Solvent Blue 35

Basic Information

· Chemical Name: Solvent Blue 35

· CAS Number: 17354-14-2

·IUPAC Name:1,4-Bis(butylamino)-9,10-anthracenedione or 1,4-Di (butylamino) anthraquinone

· Molecular Formula: C₂₂H₂₈N₂O₂

· Appearance: Typically a deep blue powder or crystalline solid.

Key Properties and Uses：

Solvent Blue 35 is an anthraquinone-based dye. Its key characteristics include:

1. Solubility: As indicated by the name "solvent," it is insoluble in water but readily soluble in many organic solvents (e.g., alcohols, esters, aromatic hydrocarbons, ketones), as well as oils and waxes.

2. Strong Tinctorial Strength: It provides a bright, vivid blue color with good lightfastness.

3. Good Thermal Stability: It is resistant to decomposition at elevated temperatures, making it suitable for applications involving heat processing.

Primary Applications:

· Plastics Coloring: Used for coloring engineering plastics such as polystyrene, ABS, polycarbonate, and PMMA (acrylic), as well as some general-purpose plastics.

· Solvent-based Inks: Employed in inks for metal decoration printing, film printing, and other systems requiring organic solvents.

· Aluminum Foil Staining: Used in the printing and dyeing of packaging aluminum foil.

· Consumer Products: Historically or in specific cases, may be used for coloring oils, waxes (e.g., candles, shoe polish). (Note regulatory restrictions).

· Research & Laboratory: Used as a chemical reagent or tracer.

Safety and Health Hazards (Important)

Handling Solvent Blue 35 requires caution due to its potential hazards:

· Acute Toxicity: Safety Data Sheets indicate it can cause skin, eye, and respiratory tract irritation. Inhalation of dust or skin contact may cause discomfort.

· Environmental Hazard: Toxic to aquatic life and may have long-lasting effects in the environment.

· Handling and Storage:

· Use appropriate personal protective equipment (PPE) such as dust masks, chemical safety goggles, gloves, and protective clothing.

· Ensure good ventilation in the workplace to avoid dust formation.

· Store in a cool, dry, well-ventilated place away from ignition sources and heat. Keep separate from oxidizing agents.

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Regulation and Restrictions

Due to its potential health and environmental risks, the use of Solvent Blue 35 is strictly regulated in certain areas:

· In Food Contact Materials: Its use is generally prohibited. Because of potential migration into food, regulations in regions like China, the EU, and the US typically do not permit its use in plastics, inks, or packaging intended for direct food contact.

· In Cosmetics: Solvent Blue 35 is not listed as an approved colorant in the China Cosmetic Safety and Technical Standards or the EU Cosmetics Regulation (EC) No 1223/2009. Therefore, it must not be used in cosmetic products.

· REACH Regulation: Under the EU REACH regulation, it is included in the Candidate List of Substances of Very High Concern (SVHC) primarily due to concerns regarding potential reproductive toxicity. This means products containing it may require notification to the European Chemicals Agency (ECHA), and its use may be subject to future authorization restrictions.

Summary

Solvent Blue 35 is a high-performance, oil-soluble anthraquinone blue dye primarily used in industrial applications like plastics and specialty inks. However, it poses certain health and environmental hazards, with its potential reproductive toxicity being a particular concern highlighted by the EU. Consequently, its modern use is heavily regulated, and it is expressly prohibited in food-contact materials and cosmetics. Safe handling procedures and environmental regulations must be strictly followed in any industrial application.

If you are handling or using this substance, it is essential to consult the most up-to-date official Safety Data Sheet (SDS) and comply with all local laws and regulations.

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