Direct Brown 210

Direct Brown 210 is a water-soluble direct (substantive) azo dye used primarily for dyeing and printing cellulose fibers such as cotton, viscose and paper. It produces a brown to dark-red brown shade with good tinting strength and is supplied as a brown powder suitable for pad, exhaust and printing processes.

TRADE NAME:Direct Fast Brown GTL,C.I.Direct Brown210,Kayarus Supra Brown GTL

Key Features

• Type: direct (substantive) azo dye for cellulose fibers.
• Solubility: water-soluble (suitable for aqueous dyeing and printing).
• Typical fastness: moderate to good washing and rubbing fastness; light fastness varies by source/product grade.
• Typical purity / dye content: commercial lots commonly >98% dye content (technical grades vary).
• Typical packaging: 25 kg drums / cartons (industrial packaging).

Direct Brown 210 Application:

Apply to the cellulose fiber dyeing and printing.

Technical Specifications

• ‍CAS NO: 2429-82-5
• CI.NO: 22311
• Molecular Formula: C29H19N5Na2O7S
• Shade: Brown.‍

FAQ

What fibres is Direct Brown 210 best for?

It’s formulated mainly for cellulose fibres (cotton, viscose/rayon) and is commonly used in textile dyeing and paper/leather colouring; not the first choice for untreated polyester.

How are its wash and light fastness?

Supplier TDS typically reports washing fastness around 2–3 and lightfastness about 2; wet rubbing ~3 and dry rubbing ~4 — use after-treatment (soaping, fixing agents) to improve performance.

What processing conditions give best shade repeatability?

Follow the supplier TDS: controlled liquor ratio, thorough wetting, correct temperature profile and standard soaping. For deep shades use high-temperature/direct exhaustion methods per TDS.

Do I need special safety or storage measures?

Store dry in closed containers, avoid inhalation of powder, and follow the product MSDS for PPE and waste/disposal instructions.