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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.
Description
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
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