Product Information: Product Name: NOROX® 425 PR (tert-Butyl peroxy-3,5,5-trimethylhexanoate) CAS No.: 13122-18-4 Content: Approx. 90% Molecular mass: Not provided Appearance: Colorless liquid Main components: tert-Butyl peroxy-3,5,5-trimethylhexanoate Application: Used as an initiator in combination with cobalt catalysts for the curing of unsaturated polyester resins at elevated temperatures (60-120°C), especially for vinyl ester resins with a long gel time at room temperature. Technical Data: Peroxide content: approx. 901 TP6T w/w Reactive oxygen: approx. 6.301 TP6T w/w Desensitizer: none Density (20°C): approx. 0.90 g/kg.

Product Information: Product Name: NOROX® 425 (tert-Butyl peroxy-3,5,5-trimethylhexanoate) CAS No.: 13122-18-4 Content: technically pure liquid, peroxide content of about 99% Molecular mass: 230.3 g/mol Appearance: colorless liquid Main components: technically pure tert-Butyl peroxy-3,5,5-trimethylhexanoate Application: Used as an initiator for the polymerization of monomers (such as ethylene, styrene) Technical data: Appearance: colorless liquid Peroxide content: approx. 99% w/w Reactive oxygen: approx. 6.88% w/w Desensitizer: no Density (20°C): approx. 0.89 g/cm³ Viscosity (20°C): approx.

Product Information: Product Name: DCLBP-50-PSI (di(2,4-dichlorobenzoyl) peroxide) CAS No.: 133-14-2 Content: 50% Paste (in Silicone Oil) Molecular Mass: 380.0 g/mol Appearance: White Paste Main Ingredients: Approx. 50% Di-(2,4-dichlorobenzoyl) peroxide, desensitized by Silicone Oil Application: Used as initiator for crosslinking of polymers, especially silicone rubber (VMQ) Technical Data: Appearance: White paste Peroxide content: approx. 50% w/w Reactive oxygen species: approx. 2.10% w/w Desensitizer: Silicone oil Density (20°C): approx. 1.2

NOROX®MEKP-9H RED Chemical name: Methyl ethyl ketone peroxide CAS No.: 1338-23-4

Product Information: Product Name: NOROX® MEKP-9H FRED (Methyl Ethyl Ketone Peroxide) CAS No.: 37187-22-7 Form: Liquid Mixture Appearance: Red Reactive Oxygen Content: Not to Exceed 9.0% Flash Point: Minimum 200°F/93°C (C.O.C. Method), Minimum 170°F (SETA C.C. Method) SADT (Critical Temperature): 140°F (60°C) Solubility: Soluble in organic oxidizing solvents, slightly soluble in water Storage Temperature: Below 80°F Application: NOROX® MEKP-9H FRED is suitable for curing at room temperature.

Description: This document describes the chemical Norox® MEKP-9H, a methyl ethyl ketone peroxide, used as a general purpose curing agent for polyester resins cured at room temperature. It is also suitable for use in heated continuous mixing systems such as polymer concrete and artificial marble products. TECHNICAL DATA: Reactive Oxygen Content: Not to exceed 9.01 TP6T FORMULATION: Liquid SPECIFIC GRAVITY (25°C): 1.11 FLASH POINT (C.O.C.): Minimum 200°F/93°C FLASH POINT (SETA C.C.): Minimum 170°F SPONTANEOUS DISCOMPOSITION TEMPERATURE (SADT): 140°F (60°C) SOLUBILIZABLE IN: OXYGENATED ORGANIC SOLVENTS MISSOURFICIENTLY SOLUBILIZABLE IN: WATER

Product Information: Product Name: NOROX ® MEKP-925H RED Chemical Name: Methyl Ethyl Ketone Peroxide CAS No.: 1338-23-4 Physical State: Liquid Mixture Color: Water White with Red Dye Technical Data: Reactive Oxygen Content: Maximum 9.0% Form: Liquid Density (25°C): 1.10 Flash Point (C.O.C.): Minimum 200°F. Flash Point (C.O.C.): 200°F minimum Flash Point (SETA C.C.): 170°F minimum Solubility: Soluble in oxygenated organic solvents, slightly soluble in water Self-Ascalation Temperature (SADT): <140°F (60°C)

NOROX®MEKP-925H FRED Chemical name: Methyl ethyl ketone peroxide CAS No.: 1338-23-4

Product Description: Product Name: NOROX® MEKP-925H Chemical Composition: Methyl ethyl ketone peroxide Physical State: Liquid Mixture Product Characteristics: Specifically formulated to reduce outgassing in vinyl acid resins for critical corrosion prevention applications such as gelatin coatings, barrier coatings and corrosion resistant structures. Low hydroperoxide levels often require modification of the resin promotion system to obtain reasonable gel times. TECHNICAL DATA: Reactive Oxygen Content: not more than 9.01 TP6T Form: Liquid Color: Colorless and Clear Specific Gravity (25°C): 1.10 Flash Point (C.O.C.): not less than 200°F Flash Point (SETA C.C.)