Disodium 8-phenylazo-7-hydroxy-1,3-naphthalenedisulfonate

Identification

Molecular formula

C₁₆H₁₀N₂Na₂O₇S₂

CAS number

3567-65-5

IUPAC name

disodium;7-hydroxy-8-phenylazo-naphthalene-1,3-disulfonate

State

Disodium 8-phenylazo-7-hydroxy-1,3-naphthalenedisulfonate is typically a solid powder at room temperature. It is stable under normal conditions but should be protected from moisture as it is hygroscopic.

Melting point (Celsius)

300.00

Melting point (Kelvin)

573.00

Boiling point (Celsius)

0.00

Boiling point (Kelvin)

0.00

General information

Molecular weight

452.37g/mol

Molar mass

452.3600g/mol

Density

2.1000g/cm³

Appearence

This compound, often used as an azo dye, appears as a red to brown powder. It can also be available in shades of orange or yellow, depending on its hydration state and purity.

Comment on solubility

Solubility of Disodium 7-Hydroxy-8-Phenylazo-Naphthalene-1,3-Disulfonate

Disodium 7-hydroxy-8-phenylazo-naphthalene-1,3-disulfonate, often abbreviated as DNS, exhibits notable solubility characteristics due to its ionic nature. The presence of sulfonate groups within its structure enhances its affinity for polar solvents, especially water. Here are some key points regarding its solubility:

High Water Solubility: Being a disodium salt, this compound is highly soluble in water, which allows it to disperse readily in aqueous solutions.
Influence of pH: The solubility can be influenced by the pH of the solution, as variations can affect the ionization of the sulfonate groups.
Temperature Dependency: Typically, solubility increases with temperature, making the compound more soluble in warmer conditions.
Compatibility: It generally exhibits good compatibility with a variety of other substances, making it useful in various applications.

As solubility plays a crucial role in determining the behavior of compounds in various environments, understanding these factors can provide insights into its applicability in chemical formulations and processes. The solubility of DNS not only facilitates its use in laboratory settings but also broadens its potential in industrial applications, where aqueous solutions are often preferred.

Interesting facts

Interesting Facts About Disodium 7-Hydroxy-8-phenylazo-naphthalene-1,3-disulfonate

Disodium 7-hydroxy-8-phenylazo-naphthalene-1,3-disulfonate, commonly referred to as a dye intermediate, is a fascinating compound in the world of chemistry, particularly within the field of organic materials. Here are some noteworthy points about this vibrant compound:

Colorful Applications: This compound is notorious for its vibrant colors, making it popular in the textile industry for dyeing fabrics.
Structure Matters: The complex structure includes both sulfonate groups and an azo linkage, which contribute to its high stability and strong color properties.
pH Indicator: Given its unique chemical structure, it has potential applications as a pH indicator, changing colors based on the acidity or basicity of the solution.
Environmental Considerations: Like many azo dyes, this compound raises environmental concerns regarding biodegradability, emphasizing the importance of greener alternatives in industrial processes.
Historical Context: Azo compounds have been integral to the development of synthetic dyes since the 19th century, reflecting a significant shift from natural dyes to synthetic methods.

In essence, disodium 7-hydroxy-8-phenylazo-naphthalene-1,3-disulfonate serves as a prime example of how chemistry intersects with daily life through its applications in textiles and other industries. Its significance in both modern applications and environmental discussions makes it a notable compound for study and exploration.

Synonyms

Orange G

1936-15-8

Acid orange 10

C.I. Orange G

C.I. Acid Orange 10

Light Orange G

Acid Orange G

Orange G dye

Orange GG

Acid Orange GG

Colacid Orange G

Dolkwal Orange G

Food Orange GG

Hexacol Orange G

Orange BPC

Orange GMP

Acilan Orange GX

Food Orange 4

Ink Orange JSN

Straight Orange G

Acid Orange 2G

C.I. Food Orange 4

Java Orange 2G

Apocid Orange 2G

Acidal Fast Orange

Standacol Orange G

Crystal Orange 2G

Orange G BPC

Certicol Orange GS

Brasilan Orange 2G

Oranz G [Polish]

Acid Fast Orange G

Fast Acid Orange G

Oranz GG [Czech]

Schultz No. 39

Acid Light Orange G

Acid Light Orange J

Fast Light Orange G

Kiton Fast Orange G

Orange G B.P.C

Acid Lightfast Orange

Acid Orange Lightfast

Amacid Crystal Orange

Erio Fast Orange AS

C.I. 16230

Xylene Fast Orange G

Acid Light Orange SX

Fast Light Orange GA

Acid Fast Orange EGG

Bucacid Fast Orange G

Hidacid Fast Orange G

Orange G (Indicator)

1370 Orange

Cetil Light Orange GG

Duasyn Acid Orange GG

Solar Light Orange GX

D&C Orange No. 3

Eniacid Light Orange G

Intracid Fast Orange G

Acid Leather Orange KG

C.I. Acid Orange No. 10

Fenazo Light Orange 2G

Hidacid Fast Orange 2G

Sulfacid Light Orange J

Neklacid Fast Orange GG

Oranz G

Acid Leather Orange PGW

Hispacid Fast Orange 2G

Neklacid Fast Orange 2G

Oranz GG

Tertracid Light Orange G

C.I. Acid Orange 10, disodium salt

Oranz kysela 10

Vendacid Light Orange 2G

Vondacid Light Orange 2G

D and C Orange No. 3

Fast Light Orange GA-CF

Hexacol Orange GG Crystals

Oranz kysela 10 [Czech]

Naphthalene Fast Orange 2G

NCI-C53838

Atul Acid Crystal Orange G

CI 16230

Unitertracid Light Orange G

Naphthalene Fast Orange 2GS

Acid Light Orange JA Export

Naphthalene Orange Solide GG

Orange G (Biological Stain)

Oranz potravinarska 4

1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(phenylazo)-, disodium salt

CCRIS 881

Neklacid Fast Light Orange GG

Oranz potravinarska 4 [Czech]

Calcocid Fast Light Orange 2G

CHEBI:82427

HSDB 4348

CI 27

EINECS 217-705-6

1Q6EJU80RN

NSC 10450

CI Orange G

DTXSID6021082

Disodium 7-hydroxy-8-phenylazonaphthalene-1,3-disulphonate

ORANGE G [IARC]

CI ORANGE G [IARC]

1-Phenylazo-2-naphthol-6,8-disulfonic acid, disodium salt

1-Phenylazo-2-naphthol-6,8-disulphonic acid, disodium salt

Disodium 7-hydroxy-8-(phenylazo)-1,3-naphthalenedisulfonate

C.I. ORANGE G [HSDB]

2-Hydroxy-1-phenylazo-6,8-naphthalenedisulfonic acid, disodium salt

DTXCID801474349

7-Hydroxy-8-(phenylazo)-1,3-naphthalenedisulfonic acid, disodium salt

7-Hydroxy-8-(phenylazo)-1,3-naphthalenedisulphonic acid, disodium salt

NSC-10450

D&C ORANGE NO. 3 (DELISTED)

ORANGE G (IARC)

7-Hydroxy-8-(phenylazo)-1,3-naphthalenedisulfonic acid disodium salt

C.I. 27

1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-(2-phenyldiazenyl)-, sodium salt (1:2)

CI ORANGE G (IARC)

DISODIUM 7-HYDROXY-8-(PHENYLAZO)-1,3-NAPHTHALENEDISULPHONATE

disodium 7-hydroxy-8-[(E)-phenyldiazenyl]naphthalene-1,3-disulfonate

NSC10450

disodium 7-hydroxy-8-((E)-phenyldiazenyl)naphthalene-1,3-disulfonate

ORANGE GBPC

ACID ORANGE EGG

Fast Light Orange GACF

AMACID LIGHT ORANGE G

SANDOLAN FAST ORANGE E-GL

CI 16230 [INCI]

C.I. Acid Orange 10, disodium salt (8CI)

1Phenylazo2naphthol6,8disulfonic acid, disodium salt

1Phenylazo2naphthol6,8disulphonic acid, disodium salt

Disodium 7hydroxy8(phenylazo)1,3naphthalenedisulfonate

2Hydroxy1phenylazo6,8naphthalenedisulfonic acid, disodium salt

1,3Naphthalenedisulfonic acid, 7hydroxy8(phenylazo), disodium salt

7Hydroxy8(phenylazo)1,3naphthalenedisulfonic acid, disodium salt

7Hydroxy8(phenylazo)1,3naphthalenedisulphonic acid, disodium salt

White mineral oil(petroleum)

Orange 2G

Orange #10

MFCD00012457

ORANGE G SODIUM

Orange G (C.I. 16230)

Orange G, Technical grade

sodium (E)-7-hydroxy-8-(phenyldiazenyl)naphthalene-1,3-disulfonate

1082249-82-8

1-Phenylazo-2-naphthol-6,8-disulfonic acid disodium salt

disodium;7-hydroxy-8-phenyldiazenylnaphthalene-1,3-disulfonate

Sodium 7-hydroxy-8-(phenyldiazenyl)naphthalene-1,3-disulfonate

disodium 7-hydroxy-8-(2-phenyldiazen-1-yl)naphthalene-1,3-disulfonate

disodium 7-hydroxy-8-[(Z)-phenyldiazenyl]naphthalene-1,3-disulfonate

CAS-1936-15-8

ORANGEG

UNII-1Q6EJU80RN

SCHEMBL81967

SCHEMBL340738

CHEMBL410263

Orange G, Electrophoresis Grade

Orange G, for NA electrophoresis

Orange G/blue loading dye (6X)

AEOVEGJBKQQFOP-DDVLFWKVSA-L

Orange G, Dye content >=60 %

Tox21_202154

Tox21_303019

BDBM50177800

AKOS000283092

AKOS015903035

AKOS016372313

AKOS024319578

FO41043

NCGC00164330-01

NCGC00256372-01

NCGC00259703-01

White mineral oil;Paraffin oil;White oil

FM158402

Orange G loading dye (6X), glycerol based

NS00013482

O0093

C19372

D91797

Orange G, certified by the Biological Stain Commission

7-Hydroxy-8-phenylazo-1,3-naphthalenedisulfonic acid disodium salt

Orange G, certified by the Biological Stain Commission, Dye content 80 %