C.I. Direct Violet 32

HCID 22942

Basic information

CAS
6428-94-0
Standard SMILES
COc1cc(-c2ccc(N=Nc3cc(S(=O)(=O)[O-])c4ccccc4c3O)c(OC)c2)ccc1N=Nc1cc(S(=O)(=O)[O-])c2ccccc2c1N.[Na+].[Na+]
InChIKey
ZLLGFDUCZGNUHR-UHFFFAOYSA-L
Molecular formula
C34H25N5Na2O9S2
Average molar mass
757.7 g/mol
Monoisotopic mass
757.0889083

Overview

C.i. direct violet 32 is a black solid. (NTP, 1992)

Names & identifiers

Preferred name
C.I. Direct Violet 32
IUPAC
disodium;4-amino-3-[[4-[4-[(1-hydroxy-4-sulfonatonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]naphthalene-1-sulfonate
English name
DIRECTVIOLET32
Molecular formula
C34H28N5NaO9S2
Molecular weight
737.73

Names & synonyms

C.I. DIRECT VIOLET 32Direct Violet 326428-94-0CCRIS 4636DTXSID3025205C.I. 241051-Naphthalenesulfonic acid, 4-amino-3-((4'-((1-hydroxy-4-sulfo-2-naphthyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-, disodium salt1-Naphthalenesulfonic acid, 4-amino-3-[2-[4'-[2-(1-hydroxy-4-sulfo-2-naphthalenyl)diazenyl]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]diazenyl]-, sodium salt (1:2)1-Naphthalenesulfonic acid, 4-amino-3-(2-(4'-(2-(1-hydroxy-4-sulfo-2-naphthalenyl)diazenyl)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)diazenyl)-, sodium salt (1:2)RefChem:572319DIAPHTAMINE VIOLET NWDTXCID001507934
Show more names
C.I.24105DIRECTVIOLET32C.I.DIRECTVIOLET32C.I.Direct Violet 32:C.I.241054-Amino-3-[[4'-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-3,3'-dimethoxy-1,1'-biphenyl-4-yl]azo]-1-naphthalenesulfonic acid disodium salt
C.I. Direct Violet 32, disodium saltC.I. DIRECT VIOLET 32 DISODIUM SALT4-AMINO-3-((4'-((1-HYDROXY-4-SULFO-2-NAPHTHALENYL)AZO)-3,3'-DIMETHOXY(1,1'-BIPHENYL)-4-YL)AZO)-1-NAPHTHALENESULFONIC ACID DISODIUM SALT613-564-3XP4MM652HSCI Direct Violet 32UNII-XP4MM652HSSCHEMBL1352715

Database identifiers

CAS
6428-94-0
PubChem CID
22942
DTXSID
DTXSID3025205
UNII
XP4MM652HS
EC Number
613-564-3

Properties

Computed structural properties

Topological polar surface area
245 Ų
Hydrogen bond donors
2
Hydrogen bond acceptors
14
Rotatable bonds
7
Heavy atoms
52

Experimental & physicochemical properties

Solubility1 to 10 mg/mL at 63 °F (NTP, 1992)
Melting Point561 to 572 °F (decomposes) (NTP, 1992)
Physical DescriptionC.i. direct violet 32 is a black solid. (NTP, 1992)

Physicochemical properties

Stability
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
6428 · 6428-94-0
FDA UNII
4 MM652HS · XP4MM652HS
EPA Substance Registry System
32 · C.I. Direct Violet 32 (6428-94-0)

Safety & regulation

Hazard information

Fire HazardsFlash point data for this chemical are not available. It is probably combustible. (NTP, 1992)
Reactive GroupAzo, Diazo, Azido, Hydrazine, and Azide Compounds
Reactivity AlertsExplosive
Reactivity Profile · 1 item

C.I. DIRECT VIOLET 32 is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Air and Water ReactionsAzo dyes can be explosive when suspended in air at specific concentrations. Slightly soluble in water.

Safety & protection

Fire FightingFires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)
First Aid · 1 item

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Nonfire Spill Response · 1 item

SMALL SPILLS AND LEAKAGE: If you spill this chemical, you should dampen the solid spill material with water, then transfer the dampened material to a suitable container. Use absorbent paper dampened with water to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Wash all contaminated surfaces with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

Personal Protective Equipment (PPE) · 1 item

RECOMMENDED RESPIRATOR: Where the neat test chemical is weighed and diluted, wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter. (NTP, 1992)

Chemistry & industry

Applications

General DescriptionBlack solid.

Preparation methods

Preparation3,3′-Dimethoxylbenzidine double nitriding, respectively with the 4-Hydroxynaphthalene-1-sulfonic acid and 4-Aminonaphthalene-1-sulfonic acid matches.

Upstream & downstream products

Related reactions

0 records

No reaction records under the current filter.

Compound notes

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