Naphthol Green B

Names
IUPAC name

trisodium; iron(3+); 5-nitroso-6-oxidonaphthalene-2-sulfonate

Other names

Acid Green 1; C.I. 10020

Identifiers

CAS Number

* 19381-50-1 Y

3D model (JSmol)

* Interactive image

ChEBI |

* CHEBI:87073 Y

EC Number |

* 243-010-2

PubChem CID

* 6915910

UNII |

* W60I5H3VMQ Y

InChI

* InChI=1S/3C10H7NO5S.Fe.3Na/c3*12-9-4-1-6-5-7(17(14,15)16)2-3-8(6)10(9)11-13;;;;/h3*1-5,12H,(H,14,15,16);;;;/q;;;+3;3*+1/p-6

Key: JMXROTHPANUTOJ-UHFFFAOYSA-H

SMILES

* C1=CC2=C(C=CC(=C2N=O)[O-])C=C1S(=O)(=O)[O-].C1=CC2=C(C=CC(=C2N=O)[O-])C=C1S(=O)(=O)[O-].C1=CC2=C(C=CC(=C2N=O)[O-])C=C1S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Fe+3]

Properties

Chemical formula

| C30H15FeN3Na3O15S3
Molar mass | 878.45 g·mol−1

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

N verify (what is YN ?)
Infobox references

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Naphthol Green B is a coordination complex of iron that is used as a dye.[1] The ligand is a sulfonated derivative of 1-nitroso-2-naphthol.

## Contents

* 1 Structure
* 2 Applications
* 3 References
* 4 External links

## Structure

Naphthol Green B is the sodium salt of Naphthol Green Y (C.I. 10005). The organic ligands each bind to iron as bidentate ligands through the nitrogen and the anionic phenoxide groups. Three ligands are bound to the iron.[2]

## Applications

Its absorption maximum is 714 nm in water.[3] It is water-soluble.

Naphthol Green B is used in histology to stain collagen.[4] Moreover, it is used for polychrome stains with animal tissue. For industry purposes Naphthol Green B is used for staining wool, nylon, paper, anoxidized aluminium and soap.[3]

## References

1. ↑ Raue, Roderich; Corbett, John F. (2000). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_383.
2. ↑ Wang, Xiao; Zhang, Tianyong; Li, Bin; Yang, Qiusheng; Jiang, Shuang (2014). "Efficient Hydroxylation of Aromatic Compounds Catalyzed by an Iron(II) Complex with H2 O2". Applied Organometallic Chemistry 28 (9): 666–672. doi:10.1002/aoc.3178.
3. ↑ 3.0 3.1 Horobin, RW. und Kiernan, JA. (2002): Conn's Biological Stains: A Handbook of Dyes, Stains and Fluorochromes for Use in Biology and Medicine. BIOS Scientific Publ., 10th edition; ISBN 1-85996-099-5; page 101 and 102
4. ↑ Histological and Histochemical Methods: Theory and Practice, 4th edition, J. A. Kiernan

## External links

* Naphthol Green B at StainsFile

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*[CID]: Compound ID