Acid Brown 58: Shade Selection and Quality Checks

Acid Brown 58 should be selected against a shade standard and an application requirement, rather than by its name alone. Brown shades can vary in undertone and depth, and the final result depends on the substrate, commercial grade and processing conditions.

Confirm the Acid Brown 58 grade being offered

The current Acid Dyes catalogue lists Leatherol Brown 1288 alongside C.I. Acid Brown 58. Request the current product documents and confirm the exact commercial name, strength and batch. Do not assume that another material bearing the same C.I. designation will behave identically in an existing recipe.

Define the brown shade before comparing samples

Use an agreed physical reference or approved lab sample. Describe the required undertone, depth and permitted variation. Compare samples under the viewing conditions used by the buyer; a match in one lighting condition may not be an adequate approval for the end use.

Where the brown is part of a combination shade, evaluate the complete recipe. Individual colourants can respond differently to process changes, so a successful single-dye trial does not necessarily approve the production mixture.

Match selection to the substrate

For leather, state the leather type, tannage, processing stage and intended finish. For other proposed substrates, obtain explicit grade-specific guidance rather than assuming that an acid-dye family description establishes suitability for every material.

The supplier needs to understand what the buyer is trying to achieve: uniform surface shade, penetration, repeatability after finishing, or a particular end-use test. Agree those priorities before accepting a recommendation.

Quality checks for an approval trial

1. Record the product name, strength, batch and sample source.
2. Use representative substrate and controlled preparation and processing conditions.
3. Assess shade, uniformity and relevant application behaviour.
4. Check the finished article against the customer’s specified test methods.
5. Retain the approved sample and trial record for later batch comparisons.

Follow the current technical data sheet for the selected commercial grade. This guide does not prescribe a universal pH, dosage, temperature or processing time.

Documents to request with Acid Brown 58

• Current technical data sheet and safety data sheet.
• Commercial grade and strength information, plus batch traceability.
• Relevant sample or shade reference.
• Supporting restricted-substance information where the buyer requires it.
• Written clarification of any technical or compliance statement included in the quotation.

For restricted-substance purchasing, review the azo-free dyes buyer guide. A broad claim should not replace a check of the exact requirement and evidence.

Frequently asked questions

Does the same name guarantee the same shade?

No. Commercial strength, formulation, batch and application conditions must be considered. Approve the quoted material against an agreed standard.

How should a repeat order be checked?

Compare it with the retained approved sample and the relevant processing and test records. Investigate a meaningful difference before releasing the material to bulk use.

What information helps a supplier recommend a grade?

Provide substrate details, the shade standard, intended finish, equipment or process constraints, required tests and estimated quantity.

Send an Acid Brown 58 technical enquiry or compare Acid Black 210 selection considerations.