Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate

Basic Information

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CAS Number

548-80-1

Molecular Formula

C16H9N3Na2O10S2

Molecular Weight

469.41 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Fine Chemicals Surfactants Anionic Surfactants

Basic Physical Properties

Melting Point

300℃

Boiling Point

°Cat760mmHg

SMILES

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C1=CC(=CC=C1N=NC2=C(C3=C(C=C(C=C3C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])O)O)[N+](=O)[O-].[Na+].[Na+]

InChI

InChI=1S/C16H11N3O10S2.2Na/c20-12-7-11(30(24,25)26)5-8-6-13(31(27,28)29)15(16(21)14(8)12)18-17-9-1-3-10(4-2-9)19(22)23;;/h1-7,20-21H,(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b18-17+;;

InChIKey

AXUUHWJXDWBCSG-QIKYXUGXSA-L

LogP

3.0680000000000036

Topological Polar Surface Area

217.05999999999997 Å²

Hydrogen Bond Donor/Acceptor

4 / 13

Complexity

873

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

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

Sensitiveness

Sensitive to moisture

Synonyms & References

English

Acid Red 176
4,5-DIHYDROXYNAPHTHALENE-3-(4-NITROPHENYLAZO)-2,7-DISULFONIC ACID DISODIUM SALT
disodium;4,5-dihydroxy-3-[(4-nitrophenyl)diazenyl]naphthalene-2,7-disulfonate
Khromotrop 2B
Chromotrope 2B, for microscopy
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-(2-(4-nitrophenyl)diazenyl)-, sodium salt (1:2)
SCHEMBL590957
Q27269278
disodium 3-[(4-nitrophenyl)hydrazinylidene]-5-oxidanyl-4-oxidanylidene-naphthalene-2,7-disulfonate
C.I. 16575
Disodium 4,5-dihydroxy-3-(p-nitrophenylazo)naphthalene-2,7-disulphonate
C.I. MORDANT BLACK 93
sodium (E)-4,5-dihydroxy-3-((4-nitrophenyl)diazenyl)naphthalene-2,7-disulfonate
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-((4-nitrophenyl)azo)-, disodium salt
D89265
MFCD00003951
Chromotrope 2B
W-105599
NSC 45542
AKOS015903025
PCR 2B
Naphtocard Fast Red 3B
Chromatrope 2B
EINECS 208-959-9
SCHEMBL2866134
CR-2B
2,7-Naphthalenedisulfonic acid, 4,5-dihydroxy-3-[(4-nitrophenyl)azo]-, disodium salt
DTXSID0060278
p-Nitrobenzeneazochromotropic acid sodium salt
548-80-1
NSC-45542

MDL Number

MFCD00003951

Customs Code

2927000090

FAQ

What are the physical and chemical properties of Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate (CAS: 548-80-1)?

Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate is a crystalline compound with a molecular weight of approximately 517.12 g/mol. It has a high solubility in water and a low solubility in organic solvents. The compound is known for its stability in acidic and neutral environments but is reactive towards strong bases. It can form complexes with metal ions and exhibits color changes upon dilution.

How is Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate (CAS: 548-80-1) typically synthesized?

Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate is typically synthesized through a multi-step process involving diazotization, condensation with naphthalene, and sulfonation. The synthesis involves the use of sodium nitrite as a diazotizing agent and sulfuric acid as a sulfonating agent. The reaction is selective and yields a high percentage of the desired product, making it suitable for industrial scale production.

What industries use Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate (CAS: 548-80-1)?

Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate is used in various industries. It is a key component in the production of dyes and pigments, particularly in the textile and paper industries. Additionally, it finds applications in the pharmaceutical sector for the synthesis of intermediates and as a coloring agent in pharmaceutical formulations. It is also used in the electronic industry as a dopant material in semiconductors and as a component in sensors and optical devices.

What precautions should be taken when handling Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate (CAS: 548-80-1)?

When handling Disodium 4,5-dihydroxy-3-[(E)-(4-nitrophenyl)diazenyl]-2,7-naphthalenedisulfonate, it is essential to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. The compound should be stored in a closed container to prevent moisture absorption. Laboratory procedures should be conducted in a well-ventilated area or a fume hood to minimize inhalation risks. In case of a spill, it is important to follow the safety data sheet (SDS) guidelines for proper cleanup and disposal. This compound is not flammable but requires caution due to its reactivity with strong bases.