Reactive black 5 - Dye content ≥50% , CAS No.17095-24-8

CAS: 17095-24-8 Cat. No.: R351226 Molecular Weight: 991.82 Beilstein Registry Number: 8184406 EC Number: 241-164-5 PubChem CID: 135442967
AVAILABLE TO ORDER
GRADE & PURITY Dye content ≥50%
Synonyms
Oxyquinol Reference Spectrum | tetrasodium 4-amino-5-hydroxy-3,6-bis[(4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2,7-disulfonate | Celmazol Black B | 2,7-Naphthalenedisulfonic acid, 3,6-(bis(4-((2-hydroxyethyl)sulfonyl)phenyl)bis(azo))
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
100g
R351226-100g
5
$74.90
500g
R351226-500g
1
$249.90
Enter a quantity for the sizes you want to add.
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Why this grade

Dye content ≥50% 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 26 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Oxyquinol Reference Spectrum | tetrasodium 4-amino-5-hydroxy-3, 6-bis[(4-{[2-(sulfonatooxy)ethyl]sulfonyl}phenyl)diazenyl]naphthalene-2, 7-disulfonate | Celmazol Black B | 2, 7-Naphthalenedisulfonic acid, 3, 6-(bis(4-((2-hydroxyethyl)sulfonyl)phenyl)bis(azo))
Specifications & Purity
Dye content ≥50%
Storage
Room temperature
Shipped In
Normal
Names and Identifiers
Pubchem Sid488202908
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488202908
Canonical SmilesC1=CC(=CC=C1N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)S(=O)(=O)CCOS(=O)(=O)[O-])N)O)S(=O)(=O)CCOS(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
IUPAC Nametetrasodium;4-amino-5-hydroxy-3,6-bis[[4-(2-sulfonatooxyethylsulfonyl)phenyl]diazenyl]naphthalene-2,7-disulfonate
InChIKeyHFIYIRIMGZMCPC-UHFFFAOYSA-J
INCHI1S/C26H25N5O19S6.4Na/c27-23-22-15(13-20(53(37,38)39)24(23)30-28-16-1-5-18(6-2-16)51(33,34)11-9-49-55(43,44)45)14-21(54(40,41)42)25(26(22)32)31-29-17-3-7-19(8-4-17)52(35,36)12-10-50-56(46,47)48;;;;/h1-8,13-14,32H,9-12,27H2,(H,37,38,39)(H,40,41,42)(H,43,44,45)(H,46,47,48);;;;/q;4*+1/p-4
Isomeric SMILES C1=CC(=CC=C1N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])N=NC4=CC=C(C=C4)S(=O)(=O)CCOS(=O)(=O)[O-])N)O)S(=O)(=O)CCOS(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
WGK Germany 3
RTECS QJ6402500
PubChem CID 135442967
Molecular Weight 991.82
Beilstein 8184406

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.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassNaphthalenes
SubclassNaphthalene sulfonic acids and derivatives
Intermediate Tree Nodes Naphthalene sulfonates
Direct Parent2-naphthalene sulfonates
Alternative Parents 2-naphthalene sulfonic acids and derivatives  1-sulfo,2-unsubstituted aromatic compounds  Benzenesulfonyl compounds  Phenoxides  Sulfuric acid monoesters  Alkyl sulfates  Sulfones  Organosulfonic acids  Azo compounds  Propargyl-type 1,3-dipolar organic compounds  Primary amines  Hydrocarbon derivatives  Organic oxides  Organic sodium salts  Organooxygen compounds  Organic cations  
Molecular FrameworkAromatic homopolycyclic compounds
Substituents 2-naphthalene sulfonic acid or derivatives - 2-naphthalene sulfonate - Arylsulfonic acid or derivatives - Benzenesulfonyl group - 1-sulfo,2-unsubstituted aromatic compound - Phenoxide - Sulfuric acid monoester - Monocyclic benzene moiety - Sulfate-ester - Alkyl sulfate - Sulfuric acid ester - Organic sulfuric acid or derivatives - Sulfonyl - Organosulfonic acid - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Sulfone - Azo compound - Organic alkali metal salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Organic salt - Organic sodium salt - Primary amine - Amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Organic nitrogen compound - Organic cation - Aromatic homopolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as 2-naphthalene sulfonates. These are organic aromatic compounds that contain a naphthalene moiety that carries a sulfonic acid group at the 2-position. Naphthalene is a bicyclic compound that is made up of two fused benzene ring.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
NR3C1 Tclin Glucocorticoid receptor (14987 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
PPARG Tclin Peroxisome proliferator-activated receptor gamma (15191 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
THRB Tclin Thyroid hormone receptor beta-1 (7926 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.

6 results found

Lot NumberCertificate TypeDateItem
E2325906Certificate of AnalysisMar 11, 2026 R351226
E2325917Certificate of AnalysisMar 11, 2026 R351226
I2515652Certificate of AnalysisAug 04, 2025 R351226
I2515658Certificate of AnalysisAug 04, 2025 R351226
E2325905Certificate of AnalysisMay 10, 2023 R351226
F2523068Certificate of AnalysisMay 10, 2023 R351226
Chemical and Physical Properties
SolubilitySoluble in water (550 mg/ml at 20° C).
Melt Point(°C)>180° C
Molecular Weight991.800 g/mol
XLogP3
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count24
Rotatable Bond Count12
Exact Mass990.875 Da
Monoisotopic Mass990.875 Da
Topological Polar Surface Area462.000 Ų
Heavy Atom Count60
Formal Charge0
Complexity2030.000
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 Count5
Citations of This Product
References
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18. Xinmiao Xu, Yi Zhang, Yong Chen, Yu Liu.  (2024)  Vapor-Driven Crosslinked Hydroxypropyl-β-Cyclodextrin Electrospun Nanofibrous Membranes for Ultrafast Dye Removal.  Chemistry-Switzerland,  (4): (506-516).  [PMID:] [10.3390/chemistry6040029]
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