Toluene Methylbenzene CAS 108-88-3

Reactions

Electrophilic Aromatic Substitution: Due to the electron-donating effect of the methyl group (activating group), hydrogen atoms on the benzene ring are readily substituted by halogens, nitro groups, or sulfonic acid groups, primarily yielding ortho- and para-isomer.

Side-Chain Oxidation: In the presence of catalysts or strong oxidizing agents, the methyl group on the side chain can be progressively oxidized to benzaldehyde or benzoic acid.

Hydrogenation: Under heating and pressure in the presence of catalysts (such as nickel or platinum), toluene reacts with hydrogen to form methylcyclohexane.

Specifications

Applications

• Coatings, Paints, and Ink Solvents: Used as an excellent organic solvent for dissolving resins, alkyd resins, nitrocellulose, and various printing inks. Function: Adjusts system viscosity, optimizes fluidity, and evaporates rapidly after application to ensure a smooth and uniform coating film.
• Organic Synthesis Intermediates: Widely used in the production of benzoic acid, benzaldehyde, benzyl chloride, dyes, and TDI (toluene diisocyanate, core raw material for polyurethane). Function: Provides a highly reactive aromatic hydrocarbon skeleton as a foundational raw material for synthesizing complex fine chemicals.
• Adhesives and Cleaning Agents: Applied in footwear manufacturing, rubber processing, and degreasing/surface cleaning of metal components. Function: Rapidly strips and removes surface oils, waxes, and residual colloids through strong penetration and dissolving power.
• Gasoline Additive: Used as a high-octane blending component in the petroleum refining industry. Function: Enhances gasoline knock resistance and improves engine combustion efficiency.

Storage Environment Requirements

• Warehouse Conditions: Store in a cool, dry, and well-ventilated specialized hazardous materials warehouse, away from fire and heat sources.
• Temperature Control: Recommended storage temperature below $30^\circ\text{C}$, avoiding direct sunlight.
• Container Management: Keep containers tightly sealed; packaging containers must be inspected regularly for leaks and deformation.
• Storage Incompatibilities: Store separately from oxidizing agents, acids, halogens, etc.; mixed storage is strictly prohibited. Warehouses should be equipped with explosion-proof lighting and ventilation facilities.

Handling & Precautions

• Closed Operations & Ventilation: Production and application workshops must maintain good mechanical exhaust ventilation to prevent vapors from leaking into the air.
• Personal Protection:
  • Respiratory System: Self-priming filter respirators (half-mask) must be worn when airborne concentrations exceed limits.
  • Eyes & Skin: Wear chemical safety goggles, anti-static protective workwear, and oil-resistant rubber gloves.
• Fire & Explosion Prevention: Smoking is strictly prohibited. Iron tools that may generate sparks are forbidden in the work area. Transmission and filling pipelines/equipment must have reliable grounding devices to prevent static electricity accumulation.

Formulations

Formulation 1: Polyurethane Wood Paint Thinner

• Composition: Toluene (40%) + Butyl Acetate (30%) + Xylene (20%) + Cyclohexanone (10%)
• Function: Toluene acts as the primary core solvent providing rapid dissolution rate, while multi-component synergy adjusts the overall volatilization gradient (balancing fast, medium, and slow drying) to effectively prevent coating defects such as blushing, pinholes, or sagging.

Formulation 2: Industrial Metal Surface Degreasing Cleaner

• Composition: Toluene (70%) + Isopropanol (20%) + Acetone (10%)
• Function: Combines toluene’s high dissolving capacity for mineral oils and lubricating greases with isopropanol’s wetting and stripping characteristics for polar soils, achieving high-efficiency rapid degreasing at room temperature.

Packaging

Fiber drum or carton box, lined with PE bag. Customized packaging available upon request.