United Initiators NOROX®CHP-90 Cumyl hydroperoxide 80-15-9

Basic Information

• Name: NOROX® CHP-90
• Chemical composition: cis-isopropylbenzene peroxide/2-peroxyisopropylbenzene
• CAS No.: 18-15-9
• Form: liquid mixture

descriptive

• NOROX® CHP-90 is a colorless to pale yellow liquid solution of cis-isopropylbenzene peroxide. It is an economical free radical initiator for unsaturated polyester resins, vinyl monomers, as well as greases and alkyds.
• NOROX® CHP-90 can be used alone or in combination with other peroxides in ambient and elevated temperature processes.

Technical data

• Cis-isopropylbenzene hydrogen peroxide content: 90.0 (nominal)
• Form: Liquid
• Density @ 25°C: 1.05
• Flash Point (SETA C.C.): 150°F/66°C minimum
• Soluble in: alcohols, ketones, esters, hydrocarbons
• Slightly soluble in: water

appliance

• NOROX® CHP-90 is particularly suitable for initiating the cure of unsaturated polyester resin systems at ambient and elevated temperatures.
• Typically, the exothermic profile exhibited is mild and flat, leading to a gradual but thorough cure. This characteristic reduces material cracking, especially in thicker cross-linked sections.
• NOROX® CHP-90 is typically used in pre-promoted resin systems where cobalt and/or manganese compounds are the primary accelerators.
• CAUTION: NOROX® CHP-90 should never be mixed directly with acids or accelerators. It may cause violent decomposition leading to fire and/or explosion.

chemical structure

• Molecular mass: 152 g/mol
• Empirical formula: C9H12O2
• Thermal decomposition data: Temperature 159°C (318°F) 10 hours, 190°C (374°F) 1.0 hours, 230°C (446°F) 0.1 hours

Packaging, transportation and availability

• NOROX® CHP-90 is available in standard package sizes of 4x8 lb and 44 lb (20 kg) polyethylene bottles.
• Classification: Refer to sections 14 and 15 of the Safety Data Sheet (SDS) for specific NOROX® CHP-90 for transportation and regulatory information.
• NOTE: NOROX® CHP-90 is available through a global network. contact United Initiators, Inc. for distributor information in your area.

statement denying or limiting responsibility

• The information and technical advice provided is based on in-house testing using local raw materials and is intended to introduce our products and applications. This information should not be regarded as providing a guarantee of the characteristics or suitability of the products described, nor do they provide complete instructions for use.
• This information does not provide a warranty for the product and shelf life, nor does it assume any liability in relation to intellectual property rights, in particular patent rights.
• We reserve the right to make any changes based on technological advances or further developments.
• The use and application of our products in accordance with our technical recommendations is the sole responsibility of the user and is beyond our control.
• It is the responsibility of the user to perform careful incoming inspection and testing to verify that the product is suitable for the intended use.