Product Description::

• NOROX ? 411 is a colorless liquid composed mainly of technically pure tert-amyl peroxy-2-ethylhexanoate.
• This is a branched aliphatic peroester used as a free radical initiator for unsaturated polyester resins hardening at 70 - 150°C, possibly in conjunction with cobalt accelerators.

Technical data::

• Appearance: colorless liquid
• Content: about 98%
• Active Oxygen (AO): approx. 6.811 TP3T
• Density: approx. 0.9 g/cm3
• Viscosity at 20°C: approx. 4.3 mPa-s
• Refractive index at 20°C: approx. 1.433
• Flash point: approx. 59°C
• Vapor pressure at 25°C: less than 0.1 mbar
• Critical temperature (SADT): approx. 35°C
• Recommended storage temperature: below 10°C
• Storage stability (from date of delivery): 3 months
• Standard Packaging: 1 gallon bottles, 5 gallon containers

appliance::

• Polyester Hardening: Hardening agent for UP resins, may be used with cobalt accelerators. Temperature range: 70 - 150°C.
• Recommended dosage: 1 - 21 TP3T, may be used with accelerator Co-1 at 0.5 - 11 TP3T.
• "Shelf life" (gel time of resin + peroxide) is several weeks at room temperature, depending on the resin type, filler and pigment.
• The "Pot life" (gel time of resin + peroxide + accelerator) can be several days, depending on the temperature and the amount of peroxide used.
• Shelf life or Pot life can be significantly extended by the addition of BC-510, an inhibitor of 0.1 - 0.3 %.

Hardening Properties::

• In the range of 65 - 75°C ("kick-off" temperature), hardening is not very fast, unless there is an exothermic reaction (e.g. in an insulated mold). A short hardening time can only be achieved in the optimal temperature range of 110 - 130°C in a wet mold.

Treatment::

• Particularly suitable for continuous impregnation (paper-layer pressing), moist-heat compression molding, surface coatings for wood varnish, and infrared-heated electric insulating varnish.

stockpile: Avoid any source of heat, light, humidity and protect the product from impurities. Keep it within the safe temperature range.