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2-[2-(2-Hydroxy-1-naphthalenyl)diazenyl]-1-naphthalenesulfonic acid

2-[2-(2-Hydroxy-1-naphthalenyl)diazenyl]-1-naphthalenesulfonic acid structure

CAS No:
29128-55-0
Formula:
C20H14N2O4S
Chemical Name:
2-[2-(2-Hydroxy-1-naphthalenyl)diazenyl]-1-naphthalenesulfonic acid
Synonyms:
1-Naphthalenesulfonic acid,2-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-;1-Naphthalenesulfonic acid,2-[(2-hydroxy-1-naphthalenyl)azo]-;1-Naphthalenesulfonic acid,2-(2-hydroxy-1-naphthylazo)-;2-[2-(2-Hydroxy-1-naphthalenyl)diazenyl]-1-naphthalenesulfonic acid;12227-58-6;12237-76-2

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2-[2-(2-Hydroxy-1-naphthalenyl)diazenyl]-1-naphthalenesulfonic acid Basic Attributes

Molecular Weight：

378.4 g/mol

Exact Mass：

378.40

EC Number：

249-459-0

UNII：

KN0SE6H7BI

NSC Number：

16089

DSSTox ID：

DTXSID3067445

Color/Form：

Red

Characteristics

PSA：

108 Å²

Safety Information

Disposal Methods：

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Drug Information

Impurities：

The /FDA/ Commissioner concludes that these colors /D&C Red 10, 11, 12 and 13/ cannot be produced with any reasonable assurance that they will not contain beta-naphthalamine as an impurity

2-[2-(2-Hydroxy-1-naphthalenyl)diazenyl]-1-naphthalenesulfonic acid Use and Manufacturing

Methods of Manufacturing

One of a group of pigments made by combining tobias acid and beta-naphthol. /Lithol red/|Coupling of diazotized 2-amino-1-naphthalene-sulfonic acid with 2-naphthol, followed by salt formation.

Uses

Industrial enamels; toys and dipping enamels; rubber, plastics, etc. /Lithol red/|Used in printing inks and paints, having tinctorial strength; in alkyd resin enamels and lacquers when the solvent fastness is sufficient; rubber, though subject to some migration. Also linoleum, paper coating, emulsion paints, inks for wrapper, wallpaper and foil printing; PVC; U/F, P/F, polystyrene and amino resins and plastics; student grade artists' coloring materials

Production

(1984) 4.02X10+8 g|(1992) 726 kg produced|(1993) 619 kg produced

Formulations：

Dry color, presscake, aqueous dispersions /available/|Avail as sodium, barium, and calcium lithols. /Lithol red/

Manufacturing Info：

1-Naphthalenesulfonic acid, 2-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-: INACTIVE|INSOL NA, BA, CA SALTS OF SOL AZO DYE. /LITHOLS/|/The FDA terminated the/ provisional listing of D&C Red No. 10, D&C Red No. 11, D&C Red No. 12, and D&C Red No. 13 for use in drugs and cosmetics, effective December 13, 1977|Poor resistance to sunlight and weathering; generally good resistance to bleeding and to chemicals. /Lithol red/

Analytic Methods：

AOAC Method 950.60. Analysis of Commercial Synthetic Organic Color Additives. Specifications and applicable methods...appear in 12th edition.

Computed Properties

Molecular Weight:378.4
XLogP3:4.6
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:3
Exact Mass:378.06742811
Monoisotopic Mass:378.06742811
Topological Polar Surface Area:108
Heavy Atom Count:27
Complexity:647
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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Guide of 2-[2-(2-Hydroxy-1-naphthalenyl)diazenyl]-1-naphthalenesulfonic acid

Basic Attributes
Characteristics
Safety Information
Drug Information
Use and Manufacturing
Computed Properties
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