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Acid Orange 7

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Identification
Molecular formula
C16H10N2Na2O7S2
CAS number
633-96-5
IUPAC name
disodium;5-acetamido-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate
State
State

Acid Orange 7 is typically found as a solid at room temperature, often in the form of a powder. It remains stable under standard conditions.

Melting point (Celsius)
300.00
Melting point (Kelvin)
573.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
452.38g/mol
Molar mass
452.3700g/mol
Density
1.3300g/cm3
Appearence

Acid Orange 7 is an orange to reddish powder, depending on its concentration and form. It is often used as a dye and can impart bright, vivid colors to aqueous solutions.

Comment on solubility

Solubility of Disodium 5-Acetamido-4-Hydroxy-3-Phenylazo-Naphthalene-2,7-Disulfonate

Disodium 5-acetamido-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate is a fascinating compound, particularly noteworthy for its solubility characteristics. As a sulfonated compound, it generally exhibits a high degree of solubility in water, which is attributed to the presence of multiple sulfonate groups that facilitate strong ionic interactions with water molecules.

Key Points on Solubility:

  • Hydrophilicity: The sulfonate groups impart significant hydrophilicity, making the compound readily soluble in polar solvents.
  • pH Effect: Its solubility can be influenced by pH; higher pH may increase the ionization of sulfonate groups, further enhancing solubility.
  • Temperature: Temperature may also play a role; typically, increased temperature enhances solubility for many ionic compounds.
  • Applications: The high solubility in water makes this compound useful in various applications, particularly in biochemical and analytical chemistry as a dye or indicator.

Overall, disodium 5-acetamido-4-hydroxy-3-phenylazo-naphthalene-2,7-disulfonate illustrates the principle that greater ionic character enhances solubility in polar solvents. This property not only highlights the compound’s practical utility but also aligns with fundamental concepts in solubility behavior.

Interesting facts

Interesting Facts about Disodium 5-Acetamido-4-Hydroxy-3-Phenylazo-Naphthalene-2,7-Disulfonate

This compound, commonly known in the field of chemistry as a brilliant dye, serves multiple purposes in various industries. Here are some intriguing facts about this fascinating compound:

  • Dye Properties: It is primarily used as a dye due to its vibrant color, making it a valuable asset in textile manufacturing and food coloring.
  • Biological Applications: The compound has applications in biological research, often used as a marker in fluorescence microscopy, enhancing the visualization of cellular components.
  • Solubility and Stability: Its disodium nature provides excellent solubility in water, which is crucial for its application in liquid products.
  • Environmental Impact: As with many synthetic dyes, environmental concerns have been raised. Researchers are constantly exploring methods to mitigate its impact during production and disposal.
  • Historical Significance: The creation of azo dyes, including this compound, revolutionized the dye industry in the early 20th century, providing more sustainable and vibrant alternatives to natural dyes.

As the world moves towards chemical solutions that are both effective and environmentally friendly, this compound exemplifies the dual nature of synthetic chemicals: their utility balanced against their potential ecological footprint. Understanding such compounds is vital for chemists and students alike as they navigate the complexities of modern chemistry.

In the words of a prominent chemist, "Every compound tells a story of innovation, necessity, and sometimes, caution." This compound is no exception as it embodies the journey of synthetic chemistry.

Synonyms
Acid red 1
3734-67-6
Red 2G
C.I. Acid Red 1
Amido Naphthol Red G
Lissamine Red 2G
Amacid Phloxine
Azo Phloxine
Phloxine G
Acid Bright Red
Acidine Red G
Azo Phloxine GA
Fast Drimson GR
Leather Red G
Phloxine 2G
Acetyl Red G
Acetyl Red J
Acid Phloxine GA
Azo Geranine 2G
Egacid Red G
Erio Floxine 2G
Fenazo Red B
Geranine 2GS
Amacid Phloxine G
Azonaphthol Red J
Kiton Red G
Ariavit Red 2G
Azo Rhodine 2G
Hexacol Red 2G
Hexalan Red 2G
Acetyl Rose 2GL
Acid Brilliant Red
Acid Red GA
Belacid Phloxine G
Azo Geranine 2GA
Erio Floxine 2GN
Kiton Fast Red G
Naphtocard Red 2G
Acid Rose 2GL
Amido Red 2G
Kiton Red 2G
Acid Naftol Red G
Ahcocid Carmine 2G
Ink Red JSN
Acid Red 2G
Acid Fast Red 3G
Bucacid Fast Crimson
Hidacid Fast Crimson
Java Naphtol Red G
Acid Fast Red EGG
Cetil Light Red GG
Hastings Carmine 2G
Pontacyl Carmine 2G
Unitertracid Red 2G
Azo Phloxine GA-CF
Acid Leather Red KG
Calcocid Phloxine 2G
Acilan Naphtol Red G
Atul Acid Geranine G
Cerven 2G [Czech]
Acilan Naphthol Red G
C.I. Acid Red 1, disodium salt
Eniacid Light Red 3G
Amido Naphthol Red GA
Fast Crimson GR
Vondacid Light Red NG
1379 Red
Amido Naphthol Red 2G
Cerven kysela 1
Brilliant Colacid Red G
Acidal Brilliant Red 2G
C.I. Food Red 10
Cerven 2G
Edicol Supra Geranine 2G
Cerven kysela 1 [Czech]
Hispacid Fast Carmoisine G
Naphthazine Rose 2G
Edicol Supra Geranine 2GS
Solar Fast Red 3G
Brilliant Acid Rosamine 2G
Brilliant Acid Red G
Edicol Supra Geranine 2 GS
Ext D and C Red No. 11
Cerven potravinarska 10
Cerven potravinarska 10 [Czech]
CI 18050
NSC 8666
C.I. 18050
EINECS 223-098-9
NSC 47709
AZOGERANINE
DTXSID9044663
Disodium 5-acetylamino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate
2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-(phenylazo)-, disodium salt
CI ACID RED 1
FABRACID RED S 2G
CI FOOD RED 10
INS NO.128
3365R6427R
DTXCID7024663
WATER RED 177614
INS-128
NSC-8666
NSC-47709
CI ACID RED 1, DISODIUM SALT
COLOUR INDEX 18050 ACID RED 1
E 128
E-128
CI (1975) NO. 18050
2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-(2-phenyldiazenyl)-, sodium salt (1:2)
1-NAPHTHOL-3,6-DISULFONIC ACID, 8-ACETAMIDO-2-PHENYLAZO-, DISODIUM SALT
azofloxin
CI 18050 [INCI]
C.I. Acid Red 1, disodium salt (8CI)
benzeneazo-8-acetylamino-1-naphthol-3,6-disulfonic acid, sodium salt
Disodium 5-(acetylamino)-4-hydroxy-3-(phenylazo)-2,7-naphthalenedisulfonat-e
Azophloxine
Amidonaphthol Red
Azophloxin
C. I. Food Red 10
Food Red 10
CHEBI:87464
Sodium 5-acetamido-4-hydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonate
MFCD00003954
2,7-Naphthalenedisulfonic acid,5-(acetylamino)-4-hydroxy-3-(phenylazo)-, disodium salt
disodium;5-acetamido-4-hydroxy-3-phenyldiazenylnaphthalene-2,7-disulfonate
Acid Red 1 (Technical Grade)
AMIDONAPHTHOL RED G
Acid Red 2G (E128)
Pontacyl Carmine
(EZ)-azophloxine
UNII-3365R6427R
DISODIUM RED 2G
Dye content 90-100%
Acid Red 2G (E128) 100 microg/mL in Water
Red 2G, analytical standard
SCHEMBL340610
SCHEMBL2121238
CHEMBL3184732
Acid Red 1, Dye content 60 %
Tox21_301525
Azophloxine, for microscopy (Hist.)
Acid Red 1 (C.I. 18050)
AKOS004901512
AKOS015903321
Disodium 5-(acetylamino)-4-hydroxy-3-(phenylazo)-2,7-naphthalenedisulfonat- e
NCGC00256294-01
DA-70529
FA171874
CAS-3734-67-6
A0585
NS00047331
F71220
Q417819
Q27159644
disodium 5-acetamido-4-hydroxy-3-(2-phenyldiazen-1-yl)naphthalene-2,7-disulfonate
disodium 5-acetamido-4-hydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonate