Distilled cashew nut shell liquid
Distilled Cashew Nut Shell Liquid (CNSL) is a versatile, bio-based raw material used extensively in industrial chemistry. It is a natural source of cardanol, a substituted phenol that offers a sustainable alternative to petroleum-derived products.
Applications
- Protective coatings and paints. Distilled CNSL is a key ingredient in the manufacture of surface coatings because of its hydrophobic (water-resistant) nature.
- Marine paints. Providing excellent resistance to corrosion and barnacle growth.
- Anti-corrosive primers. Protecting structural steel and industrial pipelines.
- Enamels and varnishes. Enhancing the gloss and durability of wood and metal finishes.
- Friction materials for automotive industry. CNSL-derived resins to create friction dust which is incorporated into brake linings, clutch facings and disc pads to improve heat stability, eto enhand the grip and longevity of the friction surfaces.
Characteristics
- Appearance. A clear, pale-yellow to reddish-brown oily liquid. Unlike the crude version, the distilled variant is significantly lighter in colour.
- Odour. Characteristically phenolic, though less intense than crude CNSL.
- Composition. Primarily consists of cardanol (typically >90%), a monohydric phenol with a long 15-carbon unsaturated side chain.
- Solubility. Insoluble in water but highly soluble in most organic solvents, including alcohols, ethers, and hydrocarbons.
- Viscosity. Exhibits low viscosity compared to the raw liquid, making it easier to handle and process in industrial applications.
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