Cashew Nut Shell Liquid - cashew phenol

"Subraya engineers CNSL for your products."

Cashew nut shell liquid (CNSL), Cardanol, Residol and its derivatives are versatile in its properties. Such amazing Natural products comes in varying specifications. Subraya is competent in providing its customers with Cashew nut shell liquid (CNSL) products within the required specifications.

Viscocity, pH, Ash content, Colour etc. are important to customers in different degrees and need to be controlled during production. Our capabilities in handling the specifications help our customers manufacture high quality products from Cashew nut shell liquid (CNSL) and its derivatives.

With manufacturing capacity of 200mts per month in 3 different facility and ample supply of raw material and storage facility to match the production, Subraya can supply Cashew nut shell liquid (CNSL) throughout the year consistently.

With four decades of experience in Cashew nut shell liquid (CNSL) and its derivatives, you can depend on us to provide consistent quality in our products. Our team constantly learns and upgrades the processes to meet your needs.

We manufacture cold processed Cashew nut shell liquid (CNSL). Cashew nut shell is heated in a steam jacketed vessel before being squeezed into the worm of the expeller. The expelled liquid then goes through four stages of settling before being heated to the required temperature of 175degree Celsius.

USES OF Cashew nut shell liquid (CNSL)


Viscosity @ 30degree Celsius (Brooke Fields Method) 130CPS max.

Ash Content at 800 degree Celsius 0.5% to 0.95%

Polymerization time 3 minutes max.

Moisture Content 0.3% max

Insoluble Matter in toluene 1% max.

CHEMICAL STRUCTURE OF Cashew nut shell liquid (CNSL)

Cashew nut shell liquid (CNSL) is one of the sources of naturally occurring phenols. It is obtained from the shell of a cashew nut. About 30-35% CNSL is present in the shell, which amounts to approximately 67% of the nut. Cashew nut shell liquid (CNSL) is traditionally obtained as a by-product during the process of removing the cashew kernel from the nut. The processes used are mainly hot-oil and roasting in which the Cashew nut shell liquid (CNSL) oozes out from the shell. The cashew tree is cultivated globally in tropical areas such as East Africa, South and Central. America and the Far East. The world availability of CNSL is in the region of 50,000 tons/year.

Natural (i.e. cold, solvent extracted) Cashew nut shell liquid (CNSL) contains approximately 70% anacardic acid (Fig 1), 18% cardol, and 5% cardanol, with the remainder being made up of other phenols and less polar substances. As can be seen in Figure 1, anacardic acid, cardanol and cardol consist of mixtures of components having various degrees of unsaturation in the alkyl side-chain.

In technical (i.e. heat extracted) Cashew nut shell liquid (CNSL), the heating process leads to decarboxylation of the anacardic acid to form cardanol. Typically, the composition of technical CNSL is approximately 52% cardanol,10% cardol, 30% polymeric material, with the remainder being made up of other substances.The technical Cashew nut shell liquid (CNSL) is often further processed by distillation at reduced pressure to remove the polymeric material. The composition of distilled technical Cashew nut shell liquid (CNSL) is approximately 78% cardanol, 8% cardol, 2% polymeric material and the remainder other substances.

TYPES OF PACKING AVAILABLE for Cashew nut shell liquid (CNSL)

Subraya also provides various types of packings to address the customers needs in shipment, storage and easy handling of Cashew nut shell liquid (CNSL)

  • 200kg Mild Steel Drums

  • 200kg Galvanized Iron Drums

  • 20 Metri Tonne Flexible Tanks for bulk shipments

  • Intermediate Bulk Containers (IBC)

  • 15 Metric Tonne Tanker Trucks





Commercial Applications of Cashew nut shell liquid (CNSL)

Cashew nut shell liquid (CNSL) resins have been used extensively in the manufacture of friction-resistant components in applications such as brake and clutch linings. These resins are used as binders for friction ingredients and also as friction ingredients themselves in the form of fine dusts obtained from the completely cured resins.

Cashew nut shell liquid (CNSL)-aldehyde condensation products and Cashew nut shell liquid (CNSL)-based phenolic resins are used in applications such as surface coatings, adhesives, varnishes and paints. Various polyamines synthesised from CNSL or cardanol are used as curing agents for epoxy resins. Cashew nut shell liquid (CNSL) and its derivatives have been used as antioxidants, plasticisers and processing aids for rubber compounds and modifiers for plastic materials.

Resins based on the reaction products of cardanol phenol and formaldehyde are used to improve the resistance of rubber articles to cracking and ozone. Cashew nut shell liquid (CNSL), cardanol and cardol are all used to provide oxidative resistance to sulfur-cured natural rubber products. Cardanol, Cashew nut shell liquid (CNSL) or sulfurated Cashew nut shell liquid (CNSL) is added to rubber gum stock or nitrile rubber to improve the processability, mechanical properties and resistance to crack and cut properties of the vulcanisates.

A number of products based on Cashew nut shell liquid (CNSL) are used as antioxidants, stabilisers and demulsifiers for petroleum products. Metal xanthates of partially hydrogenated, sulfurised cardanol is used to lower the pour point of lubricating oils as well as acting as antioxidant and anticorrosive properties. Soluble metal derivatives of Cashew nut shell liquid (CNSL) are used to improve the resistance to oxidation and sludge formation of lubricating oils. Oxidised Cashew nut shell liquid (CNSL) and its derivatives are used as demulsifying agents for water in oil type petroleum emulsions.

Application of Cashew nut shell liquid (CNSL)

Brake Lining

Cashew nut shell liquid (CNSL) Formaldehyde resins are used for brake liner binding preparation

Surface Coating

Above resin dissolved in aromatic solvent provide weather proof heat and fire resistant dark color paint


A rubbery gel formaldehyde condensation product of cnsl is used in cementing of floors

Adhesive for wood particle

Resole type Cashew nut shell liquid (CNSL) formaldehyde resin in adhesive in the preparation of composite wood,medium density particle board etc..


proven material in the formation of foundry core