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Acid Violet 54

Acid Violet 54 appearance is red powder. It is blue in concentrated sulfuric acid, turns into magenta after dilution, and precipitates; it is orange in concentrated nitric acid. The aqueous solution is magenta, and there is no change in hydrochloric acid or sodium hydroxide.

TRADE NAME:Weak acid red 10B,Best Acid Red 10B,Acid Violet,Akacid Red IOB 140%,Lerui Acid Violet 1OB,Orco Milling BrilliantRed 10B,Polar Red 10B,Weak Acid Violet 10B

Key features

  • Bright violet to bluish-violet shade with high tinting strength
  • Good levelling properties for uniform shades on protein fibres
  • Suitable for wool, silk and nylon; compatible with standard acid dyeing processes
  • Reasonable washfastness and rubfastness on properly pretreated protein fibres
  • Good compatibility with common acid dye leveling and leveling-accelerating auxiliaries
  • Easy to disperse and soluble in warm water; stable in normal storage conditions

Technical Specifications

  • ‍CAS NO: 11097-74-8
  • CI.NO: Acid Violet 54
  • Molecular Formula: C37H29N3Na2O11S3
  • Molecular Weight: 833.82
  • Shade:Red light purple red‍

Standard

Fiber

Soaping

Persperation Fastness

Oxygen bleaching

Light
Fastness

Fading

Stain

AATCC

Wool

4

4-5

4-5

4

ISO

Wool

4-5

5

4-5

5

4-5

 

Application Features

Leveling(grade)

Displacement

Whitening

Solubility(g/L)

Metal ion effect(grade)

copper

iron

chromium

3

D

well

100(90℃)

4

4

5

Colour Fastness Test

Test Methods

fiber

Alkali resistance

Carbonization

steaming

Chlorination discoloration

Oxygen bleaching

Alkali fluff

Acid shrinkage

Seawater discoloration

Soaping

Perspiration

Sun exposure

discolor

Staining

discolor

Staining

AATCC

wool

5

5

5

4~5

4~5

4~5

4

ISO

wool

3~4

5

4~5

4~5

5

4~5

4~5

5

4~5

5

5

4~5

4~5

Application:

Mainly used for wool, tops, wool/stick blended fabric, polyamide fiber and its silk products dyeing and printing directly, also can used for leather color.

Acid Violet 54 Use condition:

  • ‍1. Mainly used for dyeing and direct printing of wool, tops, wool-blend fabrics, nylon and silk products, and also for leather coloring.
  • 2. Wool dyeing should be carried out in a neutral or weakly acidic bath. The pH of the dyeing solution is 5-7, and the highest dyeing temperature is 80-95 °C. Silk staining should be carried out under weakly acidic or neutral conditions.
  • 3. Blending of blended fabrics: When the wool is dyed with various fibers in the same bath, the apparent color depth of the nylon is close to that of the wool, the silk is lighter, the polyester and triacetate fibers are stained, and the diacetate fibers are not stained. When the substance is used, it can be dyed under the neutral condition in the same bath as the direct dye, and after fixing, fix the color with a fixing agent to improve the wet processing fastness.
  • 4. Weak acid brilliant red 10B Wet handling fastness and fluff resistance are good, the color is bright and blue, similar to Qinglian, the strength is higher, the light color has poor light fastness, suitable for dyeing dark color, dyeing Light colors are generally replaced with other dyes.

FAQ

What types of fibres give the best fastness with Acid Violet 54?

Protein fibres (wool and silk) and nylon typically give the best overall fastness. On these fibres you will normally see stronger wash and rub fastness versus cellulose fibres — for cellulose you should use a substantive or vat dye instead. Always run a lab batch to confirm fastness targets for your substrate and finishing process.

What is a practical starting recipe for lab trials?

As a starting point for wool: 0.5–1.5% owf (on-weight-of-fibre) with an acid pH (around pH 4.0–5.0), raise temperature gradually to 85–95°C and hold for 30–45 minutes depending on liquor ratio. For nylon, lower temperature and shorter dwell may be sufficient. These are starting guidelines — always optimize on your equipment and with your auxiliaries.

How does pH affect shade and exhaustion?

Acid dyes like Acid Violet 54 bind to fibres by ionic interaction; lower (acid) pH increases protonation of fibre sites and usually improves exhaustion and darker shades. If pH becomes too low it can accelerate hydrolysis on sensitive substrates — follow lab trials to find the optimum pH for shade and fastness.

Can Acid Violet 54 be used with leveling agents or leveling dyes?

Yes. Standard leveling auxiliaries and leveling acid dyes are generally compatible, and can improve uniformity on larger lots or difficult-to-level substrates. Compatibility tests are advised because leveling agents can slightly alter final shade and uptake rate.

What are the main limits on lightfastness and wet-fastness?

Acid violet shades commonly show moderate to good wash and rub fastness on protein fibres when properly fixed and finished; lightfastness is commonly moderate — for outdoor or high-light applications consider mixing with more lightfast pigments or selecting specialised lightfast dyes. Always request the technical datasheet for measured fastness grades.

Is Acid Violet 54 safe for food-contact or toy applications?

No — this product is an industrial textile/leather dye and is not intended for food contact, toys, medical implants or drinking-water applications. For regulated applications consult regulatory documents and approved dye lists for your target market.

How should I test a production run to match lab results?

Scale up in at least two pilot runs, keep liquor ratio, pH profile, temperature ramp and dwell consistent with the lab recipe, and use the same auxiliaries and water hardness. Measure shade (spectrophotometer) and evaluate fastness (wash, rub, light) under the same standardized conditions used in your lab tests.

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