Product Description: CUROX? M-403 is a colorless liquid consisting of a peroxide based on methyl ethyl ketone peroxide, desensitized by a mixture of dimethyl phthalate. It is used as a free radical source for the initiation of unsaturated polyester resins, usually in combination with a cobalt catalyst. Technical Data: Appearance: Clear Liquid Desensitizer: Dimethyl Phthalate Active Oxygen (AO): approx. 9.71 TP6T w/w Hydrogen Peroxide: approx. 1.71 TP6T w/w Moisture: approx. 1.51 TP6T w/w Density at 20°C: approx. 1.1 g/cm3 Viscosity at 20°C: approx. 20 mPa-s Flash Point: > 80°C Pro

Product Description: CUROX? M-503 is a colorless liquid consisting of a peroxide based on methyl ethyl ketone, desensitized by a phthalate plasticizer. It is used as a free radical source for the initiation of unsaturated polyester resins. Main applications: Hand fabrication, spraying, continuous lamination, centrifugal casting, fiber winding and polyester concrete. Technical Data: Appearance: Colorless liquid Active oxygen content: approx. 9.51 TP6T w/w Free hydrogen peroxide content: approx. 3.51 TP6T w/w Water content: approx. 5.01 TP6T w/w Desensitizing agent: dimethyl phthalate Density at 20°C: approx. 1.12 g/cm3 Viscosity at 20°C: approx. 20

Product Description: NOROX? ENP-102 is a colorless liquid consisting of a peroxide based on methyl ethyl ketone, desensitized by saturated fatty esters. It is used as a free radical source for the initiation of unsaturated polyester and vinyl ester resins. Main application: Curing of large molded parts at room temperature with cobalt catalysts. Technical Data: Appearance: Colorless liquid Reactive oxygen content: approx. 8.6% w/w Desensitizer: Saturated fatty ester Density at 20°C: approx. 1.01 g/cm3 Viscosity at 20°C: approx. 13 mPa-s Solubility: Insoluble in water, soluble in esters, unsaturated polyester resins/vinyl ester resins Applications

Product Description: NOROX? ENP-102 FRED is a red liquid consisting of a peroxide based on methyl ethyl ketone, desensitized by saturated fatty esters. It is used as a free radical source for the initiation of unsaturated polyester and vinyl ester resins. The red color of the peroxide helps to ensure optimum homogenization of the mixture and after the curing reaction the red color is no longer visible. Main application: Curing of large molded parts at room temperature together with cobalt catalysts. Technical Data: Appearance: Red Liquid Reactive Oxygen Content: approx. 8.61 TP6T w/w Desensitizer: Saturated Fatty Ester Density at 20°C: approx. 1.01 g/cm3 Viscosity at 20°C:

Product Description: Product Name: NOROX? ENP-90 Chemical Composition: Methyl ethyl ketone peroxide (MEKP) Appearance: Colorless, transparent liquid containing a methyl ethyl ketone based peroxide, desensitized by fatty esters. This ketone peroxide is used as initiator (free radical source) in the curing of unsaturated polyester resins. Main application: In combination with cobalt accelerators for the curing of molded parts at room temperature. Advantages: High efficiency in special pre-accelerated and stabilized resin types. Technical Data: Appearance: Colorless Transparent Liquid Reactive Oxygen Content: 8.6 - 9.2% Flash Point (Seta Closed Cup Method): > 77°C Density (

Product Description: Product Name: NOROX? ENP-90 FRED Chemical Composition: Methyl ethyl ketone peroxide (MEKP) Appearance: Red, flowing liquid containing a methyl ethyl ketone based peroxide, desensitized by means of a fatty ester. This ketone peroxide is used as initiator (free radical source) in the curing of unsaturated polyester resins. Special advantage: Due to the red peroxide, homogenization in the resin can be controlled and the red color disappears after curing. Highly efficient in special pre-accelerated and stabilized resin types. Main applications: Curing of molded parts at room temperature together with cobalt accelerators. Technical Data: Appearance: Red Liquid Active Oxygen

Product Description: Product Name: NOROX? ENP-92 Chemical Composition: Methyl ethyl ketone peroxide (MEKP) Appearance: Colorless, flowable liquid containing a methyl ethyl ketone based peroxide that is desensitized by means of a fatty ester. This ketone peroxide is used as initiator (free radical source) in the curing of unsaturated polyester resins. Main application: At room temperature with small amounts of cobalt accelerators for casting buttons or when centrifugally casting button plates. Technical data: Reactive oxygen content: approx. 9.91 TP6T (mass fraction) Desensitizer: Fatty ester Density (20°C): approx. 1.04 g/cm3 Viscosity at 20°C: approx. 21 mPa-s with water not

Product Description: Product Name: NOROX ? FS-100/9 Chemical Composition: Methyl ethyl ketone peroxide (MEKP) Main Uses: Mainly used in highly filled resin systems with high hydrogen peroxide content to provide rapid gelation and initial strength development. Not recommended for gelatin coatings or vinyl ester resins. TECHNICAL DATA: Reactive Oxygen Content: Not to exceed 9.01 TP6T APPEARANCE: Liquid COLOR: COLORLESS TRANSPARENT Specific Gravity at 25°C: 1.16 FLASH POINT (C.O.C.): Not less than 200°F/93°C FLASH POINT (SETA C.C.): Not less than 170°F/76°C SPONSORED DECOMPOSITION TEMPERATURE (SAD)

Product Description: NOROX ? HDP-75 Product Name: NOROX ? HDP-75 Chemical Composition: Methyl ethyl ketone peroxide/Hydrogen peroxy tert-butyl toluene Primary Use: Liquid polymerization initiator for curing specialty unsaturated polyester and vinyl ester resins at room temperature Product Advantages/Properties: Lower Peak Exotherm Longer Operational Time (Gel Time) Eliminates "Leading Edge Effect" prevalent with other peroxides in VRTM applications. "Leading Edge Effect" Faster initial strength than other tert-butyltoluene hydroperoxide blends Excellent final cure Eliminates the need for in-plant mixing of peroxides Reduced foaming potential when used with vinyl esters for penetration processes