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Disperse Orange 37

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Identification
Molecular formula
C24H16N4O6
CAS number
12223-33-5
IUPAC name
3-hydroxy-4-(2-methoxy-5-nitro-phenyl)azo-N-(3-nitrophenyl)naphthalene-2-carboxamide
State
State

Disperse Orange 37 is typically a solid at room temperature, generally encountered in the form of a powder for its usage in various applications, especially in the dyeing industry.

Melting point (Celsius)
215.00
Melting point (Kelvin)
488.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
436.37g/mol
Molar mass
436.3650g/mol
Density
1.4432g/cm3
Appearence

Disperse Orange 37 appears as an orange powder. It is used as a synthetic dye and is well-regarded for its vivid orange coloration. The commercial product often includes impurities that could slightly alter its precise hue.

Comment on solubility

Solubility of 3-hydroxy-4-(2-methoxy-5-nitro-phenyl)azo-N-(3-nitrophenyl)naphthalene-2-carboxamide

The solubility of 3-hydroxy-4-(2-methoxy-5-nitro-phenyl)azo-N-(3-nitrophenyl)naphthalene-2-carboxamide is influenced by its complex molecular structure, which encompasses both hydrophilic and hydrophobic characteristics. As a result, its solubility can vary significantly depending on the solvent used:

  • In polar solvents: This compound tends to exhibit improved solubility. The presence of hydroxyl (-OH) and carboxamide (-CONH2) groups enhances its affinity for polar solvents.
  • In non-polar solvents: Solubility tends to be limited due to the presence of bulky aromatic groups, which typically do not interact favorably with non-polar environments.
  • In water: Given its dual nature, it may show limited solubility, potentially leading to a heterogeneous mixture rather than a true solution.

As noted in various studies, "the solubility of azo compounds is a critical factor influencing their application in dyes and pigments." This statement underlines how crucial understanding solubility is for practical applications. Additionally, the solubility may also be affected by:

  • Temperature: Increased temperatures may enhance solubility in some solvents.
  • pH levels: Changes in pH can alter the ionization state of functional groups, influencing solubility behavior.
  • Presence of salts or other solutes: These can significantly impact the solubility through various mechanisms, such as ionic strength or competitive solvation.

In conclusion, the solubility of 3-hydroxy-4-(2-methoxy-5-nitro-phenyl)azo-N-(3-nitrophenyl)naphthalene-2-carboxamide remains a multifaceted topic that requires careful consideration of the solvent environment and molecular characteristics.

Interesting facts

Interesting Facts about 3-Hydroxy-4-(2-methoxy-5-nitro-phenyl)azo-N-(3-nitrophenyl)naphthalene-2-carboxamide

This compound, with its complex structure, showcases the intriguing world of azo dyes, which are known for their vivid colors and usage in various applications. Below are some fascinating aspects of this compound:

  • Azo Dyes: This compound belongs to a class of compounds called azo dyes, characterized by the presence of the -N=N- (azo) bond. These dyes are essential in the textile industry due to their ability to impart vibrant colors.
  • Functional Groups: With multiple functional groups including hydroxyl, nitro, and carboxamide, this compound exhibits a remarkable reactivity profile, making it useful in various chemical reactions.
  • Coloration Mechanism: The vivid colors of azo compounds result from their electronic structure, which allows for extensive conjugation. This leads to an absorption of visible light, producing the colorful appearance.
  • Biological Activity: Compounds of this nature are often studied for their potential biological activities, including antibacterial and anticancer properties, making them significant in pharmaceutical research.
  • Synthetic Versatility: The synthesis of this compound requires a series of intricate chemical reactions, showcasing the ingenuity required in designing aromatic systems with specific substituents for desired properties.

In the words of renowned chemist Linus Pauling, "the best way to have a good idea is to have a lot of ideas," which perfectly encapsulates the creativity involved in exploring such complex compounds. The field of azo dyes continues to be an area of rich scientific investigation, with potential for innovation and discovery.

Synonyms
6471-49-4
Carnation Red Toner B
Rubescence Red MT-21
Calcotone Red 3B
Alkali Resistant Red Dark
Congo Red R-138
Sanyo Fast Red 10B
Fenalac Red FKB Extra
Textile Red WD-263
Malta Red X 2284
Segnale Light Rubine RG
Red 23
NCI-C60377
Naphthol Red Deep 10459
Sapona Red Lake RL-6280
Naphthol Red B 20-7575
CCRIS 4896
Unisperse Red RBS-PI
HSDB 4356
CI 12355
Naphthol Red D Toner 35-6001
C.I. 12355
EINECS 229-313-2
1-(2-Methoxy-5-nitrophenylazo)-2-hydroxy-3-(3-nitrophenylcarbamoyl)naphthalene
082H78U257
DTXSID3021227
2-Naphthanilide, 3-hydroxy-4-((2-methoxy-5-nitrophenyl)azo)-3'-nitro-
3-Hydroxy-4-((2-methoxy-5-nitrophenyl)azo)-3'-nitro-2-naphthanilide
2-Naphthalenecarboxamide, 3-hydroxy-4-((2-methoxy-5-nitrophenyl)azo)-N-(3-nitrophenyl)-
2-Napthalenecarboxamide, 3-hydroxy-4-((2-methoxy-5-nitrophenyl)azo)-N-(3-nitrophenyl)-
3-Hydroxy-4-((2-methoxy-5-nitrophenyl)azo)-N-(3-nitrophenyl)naphthalene-2-carboxamide
calcotone 3b
2-Naphthalenecarboxamide, 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)-
3-Hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)naphthalene-2-carboxamide
2-Naphthalenecarboxamide, 3-hydroxy-4-(2-(2-methoxy-5-nitrophenyl)diazenyl)-N-(3-nitrophenyl)-
conso red r-138
2-NAPHTHANILIDE, 3-HYDROXY-4-[(2-METHOXY-5-NITROPHENYL)AZO]-3'-NITRO-
2-Naphthalenecarboxamide, 3-hydroxy-4-[2-(2-methoxy-5-nitrophenyl)diazenyl]-N-(3-nitrophenyl)-
Congo Red R138
Rubescence Red MT21
Textile Red WD263
IRGALITE RED RBS
Sapona Red Lake RL6280
CONGO RED R 138
Naphthol Red B 207575
RUBESCENCE RED MT 21
TEXTILE RED WD 263
SYMULER FAST RED 4015
DTXCID40809933
Naphthol Red D Toner 356001
SAPONA RED LAKE RL 6280
3040 RED
3-hydroxy-4-((2-methoxy-5-nitrophenyl)azo)-N-(3-nitrophenyl)-2-naphthalene carboxamide
3Hydroxy4((2methoxy5nitrophenyl)azo)3'nitro2naphthanilide
2Naphthanilide, 3hydroxy4((2methoxy5nitrophenyl)azo)3'nitro
1(2Methoxy5nitrophenylazo)2hydroxy3(3nitrophenylcarbamoyl)naphthalene
2Napthalenecarboxamide, 3hydroxy4((2methoxy5nitrophenyl)azo)N(3nitrophenyl)
2-Naphthalenecarboxamide, 3-hydroxy-4-(2-methoxy-5-nitrophenyl)azo-N-(3-nitrophenyl)-
naphthol red b
2-Naphthalenecarboxamide,3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)-
3-hydroxy-4-[(2-methoxy-5-nitrophenyl)diazenyl]-N-(3-nitrophenyl)naphthalene-2-carboxamide
Pigment Red 23 (tech grade)
3-hydroxy-4-{(E)-[2-(methyloxy)-5-nitrophenyl]diazenyl}-N-(3-nitrophenyl)naphthalene-2-carboxamide
UNII-082H78U257
2-Naphthalenecarboxamide, 3-hydroxy-4-[2-(2-methoxy-5-nitrophenyl)diazenyl]-N-(3-nitrophenyl)-; 2-Naphthalenecarboxamide, 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-N-(3-nitrophenyl)- (9CI); 2-Naphthanilide, 3-hydroxy-4-[(2-methoxy-5-nitrophenyl)azo]-3'-n
Pigment Red 23 - Technical
SCHEMBL5421220
SCHEMBL16323799
RUFMGIMUBZLQQF-HPNDGRJYSA-N
SOFRHZUTPGJWAM-UHFFFAOYSA-N
HY-D0441
MFCD00071991
AKOS025310990
FP33918
C.I.Pigment Red 23 (C.I.12355)
CS-0010493
NS00020534
Q27236350
1-(2-METHOXY-5-NITROPHENYLAZO)-2-HYDROXY-3-(3- NITROPHENYLCARBAMOYL)NAPHTHALENE
3-HYDROXY-4-((2-METHOXY-5-NITROPHENYL)AZO)-3'-NITRO-2- NAPHTHANILIDE
2-NAPHTHALENECARBOXAMIDE, 3-HYDROXY-4-((2-METHOXY-5- NITROPHENYL)AZO)-N-(3-NITROPHENYL)-
3-HYDROXY-4-((2-METHOXY-5-NITROPHENYL)AZO)-N-(3- NITROPHENYL)NAPHTHALENE-2-CARBOXAMIDE