K-FLEX® 500

K-FLEX® 500 is a blend of dipropylene glycol dibenzoate and diethylene glycol dibenzoate in a ratio of about one to one by weight. K-FLEX® 500 was created to take advantage of the excellent performance of diethylene glycol dibenzoate but with the added advantage of the better handling characteristics imparted by dipropylene glycol dibenzoate. Like K-FLEX® DP, K-FLEX® 500 is a polar plasticizer that is a high solvator for PVC applications. K-FLEX 500 is also compatible with polar polymers such as polyvinyl acetate.


Attribute Value
Acidity% (as benzoic acid, maximum %) 0.1
Assay% (As benzoate ester, Minimum,% ) 98.0
Color Maximum (APHA) 100
Typical Properties
Boiling Point (5 mm Hg,C) 191
Color (APHA) 50
Density, ASTM D1475, 25C g/ml 1.15
Density, ASTM D1475 ,25C lbs/gal 9.6
Flash Point, ASTM D92, C 210
Freeze Point, C 6
Glass Point, by DSC, C -54
Moisture Content, % 0.02
Refractive Index, 25C 1.5306
Solubility, in water, % 0.07
Solubility Parameter, Small's Hildebrands 9.7
Specific Gravity, 25/25C 1.14
Surface Tension, ASTM D1331, 25C, dynes/cm 44.4
Vapor Pressure, 25C (extrapolated), mmHg 2.58x10-5
Viscocity, Brookfield RVT, 20 RPMs at 25C, cps and mPa.S 80
Viscosity, Kinematic, 25deg;C, cSt 70
VOC, ASTM D2369, % 2.9
FDA Coverages
21 CFR 175.105 Yes
21 CFR 176.170 Yes
22 CFR 176.180 Yes
Application Group Application Description  
Adhesives Hot-melt Adhesives Effective plasticizer in hot-melt adhesives
Adhesives Water-based Latex Adhesives Effective plasticizer for water-based latex adhesives
Paints & Coatings Exterior Latex Paint Effective coalescent in Exterior latex paints.
Paints & Coatings Industrial Coatings Effective coalescent for Industrial Coatings applications.
Paints & Coatings Interior Latex Paint Effective coalescent in Interior latex paints.
Paints & Coatings Lacquers - Nitrocellulosic & Acrylic Highly recommended coalescent for Nitrocellulosic & Acrylic Lacquers.
Vinyl Plastisol Flooring Effective and economical plasticizer for Plastiol Flooring.

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K-FLEX is a registered trademark of Emerald Performance Materials, LLC for its line of low-VOC plasticizers and coalescents.
K-FLEX is also a registered trademark of King Industries, Inc. for its line of polyester and urethane polyols and resin modifiers.

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