Acid Black 210: Leather Applications and Buying Checklist

Acid Black 210 is a Colour Index designation, not a complete purchasing specification. For leather colouring, the commercial grade, strength, shade and application guidance must all match the material being processed. A familiar dye name alone does not establish that two suppliers’ products will perform identically.

Start with the leather and the required finish

Tell the supplier the leather type, tannage, processing stage, intended article and target shade. A black for a deeply coloured garment leather may have different approval criteria from a black used in an article where surface appearance and finishing compatibility are the priorities.

Define whether the main concern is penetration, surface shade, levelness or resistance to colour transfer. These need to be evaluated on representative leather, not inferred from the appearance of dry dye powder.

Confirm the commercial grade and Colour Index identity

The current Sardar Chemicals Acid Dyes range lists Leatherol Dark Black S with C.I. Acid Black 210. Ask for the current technical data sheet and confirm the exact product and strength being quoted. This catalogue association is not a statement that every product sold under the same C.I. name is interchangeable.

Acid Black 210 buying checklist

• Identity: commercial name, C.I. designation, grade, strength and batch identification.
• Shade: agreed physical standard and viewing conditions, including the required black undertone.
• Application: suitability for the actual leather and process, with supplier guidance for the quoted grade.
• Performance: the customer’s relevant fastness and colour-transfer tests, with methods and acceptance criteria stated.
• Documentation: current TDS and SDS, sample identification and any requested restricted-substance test evidence.

Approve a representative leather trial

Compare candidate materials using the same substrate and controlled process conditions. Record the material, recipe, water conditions, processing sequence and finishing steps. Review the final dried and finished article as well as the intermediate colour, because later processing can affect appearance and transfer behaviour.

If a trial misses the target, diagnose substrate preparation, process control, grade selection and finishing compatibility before changing dosage. There is no universal dyeing recipe that can be recommended from the C.I. designation alone.

Review claims and batch consistency

Where buyers specify azo-free or other restricted-substance requirements, obtain evidence for the exact commercial product and relevant scope. Read the azo-free dyes documentation checklist. A colour name or product-family claim is not a substitute for the documents required by the buyer.

Retain an approved sample and record the batch used in the trial. For repeat orders, compare the incoming batch with that standard and investigate meaningful shade or processing differences before bulk production.

Frequently asked questions

Can Acid Black 210 be substituted without a trial?

No automatic substitution should be assumed. Confirm the commercial grade, strength and process fit, then obtain approval through the buyer’s normal trial and testing procedure.

What should accompany an enquiry?

Provide the substrate, target shade, intended article, process information, test requirements, estimated quantity and destination requirements.

Does the product name prove compliance?

No. Compliance must be assessed against the applicable requirement and suitable product-specific evidence.

Contact Sardar Chemicals about Acid Black 210 or compare the Acid Dyes range.