Mordant red 19

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

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 Y 1934-24-3 (sodium salt) N
3D model (JSmol)	Interactive image
ChemSpider	21173045 N
ECHA InfoCard	100.042.925
PubChem CID	5477494
UNII	9X3KZ37M9X Y
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) N Key: LSFNRVBPDLEXDS-UHFFFAOYSA-N 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). N verify (what is YN ?) Infobox references

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

Mordant red 19
Color coordinates
Hex triplet	#AE0C00
sRGBB (r, g, b)	(174, 12, 0)
HSV (h, s, v)	(4°, 100%, 68%)
CIELChuv (L, C, h)	(36, 119, 13°)
Source	ColorHexa[3]
ISCC–NBS descriptor	Deep red
B: Normalized to [0–255] (byte)

See also

• Alizarin
• List of colors

References

1. 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.
2. DE 1008253, Baumann, Hans & Federkiel, Wilhelm, "Verfahren zum Färben von natürlichen Fasern und Fasern aus Polyamiden oder Polyurethanen [Process for the dyeing of natural fibres and fibres of polyamides or polyurethanes]", published 1957-05-16, assigned to BASF AG
3. "Mordant red 19 / #ae0c00 hex color". ColorHexa. Retrieved 2023-08-01.

External links

• Google images of Mordant Red 19