Views: 0 Author: Site Editor Publish Time: 2026-06-05 Origin: Site
When it comes to PVC processing, speed matters -- and no plasticizer delivers faster fusion than Dibutyl Phthalate. DBP (CAS 84-74-2) is the compact powerhouse of the phthalate family: at just 278.34 g/mol, its small molecular size allows it to penetrate PVC resin particles with remarkable speed, initiating gelation at temperatures 20 to 30 degrees Celsius lower than conventional DOP. This isn't just a minor processing convenience -- it translates directly to reduced energy consumption, faster production line speeds, and the ability to process heat-sensitive formulations that would degrade under standard conditions. At Ningbo Dongbo New Energy, we manufacture DBP to ester purity exceeding 99.5% with an acid value held below 0.02 mgKOH/g, ensuring that every batch delivers the consistent, predictable fast-fusing performance that high-throughput manufacturing operations depend on. As a REACH compliant PVC plasticizer produced under ISO 9001:2015 certified quality systems, our DBP meets the regulatory requirements of the European Union and global markets while delivering the specialized solvating characteristics that have made it an enduring standard in adhesives, coatings, printing inks, and plastisol processing for over half a century. |
What gives DBP its legendary fast-fusing capability? The answer lies in its molecular design. The compact dibutyl ester side chains create a plasticizer molecule with exceptionally high polarity and minimal steric bulk -- the perfect combination for rapid diffusion through the PVC polymer matrix. When DBP encounters a PVC resin particle, it solvates the polymer chains quickly and thoroughly, breaking down crystalline domains and initiating gelation far faster than larger, bulkier plasticizer molecules can manage. Quantitatively, this advantage is substantial: DBP-plasticized plastisols reach full fusion 40 to 60 percent faster than equivalent DOP formulations, and gelation temperatures drop by approximately 20 to 30 degrees Celsius. The practical implications for manufacturers are significant -- higher oven line speeds in coating operations, shorter cycle times in rotational molding, and meaningful reductions in energy costs. Beyond speed, DBP offers excellent plasticizing efficiency: achieving the same Shore A hardness at loading levels 10 to 15 percent lower than DOP on an equivalent weight basis. When used as a co-plasticizer at 10 to 20 percent of total plasticizer content, DBP acts as a potent viscosity depressant in plastisol systems, typically reducing low-shear viscosity by 30 to 50 percent -- a critical advantage for dip molding and coating applications requiring precise rheology control. Our DBP is consistently water-white in appearance with a Pt-Co color value not exceeding 20, and features essentially no detectable odor, reflecting the advanced distillation and purification technology employed in its manufacture. |
DBP's unique performance profile makes it the plasticizer of choice -- and in many cases, the only viable choice -- across several specialized application domains. In the adhesives industry, which represents the largest single market for DBP, it serves as the primary PVC plasticizer in both solvent-borne and aqueous PVC contact adhesives. Here, DBP's rapid solvation of PVC resin ensures fast adhesive film formation, quick development of tack, and strong, flexible bonds to substrates ranging from wood and metal to textiles and rigid plastics -- essential properties for high-speed lamination lines producing everything from furniture edge banding to automotive interior trim. In PVC plastisol processing, DBP functions as both a secondary plasticizer and a critical processing aid: its gelation acceleration enables faster oven curing of dip-coated tool handles, rotationally molded hollow parts, and slush-molded automotive skins, while its viscosity-reducing effect allows higher filler loadings and better penetration into fabric substrates. The printing ink sector depends on DBP as a key PVC additive in screen and gravure inks for flexible PVC films and sheets, where it imparts the ink film flexibility, substrate adhesion, and crack resistance that prevent print defects during product forming and end-use. Beyond PVC, DBP is widely used as an external plasticizer for nitrocellulose lacquers and coatings, improving film flexibility, impact resistance, and adhesion in applications ranging from wood furniture finishes to nail polish. Additional niche applications include DBP as a flexibilizing additive in epoxy resin systems, a processing aid in rigid PVC compound formulations, a component in fragrance fixative preparations, and a plasticizer in certain pharmaceutical coating systems operating under approved regulatory frameworks. |
Global supply chain reliability is a cornerstone of the Ningbo Dongbo value proposition. We operate three strategically located overseas warehouses to ensure that DBP and our complete portfolio of PVC plasticizers reach customers quickly and cost-effectively, regardless of location. Our Hamburg, Germany distribution center serves the European Union market -- all inventory is fully REACH registered and compliant with RoHS Directive 2011/65/EU and EU Regulation 10/2011 on plastic materials intended for food contact, with SEPA bank transfer support for seamless EU transactions. Our Los Angeles, United States warehouse maintains TSCA-listed, CPSIA-compliant, and California Proposition 65 compliant DBP inventory for immediate shipment to customers throughout North America. For the rapidly expanding Southeast Asian market, our Singapore logistics hub provides ASEAN-compliant products supported by regional technical service and regulatory documentation. We accept three flexible, internationally recognized payment methods: T/T (telegraphic transfer) for bulk container and flexitank orders, irrevocable L/C at sight (letter of credit) for long-term supply contracts and first-time buyer transactions, and PayPal for sample orders and small-volume trial purchases. This tri-regional warehousing infrastructure typically enables delivery from local stock within 3 to 7 business days for most destinations, significantly reducing your import duties, ocean freight costs, and customs clearance complexity compared to direct China factory shipments. |
Ningbo Dongbo New Energy Co., Ltd. has been a trusted name in PVC plasticizer manufacturing since our founding in 2010. As an ISO 9001:2015 certified producer with our factory strategically located near Shanghai Port -- one of the world's busiest container shipping hubs -- we combine manufacturing excellence with logistical efficiency to serve customers across Asia, Europe, the Americas, the Middle East, and Africa. What sets us apart as a B2B plasticizer supplier is our commitment to making it easy for new customers to evaluate our products with zero risk: we provide complimentary DBP samples of up to 1 kilogram for laboratory testing and formulation trials. Simply share your DHL, FedEx, or UPS collect account number and we will dispatch your samples within 48 hours, along with a certificate of analysis for the specific batch. We offer flexible packaging solutions to match your operational needs -- choose from standard 200 kg iron drums, 1000 kg IBC totes, 23 metric ton flexitanks for bulk liquid transport, or OEM custom packaging with your company branding and labeling specifications. Our minimum order quantities are designed to accommodate both trial evaluations and full-scale production: start with as little as 1 metric ton for initial qualification, then scale to 100+ metric tons per month under long-term supply agreements with price stability guarantees. For technical questions, free sample requests, or a personalized quotation, please contact Ms. Alice Yang directly at alice@dobonewenergy.com or via WhatsApp at +86-15824288686. We invite you to experience the Dongbo difference -- consistent quality, competitive factory-direct pricing, and the peace of mind that comes from a supply partnership built on reliability and transparency. |
Technical Specifications & Quality Parameters | |
Parameter | Specification |
Product Name | Dibutyl Phthalate (DBP) |
CAS Registry Number | 84-74-2 |
EINECS Number | 201-557-4 |
Molecular Formula | C16H22O4 |
Molecular Weight | 278.34 g/mol |
Chemical Structure | Di-n-butyl ester of 1,2-benzenedicarboxylic acid |
Ester Content (GC Purity) | >= 99.5% |
Acid Value (as Phthalic Acid) | <= 0.02 mgKOH/g |
Density at 20 deg C | 1.044 - 1.048 g/cm^3 |
Flash Point (Cleveland Open Cup) | >= 170 deg C |
Boiling Point at 760 mmHg | 340 deg C |
Heat Loss (125 deg C, 2 hours) | <= 0.3% |
Color (Platinum-Cobalt Scale) | <= 20 APHA |
Refractive Index at 20 deg C | 1.491 - 1.493 |
Water Content (Karl Fischer) | <= 0.1% |
Dynamic Viscosity at 20 deg C | 16 - 20 mPa.s |
Free Acidity (as Phthalic Acid) | <= 0.005% |
Appearance | Clear, water-white oily liquid; essentially odorless |
Solubility | Miscible with most organic solvents; 0.04% in water at 25 deg C |
Packaging Options | 200 kg net iron drum / 1000 kg IBC tote / 23 MT flexitank / Custom OEM packaging available |
Recommended Storage | Cool, dry, well-ventilated area; keep containers tightly sealed; avoid moisture and direct sunlight |
Shelf Life | 24 months from date of manufacture when stored in unopened original packaging under recommended conditions |
Certifications | ISO 9001:2015, REACH (EU), RoHS, TSCA (US), GB/T 11406 (China National Standard) |
