2-Naphthalenecarboxamide, 3-hydroxy-4-[2-(2-methoxy-5-n itrophenyl)diazenyl]-N-(3-nitrophenyl)-

Name	Pigment Red 23
Synonyms	C.I. 12355 Irgalite Red pigment red 23 Pigment Red 23 C.I. Pigment Red 23 C.I. Pigment Red 157 NAPTHOL RED BLUE SHADE C.I. Pigment Red No. 23 PIGMENT RED 23 (TECH GRADE) (4-methylphenyl)(5-nitro-2-piperidin-1-ylphenyl)methanone 2-Naphthalenecarboxamide, 4-5-(aminocarbonyl)-2-methoxyphenylazo-3-hydroxy-N-phenyl- 3-Hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide 2-Naphthalenecarboxamide, 3-hydroxy-4-(2-methoxy-5-nitrophenyl)azo-N-(3-nitrophenyl)- 2-Naphthalenecarboxamide, 3-hydroxy-4-[2-(2-methoxy-5-n itrophenyl)diazenyl]-N-(3-nitrophenyl)- (4E)-4-[(2-methoxy-5-nitrophenyl)hydrazono]-N-(3-nitrophenyl)-3-oxo-3,4-dihydronaphthalene-2-carboxamide
CAS	6471-49-4
EINECS	229-313-2
InChI	InChI=1/C24H17N5O7/c1-36-21-10-9-17(29(34)35)13-20(21)26-27-22-18-8-3-2-5-14(18)11-19(23(22)30)24(31)25-15-6-4-7-16(12-15)28(32)33/h2-13,26H,1H3,(H,25,31)/b27-22+

Molecular Formula	C24H17N5O7
Molar Mass	487.42
Density	1.4576 (rough estimate)
Melting Point	330-340°C
Boling Point	583.02°C (rough estimate)
Water Solubility	<0.1 g/100 mL at 22 ºC
Solubility	<0.1 g/100 mL at 22°C
Vapor Presure	0Pa at 25℃
Appearance	Solid
Color	Dark Red
pKa	11.07±0.70(Predicted)
Storage Condition	Amber Vial, -20°C Freezer
Stability	Stable, but light sensitive. Incompatible with strong oxidizing agents.
Refractive Index	1.7500 (estimate)
Physical and Chemical Properties	hue or color: blue Red relative density: 1.45-1.55 Bulk density/(lb/gal):12.0-12.8 specific surface area/(m2/g):68 Ph/(10% slurry):4.5-6.6 oil absorption/(g/100g):33-83 hiding power: transparent diffraction curve: reflection curve: hue or shade: Red
Use	The pigment variety is dark blue red, slightly yellow compared with C.I. Pigment Red 146 is darker, light fastness is only grade 3, and pigment red resistance 146 is grade 5. Commodity particle size is small, transparent, high viscosity, solvent resistance is poor, resulting in the packaging ink in the crystallization phenomenon. Can be used for fabric printing, NC-type and water-based ink, can also be used for coating coloring, but the resistance to the coating performance is slightly poor. The number of brands put on the market is 28. This kind of pigment belongs to the general type of color phenolic red azo pigment, the application performance is general, the output is small, and the application value in industry is not very important.

LogP	5.04 at 25℃
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)

Last Update：2024-04-09 21:04:16

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Product Name: Pigment Red 23 Visit Supplier Webpage Request for quotation
CAS: 6471-49-4
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409

Wechat: 18301782025

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2-Naphthalenecarboxamide, 3-hydroxy-4-[2-(2-methoxy-5-n itrophenyl)diazenyl]-N-(3-nitrophenyl)- Request for Quotation