Plasticizers are the additives that turn rigid PVC into the flexible material used in cables, footwear, films, hoses, and synthetic leather. Among them, DOP (Dioctyl Phthalate) is the most widely used general-purpose plasticizer in India, supported by alternatives such as DBP and non-phthalate options.
Supreme Petro Chemicals supplies plasticizers from Chennai to PVC compounders, cable manufacturers, footwear producers, and flexible-PVC processors across South India.
What Do Plasticizers Do?
PVC on its own is a hard, brittle polymer. Plasticizers work by inserting themselves between the polymer chains, reducing the forces that hold them rigid. The result is a softer, more flexible, more workable material. The type and dosage of plasticizer directly control the final hardness, flexibility, and low-temperature performance of the PVC product.
Common Plasticizers and Their Uses
- DOP (Dioctyl Phthalate, CAS 117-81-7): The general-purpose workhorse. Good balance of cost, performance, and processing. Used in cables, footwear, films, sheets, and moulded goods.
- DBP (Dibutyl Phthalate, CAS 84-74-2): A faster-fusing plasticizer, often used in adhesives, sealants, and as a secondary plasticizer.
- DEP (Diethyl Phthalate, CAS 84-66-2): Used in cosmetics, fragrances, and selected cellulose-based applications.
- CPW (Chlorinated Paraffin Wax): A cost-effective secondary plasticizer and flame retardant, frequently used alongside DOP in cables and footwear.
How to Select the Right Plasticizer
The choice depends on the end product and its requirements:
- Flexibility and hardness target: Higher plasticizer loading gives softer material; the type affects the feel and durability.
- Low-temperature performance: Some applications (cold-climate cables) need plasticizers that keep PVC flexible in cold conditions.
- Cost target: DOP plus a secondary plasticizer such as CPW is a common cost-optimised blend.
- Regulatory requirements: Some export or food-contact applications restrict certain phthalates; confirm the requirement before specifying.
Packaging and Minimum Order
Plasticizers are supplied in 200-litre MS drums, 1000-litre IBC tanks, and bulk tanker loads. MOQ depends on the product, packaging, and delivery location. For continuous compounding, share your monthly consumption so stock and dispatch can be planned ahead.
Storage and Handling
Plasticizers are stable, low-volatility liquids and are not highly flammable, but they should be stored in clean, closed containers away from contamination and extreme heat. Follow the product SDS and your site procedure for handling and PPE.
Get a Plasticizer Quote from SPC
Supreme Petro Chemicals supplies DOP, DBP, DEP, and CPW to PVC processors across South India in drums, IBC tanks, and tanker loads. Contact us for current pricing, or browse our plasticizers catalog.