5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid is a complex organic compound characterized by its red light brown color. It exhibits solubility in water, resulting in a golden orange hue, and in ethanol, displaying a red orange brown shade. When dissolved in concentrated sulfuric acid, it turns orange and becomes golden yellow upon dilution. The dye's aqueous solution turns magenta upon the addition of strong caustic. 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid demonstrates various levels of fastness to different conditions, such as ironing, light, fulling, perspiration, soaping, water, alkali, and acid, as indicated by its ISO ratings.

6411-50-3

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Basic information
1. Product Name: 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid
2. Synonyms: 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid;C.I.44525;C.I.Mordant Brown 26;Chromoxane Brown 5R
3. CAS NO:6411-50-3
4. Molecular Formula: C27H22 N2 O7
5. Molecular Weight: 486.47
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 6411-50-3.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: 777.1°C at 760 mmHg
3. Flash Point: 423.8°C
4. Appearance: /
5. Density: 1.4g/cm³
6. Vapor Pressure: 2.04E-25mmHg at 25°C
7. Refractive Index: 1.668
8. Storage Temp.: N/A
9. Solubility: N/A
10. CAS DataBase Reference: 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid(CAS DataBase Reference)
11. NIST Chemistry Reference: 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid(6411-50-3)
12. EPA Substance Registry System: 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid(6411-50-3)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 6411-50-3(Hazardous Substances Data)

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6411-50-3 Usage

Uses

Used in Dye Industry:
5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid is used as a dye in the dye industry for its unique color-changing properties in various solvents and under different conditions. Its ability to produce distinct shades in water, ethanol, and sulfuric acid, as well as its color change upon the addition of caustic, makes it a valuable compound for creating a wide range of colors in textiles, paints, and other applications.
Used in Textile Industry:
In the textile industry, 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid is utilized as a colorant for fabrics. Its various fastness properties, such as ironing fastness, light fastness, fulling, perspiration fastness, and soaping, ensure that the dyed fabrics maintain their color and quality even under harsh conditions, making it suitable for a variety of textile applications.
Used in Paint and Coating Industry:
5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid is employed as a pigment in the paint and coating industry. Its unique color-changing characteristics and various fastness properties make it an ideal choice for creating vibrant and long-lasting colors in paints and coatings for various surfaces.
Used in Analytical Chemistry:
In analytical chemistry, 5-[(3-Carboxy-5-methyl-4-oxo-2,5-cyclohexadien-1-ylidene)(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)methyl]-2-hydroxy-3-methylbenzoic acid can be used as a reagent or indicator due to its color-changing properties in response to different chemical conditions, such as the addition of caustic or changes in pH. This makes it a potentially useful compound for various analytical applications.

Preparation

Formaldehyde?and 2-Hydroxy-3-methylbenzoic acid condensation, then product in the?4-Amino-5-hydroxynaphthalene-1-sulfonic acid with 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one common oxidation.

Standard

Ironing Fastness

Alkali

Acid

ISO

Check Digit Verification of cas no

The CAS Registry Mumber 6411-50-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,1 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 6411-50:
(6*6)+(5*4)+(4*1)+(3*1)+(2*5)+(1*0)=73
73 % 10 = 3
So 6411-50-3 is a valid CAS Registry Number.

InChI:InChI=1/C27H22N2O7/c1-13-9-16(11-19(23(13)30)26(33)34)22(17-10-14(2)24(31)20(12-17)27(35)36)21-15(3)28-29(25(21)32)18-7-5-4-6-8-18/h4-12,21,30H,1-3H3,(H,33,34)(H,35,36)

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