Sudan Black B - Biological stain , CAS No.4197-25-5

CAS: 4197-25-5 Cat. No.: S109070 Molecular Weight: 456.54 Beilstein Registry Number: 723248 EC Number: 224-087-1 PubChem CID: 61336
AVAILABLE TO ORDER
GRADE & PURITY Biological Stain ? Biological stain grade — dyes characterized for staining cells and tissues. Use in histology and microscopy where staining consistency matters.
Synonyms
C.I. 26150 | 2,2-dimethyl-6-{[4-(phenyldiazenyl)naphthalen-1-yl]diazenyl}-2,3-dihydro-1H-perimidine | Fast Black HB | Q10861380 | Sudan Deep Black BB | Sudan Black | 2,2-dimethyl-6-[[4-(phenylazo)-1-naphthyl]azo]perimidine | Hexatype Black B | Solvent bla
Storage
Room temperature
Shipped In
Normal
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Size
Status
Price
Qty
25g
S109070-25g
1
$20.90
100g
S109070-100g
2
$78.90
500g
S109070-500g
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$291.90
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Why this grade

Biological stain Biological Stain for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 20 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

A fat-soluble diazo dye

Specifications

Synonyms
C.I. 26150 | 2, 2-dimethyl-6-{[4-(phenyldiazenyl)naphthalen-1-yl]diazenyl}-2, 3-dihydro-1H-perimidine | Fast Black HB | Q10861380 | Sudan Deep Black BB | Sudan Black | 2, 2-dimethyl-6-[[4-(phenylazo)-1-naphthyl]azo]perimidine | Hexatype Black B | Solvent bla
Specifications & Purity
Biological stain
Biochemical and Physiological Mechanisms
Sudan Black B is primarily used for staining of neutral triglycerides and lipids. Also a histochemical stain for chromosomes, Golgi apparatus, and leucocyte granules. It has the appearance of a dark brown to black powder with maximum absorption at 596-605
Storage
Room temperature
Shipped In
Normal
Grade
Biological Stain
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Names and Identifiers
Pubchem Sid504753765
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504753765
Canonical SmilesCC1(NC2=C3C(=C(C=C2)N=NC4=CC=C(C5=CC=CC=C54)N=NC6=CC=CC=C6)C=CC=C3N1)C
IUPAC Name(2,2-dimethyl-1,3-dihydroperimidin-6-yl)-(4-phenyldiazenylnaphthalen-1-yl)diazene
InChIKeyYCUVUDODLRLVIC-UHFFFAOYSA-N
INCHI1S/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
Isomeric SMILES CC1(NC2=C3C(=C(C=C2)N=NC4=CC=C(C5=CC=CC=C54)N=NC6=CC=CC=C6)C=CC=C3N1)C
WGK Germany 3
RTECS SD4431500
PubChem CID 61336
Molecular Weight 456.54
Beilstein 723248
Reaxy-Rn 8878215

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassNaphthalenes
Subclass1,1'-azonaphthalenes
Intermediate Tree Nodes Not available
Direct Parent1,1'-azonaphthalenes
Alternative Parents Quinazolinamines  Secondary alkylarylamines  Benzene and substituted derivatives  Azo compounds  Propargyl-type 1,3-dipolar organic compounds  Azacyclic compounds  Organopnictogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents 1,1'-azonaphthalene - Quinazolinamine - Secondary aliphatic/aromatic amine - Monocyclic benzene moiety - Azo compound - Azacycle - Secondary amine - Organoheterocyclic compound - Propargyl-type 1,3-dipolar organic compound - Organic 1,3-dipolar compound - Hydrocarbon derivative - Amine - Organic nitrogen compound - Organopnictogen compound - Organonitrogen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as 1,1'-azonaphthalenes. These are organonitrogen aromatic compounds that contain a central azo group, where each nitrogen atom is conjugated to the 1-position of a naphthalene ring system. Naphthalene is a compound made up of two fused benzene rings.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
POLI Tchem DNA polymerase iota (116820 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SNCA Tchem Alpha-synuclein (10960 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
TDP1 Tchem Tyrosyl-DNA phosphodiesterase 1 (345557 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

10 results found

Lot NumberCertificate TypeDateItem
I2212282Certificate of AnalysisMar 11, 2026 S109070
I2212301Certificate of AnalysisMar 11, 2026 S109070
I2212302Certificate of AnalysisMar 11, 2026 S109070
K2514749Certificate of AnalysisNov 03, 2025 S109070
K2514751Certificate of AnalysisNov 03, 2025 S109070
I2504121Certificate of AnalysisSep 13, 2025 S109070
D2521553Certificate of AnalysisApr 25, 2025 S109070
C2513145Certificate of AnalysisMar 21, 2025 S109070
H2415029Certificate of AnalysisJun 20, 2024 S109070
J2317125Certificate of AnalysisJul 30, 2022 S109070
Chemical and Physical Properties
SolubilitySoluble in oils, fats, warm petrolatum, paraffin, phenol, ethanol (10 mg/mL), acetone, benzene, toluene, and hydrocarbon. Insoluble in water.
Melt Point(°C)120-124°C
Molecular Weight456.500 g/mol
XLogP38.400
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count6
Rotatable Bond Count4
Exact Mass456.206 Da
Monoisotopic Mass456.206 Da
Topological Polar Surface Area73.500 Ų
Heavy Atom Count35
Formal Charge0
Complexity773.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Biological Stain
Histological and Cytological Section Staining: Principles and Methodological Essentials for Routine Pathology Stains and Structural Special Stains
Principles, Classification, and Clinical Laboratory Applications of Hematologic Cytochemical Staining
Principles, Applicable Scenarios, and Result Interpretation of Common Lipid Staining Methods
Structural Characteristics, Color-Change Mechanisms, and Application Selection of Azo Dye-Type Indicators
Practical Guide to TSA Tyramide Signal Amplification: How to Select Reagents, Optimize the Workflow, and Reduce Background When Detection Signals Are Weak for Low-Abundance Targets
Citations of This Product
References
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2. Xiaoyun Sun, Ke Shi, Siqi Mo, Jinfeng Mei, Jian Rong, Shaomang Wang, Xudong Zheng, Zhongyu Li.  (2022)  A sustainable reinforced-concrete-structured sponge for highly-recyclable oil adsorption.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2022.122483]
3. Yan Yu, Jing Wang, Xing-wang Wang, Yan Huang, Ren-yun Li, You-xiang Wang, Ke-feng Ren, Jian Ji.  (2022)  A Tough, Slippery, and Anticoagulant Double-Network Hydrogel Coating.  ACS Applied Polymer Materials,      [PMID:] [10.1021/acsapm.2c00800]
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5. Jiamin Gao, Lu Huang, Zhuomin Zhang, Gongke Li.  (2021)  Synthesis of sea urchin-shaped Au nanocrystals by double-strand diblock oligonucleotides for surface-enhanced Raman scattering and catalytic application.  NANOTECHNOLOGY,  32  (17): (175501).  [PMID:33440360] [10.1088/1361-6528/abdb61]
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10. Tao Wang, Wei Sun, Xingyuan Zhang, Haiyan Xu, Fei Xu.  (2017)  Waterborne Polyurethane Coatings with Covalently Linked Black Dye Sudan Black B.  Materials,  10  (11): (1247).  [PMID:29143785] [10.3390/ma10111247]
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