Long Oil

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Long Oil refers to oils with a high content of unsaturated fatty acids, particularly linoleic and linolenic acids, commonly derived from drying oils such as linseed, soybean, or safflower oil. These oils have extended drying times and are used in various industrial applications where slow curing and flexible film formation are desired. Long oil is a key component in producing long oil alkyd resins, which are widely used in coatings, paints, varnishes, and printing inks due to their excellent adhesion, flexibility, and durability.

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Category: Binders/Resins Tags: Drying Oil, Long Oil, Long Oil Alkyd Resin, Lubricant, Paints & Coatings Industry

Description

Table of Contents

Long Oil

Primary Uses

Alkyd Resin Manufacture

Used as a major raw material in long oil alkyd resin production for paints and coatings, providing improved flexibility and adhesion.
Imparts slow drying characteristics suitable for applications requiring extended working time and durable finish.

Paints and Coatings

Incorporated in decorative and protective coatings for wood, metal, and masonry surfaces.
Enhances gloss, toughness, and weather resistance of coatings.

Printing Inks

Acts as a binder and plasticizer in certain ink formulations to improve flow, drying, and adhesion properties.

Varnishes and Sealants

Utilized in producing varnishes that require slow curing and a flexible film for wood finishing and protection.

Secondary Uses

Plasticizers

Used as a natural plasticizer in polymer formulations to improve flexibility and workability.

Lubricants

Employed as a base or additive in specialty lubricants requiring oxidation stability and film-forming properties.

Cosmetics and Personal Care

Occasionally used in formulations requiring natural oils with emollient and film-forming characteristics.

Chemical Intermediate

Used as a feedstock in chemical synthesis for drying agents, stabilizers, and other industrial chemicals.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Mixture of triglycerides rich in polyunsaturated fatty acids
Common/Trade Name: Long Oil; Drying Oil
CAS Number: Varies depending on source oil (e.g., Linseed Oil CAS 8001-26-1)
HS Code: 1515.90.00 (Vegetable oils and fats, other)
Synonyms: Drying oil; high-unsaturation oil; linseed-type oil

2. Physical & Chemical Properties

Physical State: Viscous liquid
Color & Odor: Yellow to amber; characteristic oily odor
Density: Approx. 0.92 g/cm³
Viscosity: High, dependent on temperature and source
Drying Time: Slow to moderate (hours to days depending on conditions)
Solubility: Insoluble in water; soluble in organic solvents

3. Safety & Hazard Attributes

GHS Classification: Combustible liquid; may cause skin irritation
Toxicity: Generally low toxicity but can cause dermatitis upon prolonged skin exposure
Exposure Limits: No specific occupational limits; observe good industrial hygiene

4. Storage & Handling Attributes

Storage Conditions: Store in cool, dry, and well-ventilated area away from ignition sources and direct sunlight
Container Type: Steel drums or sealed containers suitable for oils
Shelf Life: Typically 1–2 years if stored properly
Handling Precautions: Avoid moisture and contamination; minimize skin contact

5. Regulatory & Compliance Attributes

Complies with relevant chemical safety regulations (OSHA, REACH)
Suitable for industrial use; not typically regulated as a hazardous material

6. Environmental & Health Impact

Biodegradability: Biodegradable under aerobic conditions
Ecotoxicity: Low to moderate toxicity to aquatic organisms if released in large quantities
Bioaccumulation: Not significant
Carcinogenicity/Mutagenicity: Not classified as carcinogenic

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Gloves and safety goggles recommended during handling
Handling Guidelines: Use adequate ventilation; avoid prolonged skin contact
Storage Measures: Keep containers sealed and away from heat sources

First Aid Measures

Inhalation: Move to fresh air if inhalation of fumes or vapors occurs
Skin Contact: Wash with soap and water; seek medical advice if irritation develops
Eye Contact: Rinse with plenty of water; seek medical attention if irritation persists
Ingestion: Rinse mouth; seek medical attention

Firefighting Measures

Fire Hazards: Combustible liquid and may produce dense smoke on burning
Extinguishing Media: Foam, dry chemical, carbon dioxide, or water spray
Special Precautions: Use self-contained breathing apparatus in confined spaces
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, and various hydrocarbons