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- Naphthol_Red abstract "Naphthol Red (Pigment red 170 or PR170) is an organic pigment extensively used in automotive coatings and painting. It is produced synthetically by converting p-aminobenzamide into the corresponding diazonium compound followed by diazotation with 3-hydroxy-2-naphththoic acid (2-ethoxy)anilide.Synthesis of Pigment red 170In the solid state the hydrazo tautomer forms and several crystal structures exist. In the initial α polymorph the molecules are arranged in a herringbone pattern with extensive hydrogen bonding. The φ polymorph is more dense and more stable and produced industrially by thermal treatment in water at 130°C under pressure. In this phase the molecules are planar and arranged in layers. Extensive hydrogen bonding exists within the layer but between layers the only interactions are Van der Waals forces. Dense crystal structures are preferred for pigments used in coatings because in the event of photochemical decomposition the fragments are locked in place and are able to recombine. Research shows that by replacing the ethoxy group in this compound by a methoxy group the crystal structure is less stable and in the final application and the color fades more easily. By careful selection of substituents it is possible to optimize crystal structure and improve optical properties .".
- Naphthol_Red iupacName "4-(2-(4-carbamoylphenyl)hydrazono)-N-(2-ethoxyphenyl)-3-oxo-3,4-dihydronaphthalene-2-carboxamide".
- Naphthol_Red thumbnail Pigment_Red_170.png?width=300.
- Naphthol_Red wikiPageExternalLink anie.200502468.
- Naphthol_Red wikiPageID "4165624".
- Naphthol_Red wikiPageRevisionID "597245222".
- Naphthol_Red hasPhotoCollection Naphthol_Red.
- Naphthol_Red imagefile "Pigment Red 170.png".
- Naphthol_Red imagesize "150".
- Naphthol_Red iupacname "4".
- Naphthol_Red othernames "C.I. 12475; C.I. Pigment Red 170".
- Naphthol_Red verifiedrevid "442512636".
- Naphthol_Red watchedfields "changed".
- Naphthol_Red subject Category:Organic_pigments.
- Naphthol_Red subject Category:Pigments.
- Naphthol_Red type Abstraction100002137.
- Naphthol_Red type ColoringMaterial114984973.
- Naphthol_Red type Material114580897.
- Naphthol_Red type Matter100020827.
- Naphthol_Red type OrganicPigments.
- Naphthol_Red type Part113809207.
- Naphthol_Red type PhysicalEntity100001930.
- Naphthol_Red type Pigment114989820.
- Naphthol_Red type Pigments.
- Naphthol_Red type Relation100031921.
- Naphthol_Red type Substance100019613.
- Naphthol_Red type ChemicalCompound.
- Naphthol_Red type ChemicalSubstance.
- Naphthol_Red type ChemicalObject.
- Naphthol_Red type Thing.
- Naphthol_Red comment "Naphthol Red (Pigment red 170 or PR170) is an organic pigment extensively used in automotive coatings and painting. It is produced synthetically by converting p-aminobenzamide into the corresponding diazonium compound followed by diazotation with 3-hydroxy-2-naphththoic acid (2-ethoxy)anilide.Synthesis of Pigment red 170In the solid state the hydrazo tautomer forms and several crystal structures exist.".
- Naphthol_Red label "Naphthol Red".
- Naphthol_Red sameAs m.0bmpjl.
- Naphthol_Red sameAs Q15425799.
- Naphthol_Red sameAs Q15425799.
- Naphthol_Red sameAs Naphthol_Red.
- Naphthol_Red wasDerivedFrom Naphthol_Red?oldid=597245222.
- Naphthol_Red depiction Pigment_Red_170.png.
- Naphthol_Red isPrimaryTopicOf Naphthol_Red.