Solvent Blue 35

Solvent Blue 35 is an organic anthraquinone-based solvent dye, widely used for coloring plastics, coatings, printing inks, and synthetic fibers. It is a bright blue powder that is insoluble in water but soluble in many organic solvents such as benzene, toluene, and dichloromethane. Known for its excellent heat resistance, lightfastness, and color strength, Solvent Blue 35 is especially suitable for transparent or translucent plastic applications like PS, PMMA, ABS, and PVC.

TRADE NAME:

Oil Blue 2N,Sudan Blue 670,Fat Blue 35,Roasplast Blue 635NM,Neoplas Blue B,Dayglo Solvent Blue 35,KPSolve Blue IR,Fat Blue B 01

Characteristics and Advantages

Its advantages stem from its unique chemical structure, mainly including:

• ‍Distinct color and high tinting strength: It appears as dark purple powder but dissolves into bright greenish-blue, with an extinction coefficient ≥16000 at 648-652 nm, ensuring vivid coloring with small dosage.
• Excellent heat resistance: It withstands temperatures up to 260-280℃, adapting to high-temperature processing like plastic injection molding.
• Superior light fastness: Rated 7-8 (on the 8-grade scale), it resists fading even under long-term sunlight exposure, suitable for outdoor products.
• Good solubility and anti-migration: Insoluble in water but highly soluble in toluene (86.3 g/L) and dichloromethane (171.3 g/L); low migration ensures color stability in blends.‍

Application:

Solvent Blue 35 versatility covers multiple industrial fields:

• ‍Plastics industry: Coloring ABS, PC, PP, PMMA, and PVC. It’s ideal for transparent plastic products due to its bright shade.
• Coatings and inks: Used in alkyd paints, automotive coatings, and printing inks, providing stable color for both industrial and decorative purposes.
• Petroleum sector: Dyes diesel fuel in France and Croatia to distinguish fuel types, turning light yellow diesel into greenish-blue.

• Other uses: Stains triglycerides in biological tissue sections; colors candles, waxes, and synthetic fibers like polyester.‍

What requirements and precautions apply to different uses?

Plastic coloring

Requirements: Uniform dispersion to avoid color spots; heat stability at 200-260℃ processing temperature .

Precautions: Pre-mix with resin carriers before use; avoid mixing with low-heat-resistance dyes to prevent discoloration.

Coating/ink preparation

Requirements: Complete dissolution in solvents like butyl acetate to ensure coating transparency.

Precautions: Stir thoroughly to prevent agglomeration; test compatibility with formula resins in advance.

Fuel dyeing

Requirements: Stable color without fading due to fuel oxidation .

Precautions: Control dosage (0.01-0.05%) to avoid affecting fuel performance; store away from oxidants .‍

Technical Specifications

• ‍CAS NO: 17354-14-2

• CI.NO: 61554

• Chemical Family: anthraquinone series
• Molecular Formula: C22H26N2O2
• Molecular Weight: 350.45
• Shade: brilliant green blue (NC raw lacquer). Dark blue powder, insoluble in water, but soluble in organic solvent.
• Chemical name: anthraquinone, 1,4-bis (butylamino) anthracene-9,10-dione
• Color: brilliant green light blue (NC lacquer)‍