Thinner

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Thinner is a volatile solvent or a blend of solvents formulated to reduce the viscosity of paints, coatings, lacquers, and varnishes for improved application properties. It enhances flow, leveling, drying time, and finish quality. Thinners are available in different grades tailored to specific resins or coatings—such as nitrocellulose, alkyd, polyurethane, or epoxy systems—and are crucial in industrial, automotive, wood, and general-purpose applications.

Description

Primary Uses
Paints & Coatings Industry
Viscosity Reduction: Essential for diluting paints, primers, and varnishes to achieve desired spray or brush application consistency.

Application Aid: Improves flow, leveling, and finish smoothness during brush, roller, or spray application.

Surface Preparation: Used to clean surfaces before painting to remove grease, oil, or dirt.

Tool Cleaning: Cleans paint equipment like spray guns, brushes, rollers, and containers after use.

Paint Removal: Acts as a stripping agent for removing old or excess coatings.

Automotive Industry
Automotive Paint Systems: Used with acrylic, polyurethane, and enamel paints for car refinishing, basecoats, and clearcoats.

Blending Solvent: Assists in blending new paint with existing paint for seamless repairs.

Pre-cleaning Solvent: Prepares metal or plastic car parts before coating or refinishing.

Wood & Furniture Finishing
Wood Lacquers and Varnishes: Thinner is used to reduce viscosity of shellac, lacquer, and polyurethane coatings applied to wood furniture and cabinetry.

Grain Highlighting: Helps penetrate wood grains during staining and enhances depth and clarity of finishes.

 

Secondary Uses
Printing Inks & Signage
Ink Diluent: Used in thinning solvent-based inks for screen printing and flexography.

Stencil Cleaning: Cleans screens, plates, and equipment used in solvent-based printing.

Industrial Manufacturing
Equipment Cleaning: Removes greases, oil residues, and adhesives from machines and production lines.

Chemical Blending: Serves as a carrier or intermediate solvent in custom chemical blends.

Marine & Aerospace Coatings
Marine Paints: Used in thinning marine-grade paints and antifouling coatings.

Aircraft Coatings: Part of solvent systems for applying aviation-specific coatings.

Art & DIY
Artists’ Paints: Dilutes oil-based or alkyd-based paints for fine art applications.

Craft Projects: Used in various home-improvement and craft projects involving oil-based products

PRODUCT KEY FEATURES

Basic Identification Attributes
Chemical Name (Varies by composition): May include toluene, xylene, acetone, MEK, IPA, ethyl acetate, or white spirit

Common/Trade Name: Thinner, Paint Thinner, Solvent Blend

CAS Number: Varies by formulation

HS Code: 3814.00.00 (Organic composite solvents and thinners)

Synonyms: Paint reducer, solvent blend, lacquer thinner, reducer

 

Physical & Chemical Properties
Physical State: Clear, volatile liquid

Color & Odor: Colorless to pale yellow; strong solvent odor

Boiling Point: Varies (typically 60–180 °C depending on solvent blend)

Flash Point: Typically < 25 °C (depends on formulation)

Solubility: Insoluble in water; miscible with organic solvents

Vapor Pressure: High (volatile compound)

Density: 0.75–0.90 g/cm³ (depends on formulation)

 

Safety & Hazard Attributes
GHS Classification: Flammable liquid, harmful by inhalation, eye/skin irritant

Toxicity: Moderate to high acute toxicity depending on solvent type (toluene, MEK, etc.)

Exposure Limits: OSHA PEL and ACGIH TLV apply for individual components (e.g., toluene: 20 ppm TLV)

 

Storage & Handling Attributes
Storage Conditions: Store in a cool, well-ventilated area away from heat, sparks, and open flames

Container Type: Metal drums, sealed cans, or solvent-resistant plastic containers

Shelf Life: 12–24 months if unopened and properly stored

Handling Precautions: Use non-sparking tools; ensure adequate ventilation; avoid static discharge

 

Regulatory & Compliance Attributes
Regulated under OSHA, REACH, TSCA, and GHS standards

Classified as a flammable and hazardous material for transport (UN 1263 – Paint Related Material)

Complies with local VOC regulations (where applicable)

Proper labeling and SDS (Safety Data Sheet) required for all handling and transport

 

Environmental & Health Impact
Biodegradability: Limited; varies by solvent blend

Ecotoxicity: Harmful to aquatic life; avoid environmental release

Bioaccumulation: Possible for aromatic solvents (e.g., toluene, xylene)

SAFETY HANDLING PRECAUTIONS

PPE Required: Chemical-resistant gloves, goggles, flame-resistant lab coat, respirator (if ventilation is poor)

Handling Guidelines: Avoid inhalation and skin contact; use with spark-proof equipment

Storage Measures: Store in approved flammable liquid storage cabinets or areas

 

First Aid Measures
Inhalation: Remove to fresh air; seek medical attention if breathing difficulty persists

Skin Contact: Wash thoroughly with soap and water

Eye Contact: Flush eyes with water for 15 minutes; seek medical help if irritation continues

Ingestion: Do not induce vomiting; seek immediate medical attention

 

Firefighting Measures
Fire Hazards: Highly flammable

Extinguishing Media: Foam, dry chemical, CO₂; avoid using water jets

Hazardous Combustion Products: Carbon monoxide, carbon dioxide, and various organic vapors