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Carbazole Dioxazine Pigment Violet 23 Warm Reddish Tone Deep Purple-Red

Pigment Violet 23
Redder Tone

Carbazole Dioxazine — Warm Reddish-Violet

A warm-tone carbazole dioxazine violet with a red-leaning masstone, delivering exceptional brilliance, high transparency, and superior weather resistance. The preferred grade for premium decorative coatings, high-end artistic colours, and deep purple-red shades in inks and paints where a warm, rich violet — rather than a cool blue-violet — is required.

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CI Name
Pigment Violet 23
CI Number
51319
Tone
Reddish-Violet
Forms
Powder · Presscake
Heat Stability
Up to 200 °C
Product overview

Specifications

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Why the redder tone — and when to choose it over the bluer tone

Both PV23 grades share the same carbazole dioxazine chemistry and CI number (51319), but differ in the particle size distribution, surface treatment, and crystal habit, which shift the masstone hue toward red or blue. The Redder Tone produces a warm purple-red masstone — ideal for achieving deep burgundy-violet shades in paints and inks. The Bluer Tone reads as a cooler blue-violet — the grade used for white paint optical brightening and neutral violet tints. Choose the Redder Tone when your target shade is a deep, warm purple; choose the Bluer Tone when you need a cooler, blue-leaning violet or toning agent.

Chemical class
Carbazole Dioxazine Violet
Colour Index name
Pigment Violet 23
Colour Index number
CI 51319
CAS number
6358-30-1
Shade tone
Brilliant reddish-violet (warm masstone)
Specific gravity
~1.5–1.6 g/cm³
pH (10% slurry)
6.5 – 8.0
Available forms
Powder · Presscake
Heat stability
Stable up to 200 °C
Lightfastness
ISO 8 (outstanding)
Technical performance

Performance Properties

PropertyStandard / NoteRating
LightfastnessISO 105-B02 — ISO 8
Excellent (5/5)
Heat stabilityUp to 200 °C
Very good (4/5)
Transparency—
Excellent (5/5)
Weather fastnessExterior exposure
Excellent (5/5)
Colour strength / brillianceFull masstone
Excellent (5/5)
Acid resistance—
Very good (4/5)
Alkali resistance—
Very good (4/5)
Migration resistancePlastics / PVC
Very good (4/5)
Tone comparison

PV23 Bluer Tone vs Redder Tone

Both grades share the same chemistry — the key choice is which masstone direction fits your target shade.

PV23 — Bluer Tone

Cool blue-violet masstone. The grade used for white paint optical brightening (0.005–0.05%), neutral violet tints, and process violet in printing inks.

Masstone directionCool blue-violet
Best forWhite toning, inks, plastics
Toning useYes — at trace levels
View Bluer Tone →
PV23 — Redder Tone

Warm red-violet masstone. Chosen for deep purple-red coatings, high-end decorative paints, and artistic colours where a rich, warm violet hue is the target.

Masstone directionWarm reddish-violet
Best forDecorative paints, coatings, art
Toning useBurgundy & purple-red shades
End-use markets

Applications

Decorative Paints & Architectural Coatings

The primary application for the Redder Tone. Delivers brilliant, deep purple-red and burgundy-violet shades in high-end decorative emulsions and architectural coatings for premium interior applications. Outstanding wash resistance and transparency.

Industrial Coatings

Excellent weather fastness (ISO 8) and acid/alkali resistance make this grade suitable for industrial maintenance coatings and architectural exterior finishes where warm violet-purple shades are required with long-term durability.

Artistic Colours

Used in oil paints, watercolours, acrylics, and gouache where the warm reddish dioxazine violet is valued by artists for its transparency and colour strength. A staple pigment in professional-grade artist colour ranges worldwide.

Printing Inks

High-strength reddish-violet for spot colour printing inks where deep purple-red shades are specified. Excellent solvent compatibility in gravure and flexographic ink systems. Used for premium packaging with violet/purple brand colours.

Textiles

Used in binder-based pigment printing for cotton and synthetic fabrics where warm violet-purple shades are required. Excellent lightfastness makes it suitable for fashion and home textiles with prolonged UV exposure requirements.

Plastics & Masterbatch

Suitable for purple masterbatches in polyolefins and PVC at processing temperatures up to 200 °C. Exceptional tinting strength means very low loadings achieve strong, clean violet-purple plastic goods. Verify heat stability for engineering polymers.

Product forms

Available Forms

Dry Powder
Presscake
Custom Grade

Presscake form is preferred for solvent-flush pastes and high-quality ink grinding, giving superior transparency and tinctorial strength versus dry powder. Aqueous dispersion grades available on request for waterborne paint and ink systems.

Compliance

Regulatory Status

REACH Registered

Registered under EU REACH regulation. Full SDS available on request for compliance documentation.

Heavy Metal Free

Contains no lead, cadmium, mercury, or chromium VI. Meets international packaging and environmental directives.

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