4-((2-chlorophenyl)azo)-3-hydroxy-N-phenylnaphthalene-2-carboxamide
Basic information
- CAS
6410-26-0- Standard SMILES
O=C(Nc1ccccc1)c1cc2ccccc2c(N=Nc2ccccc2Cl)c1O- InChIKey
XNANGTRPTFPPPE-UHFFFAOYSA-N- Molecular formula
- C23H16ClN3O2
- Average molar mass
- 401.8 g/mol
- Monoisotopic mass
- 401.0931045
Names & identifiers
- Preferred name
- 4-((2-chlorophenyl)azo)-3-hydroxy-N-phenylnaphthalene-2-carboxamide
- IUPAC
- 4-[(2-chlorophenyl)diazenyl]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
- English name
- Pigment Red 21
- Molecular formula
- C23H16ClN3O2
- Molecular weight
- 401.85
Names & synonyms
EINECS 229-096-42-Naphthalenecarboxamide, 4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-DTXSID60643292-Naphthalenecarboxamide, 4-(2-(2-chlorophenyl)diazenyl)-3-hydroxy-N-phenyl-2-Naphthalenecarboxamide, 4-((2-chlorophenyl)azo)-3-hydroxy-N-phenyl-4-((2-Chlorophenyl)azo)-3-hydroxy-N-phenylnaphthalene-2-carboxamide4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide2-Naphthalenecarboxamide, 4-[2-(2-chlorophenyl)diazenyl]-3-hydroxy-N-phenyl-RefChem:508976DTXCID2044216229-096-46410-26-0
Show more names
C.I.P.R21dahongfenC.I. 12300yanliaohongdahongfen808808dahongfenSodiumscarletNAPTHOL RED YRpigment red 21
4-((2-Chlorophenyl)diazenyl)-3-hydroxy-N-phenyl-2-naphthamide4-[(2-chlorophenyl)diazenyl]-3-hydroxy-N-phenylnaphthalene-2-carboxamide2-Naphthalenecarboxamide,4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl-4-[2-(2-Chlorophenyl)diazenyl]-3-hydroxy-N-phenyl-2-naphthalenecarboxamideorb2565504SCHEMBL12960410SCHEMBL16323381SCHEMBL21436700
Database identifiers
- CAS
6410-26-0- PubChem CID
- 80854
- DTXSID
DTXSID6064329- EC Number
- 229-096-4
- Nikkaji
- J34.068E
Properties
Computed structural properties
- XLogP
- 6.6
- Topological polar surface area
- 74.1 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 4
- Heavy atoms
- 29
- Formal charge
- 0
- Complexity
- 580
Physicochemical properties
- Boiling point
- 566.1 · 566.1±50.0 °C(Predicted)
- Density
- 1.31 · 1.31
- pka
- 10.63 · 10.63±0.50(Predicted)
- CAS DataBase Reference
- 6410 · 6410-26-0(CAS DataBase Reference)
- EPA Substance Registry System
- 2 · 2-Naphthalenecarboxamide, 4-[(2-chlorophenyl)azo]-3-hydroxy-N-phenyl- (6410-26-0)
- TSCA
- TSCA listed
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
This chemical does not meet GHS hazard criteria for 100% (30 of 30) of all reports.
Not Classified
Aggregated GHS information provided per 30 reports by companies from 1 notifications to the ECHA C&L Inventory.
Hazard information
Hazard Classes and CategoriesNot Classified
Safety data
- tsca
- TSCA listed
Chemistry & industry
Uses & manufacturing
General Manufacturing Information2-Naphthalenecarboxamide, 4-[2-(2-chlorophenyl)diazenyl]-3-hydroxy-N-phenyl-: ACTIVE
Applications
UsesPigment red 21 is a multifunctional dye. Dyes are important tools in biological experiments. They can help researchers observe and analyze cell structures, track biomolecules, evaluate cell functions, distinguish cell types, detect biomolecules, study tissue pathology and monitor microorganisms. Their applications range from basic scientific research to clinical A wide range of diagnostics. Dyes are also widely used in traditional fields such as textile dyeing, as well as in emerging fields such as functional textile processing, food pigments and dye-sensitized solar cells.
Upstream & downstream products
Upstream raw materials
Downstream products
Related reactions
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Compound notes
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