Product Characteristics: Papermaking Special Liquid Red R is an economical, greenish-blue, liquid anionic direct dye, primarily used for dyeing paper and kraft paper. 

Product Type: Anionic azo dye 

Advantages:

● Liquid dye that is easy to apply and handle. 

● Brown-black hue. 

● Easily bonds with fibers.  

● Complies with EU dye regulations. 

● Particularly suitable for dyeing recycled pulp. 

Technical Specifications

Appearance: Blue-black liquid 

Ionic Nature: Anionic 

Fastness: Higher fastness compared to similar dyes. 

Strength: 100±3 (relative to standard) 

Viscosity: ≤50 mPa·s (20°C)

Density: 1.05–1.20 g/cm3 

pH Value: 8.5–10.0

Solubility: Miscible with water in any proportion 

Storage Requirements  

This product has high storage stability; however, if stored below freezing for extended periods, it may solidify. Returning to room temperature or heating will restore its original state without any adverse effects on performance.

Application Characteristics

This product is miscible with water in any proportion and is mainly used for dyeing kraft linerboard. It exhibits high affinity for fibers with high lignin content, such as mechanical pulp, recycled pulp, and unbleached chemical pulp, resulting in excellent dyeing effects. Compared to similar products, it offers higher light fastness. 

Packaging

Standard packaging: 25 kg/drum (plastic drum), 1100 kg/drum (plastic drum)  Custom packaging is available based on customer requirements. 

Safety

Tests indicate that when used as recommended and in compliance with relevant labor protection regulations, this product poses no harm to human health. 

Special Statement

The technical information provided by our company is based on our current understanding of the product. Users should conduct tests to verify the suitability of the supplied product for their intended processes and applications. Many factors can influence the dyeing process, and users are advised not to use the product without prior testing.