology. It is insoluble in water but soluble in organic solvents. Chemically, it is a polycyclic aromatic hydrocarbon and exhibits strong basic properties. Its molecular weight is around 172.23 g/mol. Sudan Black is not highly reactive but tends to adsorb onto surfaces, which affects its stability and solubility in different media.

How is Sudan Black (CAS: 4197-25-5) typically synthesized?

Sudan Black (CAS: 4197-25-5) is synthesized through a multi-step process involving the condensation of anthracene with amines. The synthesis typically requires dehydration of anthracene derivatives, followed by coupling with aromatic amines. The process involves the use of strong bases like sodium hydroxide and is carried out under reflux conditions to achieve high yield and selectivity.

What industries use Sudan Black (CAS: 4197-25-5)?

Sudan Black (CAS: 4197-25-5) is widely used in the pharmaceutical industry for staining tissues in histology. It is also applied in the polymer industry for dyeing and coloring applications. Additionally, Sudan Black is utilized in the production of sensors and as a marker in analytical chemistry. Its strong color and stability make it suitable for various applications requiring deep, clear staining.

What precautions should be taken when handling Sudan Black (CAS: 4197-25-5)?

When handling Sudan Black (CAS: 4197-25-5), it is essential to wear appropriate personal protective equipment (PPE) such as gloves, laboratory coat, and eye protection. Sudan Black should be stored in a cool, dry place away from direct sunlight and heat sources. Spills should be cleaned up carefully using absorbent material and disposed of according to local regulations. Always consult the Safety Data Sheet (SDS) for detailed handling and disposal information.