Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate

Basic Information

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CAS Number

633-96-5

Molecular Formula

C16H11N2NaO4S

Molecular Weight

350.32 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Fine Chemicals Surfactants Anionic Surfactants

Basic Physical Properties

Melting Point

164 ºC

Density

0.9879

Water Solubility

116 g/L (30 ºC)

Solubility

Solubility Very soluble in water; very slightly soluble in ethanol

SMILES

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[Na+].OC1=C(N=NC2=CC=C(C=C2)S([O-])(=O)=O)C2=CC=CC=C2C=C1

InChI

InChI=1S/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1

InChIKey

CQPFMGBJSMSXLP-UHFFFAOYSA-M

LogP

4.94570

pKa

8.26, 11.4(at 25℃)

Complexity

529

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Storage Conditions

2-8℃

Synonyms & References

English

Orange Ⅱ
C.I. 15510
Orange II sodium salt
4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt
Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate
Acid Orange 7
ORANGE II SODIUM, C.I. NO.15510
OrangeII
4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid,sodium salt
Acid Orange
Biological stain
ORANGE 4
Orange 7
Orange II, certified, pure
Orange II, pure, certified
ORANGE1
orangeiic
orangeya
orangeyz
tropaeolin ooo
Gold Orange
p-(2-Hydroxy-1-naphthylazo)benzenesulfonic Acid Sodium Salt
Tropaeolin OOO-2
Orange II
Acid Orange A
C.I. Acid Orange 7
Orange 2 sodium salt
Acid orange ii
Persian Orange
Fenazo Orange
Colacid Orange

MDL Number

MFCD00011657

Customs Code

3204120000

FAQ

What is Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5)?

Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5) is an organic compound classified as an azo sulfonate. Its chemical formula is C14H10N2O3S. It appears as a yellow solid and is water-soluble. This compound is commonly used as a dye intermediate and exhibits characteristic aromatic and sulfonate functional groups, making it relevant in chemical synthesis and industrial applications.

What are the main uses of Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5)?

Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5) is primarily used in the production of azo dyes and pigments. It serves as a key intermediate in pharmaceuticals, food coloring, and industrial chemical manufacturing. Additionally, it finds applications in research for developing new compounds and in textile dyeing processes due to its chromophoric properties.

Is Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5) safe?

Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5) is generally considered safe when handled according to standard chemical safety protocols. However, it may cause mild skin or eye irritation. Safety data sheets (SDS) recommend using protective equipment such as gloves and goggles. Proper storage is essential to maintain stability and minimize exposure risks.

How should Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5) be stored?

Sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate (CAS: 633-96-5) should be stored in a cool, dry place at 25°C, away from direct light. Keep in a sealed container to prevent moisture absorption. It is stable under normal conditions but should be protected from high humidity and heat to avoid degradation. Always store in a well-ventilated area for safety.