Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate

Basic Information

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CAS Number

2783-94-0

Molecular Formula

C16H10N2Na2O7S2

Molecular Weight

452.37 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

Physical State

Yellow powder

Melting Point

>300 °C

Boiling Point

162.4°C

Density

1.0000

Water Solubility

5-10 g/100 mL at 24 ºC

Solubility

Soluble in water, ethanol

SMILES

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c1cc(ccc1N=Nc2c3ccc(cc3ccc2O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

InChI

InChI=1S/C16H12N2O7S2.2Na/c19-15-8-1-10-9-13(27(23,24)25)6-7-14(10)16(15)18-17-11-2-4-12(5-3-11)26(20,21)22;;/h1-9,19H,(H,20,21,22)(H,23,24,25);;/q;2*+1/p-2

InChIKey

OIQPTROHQCGFEF-UHFFFAOYSA-L

LogP

4.93060

Complexity

722

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℃

Stability

Stable. Combustible. Incompatible with strong oxidizing agents.

Toxicity

LD50 in rats, mice (g/kg): >10, >6 orally (Gaunt, 1967)

Synonyms & References

English

sunset yellow fcf
Food yellow No.5
Gelborange S
Fodd yellow No.5
FD & C Yellow 6
Food Yellow 3
Sunset Yellow FCF (E 110)
Sunset Yellow FCF solution
SUNSET YELLOW FCF, C.I. 15985
6-hydroxy-5-(4-sulfophenylazo)-2-naphthalenesulfonic acid disodium salt
C.I. 15985
E110
e110[dye]
FD and C Yellow No. 6
FDC yellow no. 6
KI5
Orange yellow S
orangeiir
orangepal
Sunset Yellow
YELLOW 6
yellowno6
yellows
YELLOWSY
FD&C Yellow No. 6
Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate
C.I. Food Yellow 3
FD&C Yellow 6
SUN Yellow
Food Yellow 3:1
Twilight Yellow

MDL Number

MFCD00036437

FAQ

What is Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0)?

Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0) is a sodium salt of an azo compound, characterized by its chemical structure containing a naphthalene ring with sulfonate and hydroxyl groups. It is a yellowish solid, soluble in water, and commonly used as a dye or pigment in industrial applications. Its molecular formula is C15H11N2Na2O7S2, and it exhibits strong absorption properties in the visible spectrum, making it valuable in analytical chemistry.

What are the main uses of Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0)?

Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0) is primarily used in the dye industry as a pH indicator and in the synthesis of other azo compounds. It also finds applications in pharmaceuticals for its chromophore properties, in research for spectroscopic analysis, and in some food-related processes as a coloring agent. Its chemical structure makes it suitable for use in analytical and industrial settings requiring colorimetric detection.

Is Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0) safe?

Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0) is generally considered safe when handled properly. However, it may cause mild skin or eye irritation upon contact. Safety precautions include wearing protective gloves, goggles, and ensuring adequate ventilation. It complies with standard safety regulations for chemical handling and is not classified as toxic under normal usage conditions.

How should Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0) be stored?

Disodium 6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]-2-naphthalenesulfonate (CAS: 2783-94-0) should be stored in a cool, dry place away from light. It is stable under normal storage conditions but may degrade if exposed to moisture or high temperatures. Keep in airtight containers to prevent contamination and ensure long-term preservation of its chemical properties.