Mordant red 19

Mordant red 19
Names
	IUPAC name 5-Chloro-2-hydroxy-3-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-ylazo)-benzenesulfonic acid
	Other names C.I. 18735; Superchrome Red G; Magracrom Red 5G; Chrome Red 3G; Durochrome Red 5G; Eriochrome Red 4G; Metachrome Red 5G; Monochrome Red 5G; Solochrome Fast Red; Eriochromal Red 4G
Identifiers
CAS Number	25746-81-0 ; 1934-24-3 (sodium salt) ;
3D model (JSmol)	Interactive image;
ChemSpider	21173045 ;
ECHA InfoCard	100.042.925
PubChem CID	5477494;
	InChI InChI=1S/C16H13ClN4O5S/c1-9-14(16(23)21(20-9)11-5-3-2-4-6-11)19-18-12-7-10(17)8-13(15(12)22)27(24,25)26/h2-8,14,22H,1H3,(H,24,25,26) Key: LSFNRVBPDLEXDS-UHFFFAOYSA-N ; InChI=1/C16H13ClN4O5S/c1-9-14(16(23)21(20-9)11-5-3-2-4-6-11)19-18-12-7-10(17)8-13(15(12)22)27(24,25)26/h2-8,14,22H,1H3,(H,24,25,26) Key: LSFNRVBPDLEXDS-UHFFFAOYAQ;
	SMILES O=C1N(C2=CC=CC=C2)N=C(C)C1/N=N/C3=CC(Cl)=CC(S(O)(=O)=O)=C3O;
Properties
Chemical formula	C16H13ClN4O5S
Molar mass	408.81 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Mordant red 19 is an organic compound with the chemical formula C₁₆H₁₃ClN₄O₅S. It is classified as an azo dye.[1]

It is a mordant used in textile dyeing, usually in combination with chromium.[2] It is usually found as the sodium salt.

References

Klaus Hunger, Peter Mischke, Wolfgang Rieper, Roderich Raue, Klaus Kunde, Aloys Engel: "Azo Dyes" in Ullmann’s Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim.doi:10.1002/14356007.a03_245.
Baumann, Hans; Federkiel, Wilhelm. Dyeing of natural and synthetic fibers. (1957) DE 1008253

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