FULL SHADEP.R.23
TINT
Digital color reference · physical approval required
ORGANIC PIGMENTS
Pigment Red 23
Pigment Red 23 is a Naphthol AS pigment giving a comparatively dull bluish-red shade. It is used in printing inks and pigment textile printing. Light and solvent fastness should be checked against the application requirements rather than presenting this grade as a high-durability red.
- Color Index / grade
- P.R.23
- CAS
- 6471-49-4
- Chemical family
- Naphthol AS pigment
- Published heat resistance
- 150 °C
- Light fastness
- 4 / 8
Typical application scopeCoatings & paint · Printing inks · Textiles & fibers
PRODUCT PROFILE
P.R.23Pigment Red 23 — grade profile
Pigment Red 23 (P.R.23) is a naphthol as pigment for Coatings & paint, Printing inks and Textiles & fibers. Compare shade, tinting strength, dispersion and processing stability in the customer’s actual resin or binder rather than relying on one universal value.
Published screening data includes published heat reference 150 °C, light fastness 4/8 and oil absorption 35–45 ml/100g. Application-specific heat and fastness entries in the technical table take precedence.
Primary listed fits include Water-based decorative coatings, Pigment textile printing and Water-based inks; Industrial coatings, Offset inks and NC inks are listed for evaluation.
Selection focus
At equal loading, compare shade, tinting strength, dispersion and resin or binder compatibility, then confirm the required fastness under the final process conditions.
REFERENCE SHADE
Full shade and tint
Dull bluish red
Full shade
Tint / reduction
Manufacturer-published shade descriptions were used to correct the color direction. Screen colors remain visual references, not batch standards; approve a physical drawdown or molded plaque under agreed test conditions.
TECHNICAL DATA
Published specifications
Only identified or numerical fields supported by public registry and product-table data are shown. Unpublished values are omitted.
ParameterPublished value
Product namePigment Red 23
Color Index / product gradeP.R.23
Colorant categoryOrganic pigments
CAS number6471-49-4
Molecular formulaC24H17N5O7
Chemical familyNaphthol AS pigment
Physical appearanceColored powder
Light fastness4 / 8
Acid resistance5 / 5
Alkali resistance3 / 5
Oil absorption35–45 ml/100g
Performance values are catalogue references. The current grade TDS, test conditions and agreed batch COA govern product approval.
APPLICATION CHART
Recommended systems at a glance
Application areaRecommendedEvaluate
Coatings & paint
Water-based decorative coatingsPigment textile printing
Industrial coatings
Printing inks
Water-based inks
Offset inksNC inks
Textiles & fibers
Pigment textile printing
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Application listings support initial selection and still require validation in the customer's resin, binder, process and end-use conditions.