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Product Description
Solvent Red 24 CAS# 85-83-6
Solvent Red 24, also known as Sudan Red Ⅳ, oil soluble red, light red, etc., is chemically 1-(2-methyl-4 -(2-methylphenylazo) phenylazo) -2-naphthol, belonging to the azo dyes with molecular formula C24H20N4O and molecular weight 380.44. The product has good resistance to light, bright and pure color, widely used in a variety of thermoplastic coloring, can also be used for polyester fiber pulp coloring, paint and ballpoint ink coloring

Product Name: | Solvent Red 24 |
Synonyms: | 1-((2-Methyl-4-((2-methylphenyl)azo)phenyl)azo)-2-naphthalenol;1-((4-(o-tolylazo)-o-tolyl)azo)-2-naphtho;1-((E)-(2-Methyl-4-[(E)-(2-methylphenyl)diazenyl]phenyl)diazenyl)-2-naphth;1-(4-(o-Tolylazo)-o-tolylazo)-2-naphthol;1-(4-o-tolylazo-o-tolylazo)-2-naphthol;1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]-2-naphthaleno;2',3-Dimethyl-4-(2-hydroxynaphthylazo)azobenzene;2’,3-dimethyl-4-(2-hydroxynaphthylazo)azobenzene |
CAS: | 85-83-6 |
MF: | C24H20N4O |
MW: | 380.44 |
EINECS: | 201-635-8 |
Product Categories: | Solvents and Intermediates;Azo;Organics;Solvent Dyestuff;Aromatics;Intermediates & Fine Chemicals;Pharmaceuticals |
Mol File: | 85-83-6.mol |
Solvent Red 24 Chemical Properties |
Melting point | 199 °C (dec.)(lit.) |
Boiling point | 260°C |
density | 1.1946 (rough estimate) |
vapor pressure | 0Pa at 25℃ |
refractive index | 1.6000 (estimate) |
storage temp. | Flammables area |
solubility | Insoluble in water; soluble in benzene, methanol, acetone, isopropanol; slightly soluble in ethanol |
pka | 13.52±0.50(Predicted) |
Colour Index | 26105 |
form | Powder/Solid |
color | Red Brown |
Water Solubility | 23μg/L at 25℃ |
ε(extinction coefficient) | ≥12000 at 356-360nm in toluene at 0.008g/L≥26000 at 519-523nm in toluene at 0.008g/L |
λmax | 520 nm, 357 nm |
Merck | 14,8393 |
BRN | 709018 |
Stability: | Stable. Incompatible with strong oxidizing agents. |
Biological Applications | Detecting atherosclerosis; diapers; skin care products; shampoos; hair colors; stents; dental impression materials |
InChIKey | RCTGMCJBQGBLKT-PAMTUDGESA-N |
LogP | 6.66 |
IARC | 3 (Vol. 8, Sup 7) 1987 |
NIST Chemistry Reference | O-tolylazo-o-tolylazo-beta-naphthol(85-83-6) |
EPA Substance Registry System | C.I. Solvent Red 24 (85-83-6) |
Product Usage
Solvent Red 24 can be used to color all kinds of thermoplastics, such as polystyrene, polyvinyl chloride, etc., to give plastic products good color and light resistance; Suitable for polyester fiber pulp dyeing, so that the fiber color bright, high color fastness, often used in textile clothing; It is a common coloring agent for ink manufacturing, and can be used for printing and ballpoint pen ink; It is also used in coatings and paints to give the coating rich color, good hiding power and weather resistance; Can also be used for wax products, grease, leather and other coloring, such as crayons, shoe polish and other products. However, it is toxic, and its use should follow safety procedures, and it is strictly prohibited for food, medicine and other direct contact with people.
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