High-Performance Liquid Sulfur Black for Easy & Stable Dyeing

Liquid Sulfur Black is a pre‑reduced, latent color solution for dyeing all types of fibers and blends. It suits dip dyeing, pad dyeing, and jig dyeing processes. Compared to powder sulfur black, it eliminates reduction and dissolution steps, ensuring bright colors, minimal fiber strength loss, stable performance, lower cost, and a shorter dyeing cycle.

Description

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Product selling point introduction

1. Solves Dyeing Pain Points, Widely Applicable to Various Fibers and Processes

This product is suitable for dyeing various fibers and their blends, meeting the needs of various processes such as dip dyeing, pad dyeing, and roll dyeing. Compared to powdered sulfur black, it completely eliminates the complex reduction and dissolution steps, solving common problems such as uneven chemical distribution, color settling, and decreased fiber strength. Whether it's cotton, linen, or blended fabrics, it achieves a full, uniform, and consistent dyeing effect.

2. Core Differentiation: Pre-reduced Liquid Form, Stable, Efficient, and Time-Saving

This product is a pre-reduced leuco solution. Through strict control of the reducing agent dosage and production conditions, it achieves excellent reducing properties, storage stability, and color development performance. Compared to vat and reactive dyes, it has lower costs, shorter dyeing processes, and less time consumption; compared to powdered sulfur black, it has brighter colors, better penetration, smaller color differences, and is easier to control, significantly improving dyeing quality and production efficiency.

3. Why Choose Our Liquid Sulfur Black Instead of Other Brands?

Extremely Simple Operation: Ready to use immediately after opening the container; no on-site reconstitution or dissolution required, avoiding chemical errors and dust pollution, and reducing worker workload.

Stable Quality: Strict process control ensures consistent color development in every batch, excellent reproducibility, and reduced rework waste.

Fiber Friendly: Minimal damage to fiber strength after dyeing, resulting in soft fabrics and higher added value.

Overall Cost Advantage: High dye yield, short processing time, and low energy consumption, making it more economical than vat/reactive dyes.

Flexible Packaging: Available in 200kg plastic drums and 1000L ton containers; suitable for ambient temperature storage and transportation, convenient to use.

Parametric characteristics of products

Physicochemical Parameters

Appearance: Black liquid

pH value: > 11

Ionicity: Nonionic

Solubility: Soluble in water

Process Parameters

Applicable Processes: Immersion dyeing, pad dyeing, roll dyeing

Dyeing Temperature: 90℃

Steam Temperature: 102-104℃, 60 seconds

Oxidation Conditions: 70℃, pH 3-4 (pad dyeing) or pH 4-5 (roll dyeing)

Oxidizing Agent Dosage: Pad dyeing 40g/L / Roll dyeing 2g/L / Immersion dyeing 20-40g/L

Antioxidant M79: Roll dyeing 5-10g/L

Salt: Roll dyeing/Immersion dyeing 5-30g/L

Packaging and Storage

Packaging: 200kg plastic drum / 1000L ton drum

Storage: Room temperature

Knowledge of popular science products

What is this product?

Liquid Sulfur Black is a pre‑reduced, latent color solution. It appears as a black liquid with pH > 11, is non‑ionic, and soluble in water. Compared to powder sulfur black, it requires no complex reduction or dissolution steps. Strict production controls ensure excellent reduction stability, storage life, and color development performance.

This product application?

Liquid Sulfur Black is suitable for dyeing all types of fibers and their blended fabrics. It supports dip dyeing, pad dyeing, and jig dyeing processes. Typical applications include rolling‑steaming (90℃ dyeing, 102‑104℃ steaming), jig dyeing (bath ratio 4:6), and dip dyeing (90℃, 20 minutes). It ensures bright color, low cost, and short dyeing cycles.

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