Cyclohexanone peroxide CYP 12262-58-7; 123-42-2

Cyclohexanone Peroxide
Trade Name: Initiator CYP
English Name: Cyclohexanone Peroxide
Chemical Name: Cyclohexanone Peroxide
Chemical Structure:
Molecular Formula: C12H22O6
Molecular Weight: 246.3
Theoretical Active Oxygen Content: 6.5%
Actual Active Oxygen Content: 4.7%–5.0%
CAS Number: 12262-58-7; 123-42-2
UN No. 3105
Type D liquid organic peroxide.
Major decomposition products: CO₂, cyclohexanone, hexanoic acid, isododecanoic acid, water.
Safety parameters:
Half-life (measured in chlorobenzene solution):
0.1 hour: --
1 hour: --
10 hours: --
Thermal Stability Data:
Self-Accelerating Decomposition Temperature (SADT): 50°C
Critical Temperature (Tem): --
Control Temperature (Tc): --
Storage Temperature (Tsmax): --/25°C
Technical Specifications:
Appearance: Clear liquid
Applications:
This product is a room-temperature curing agent for unsaturated polyesters. Compared to methyl ethyl ketone peroxide, it has a shorter gel time and
a lower exothermic peak, making it more suitable for stepwise curing processes. These characteristics make it particularly well-suited for the production of thick molded
products and buttons. It is also well-suited for processes such as injection molding; however, for room-temperature curing, it must be
used in conjunction with cobalt-based accelerators.
Packaging and Transportation:
CYP is standardly packaged in PE plastic drums with a net weight of 20 kg. Packaging according to customer specifications is also available.
Class D liquid organic peroxides; Goods Classification: 5.2; UN Number: 3115; Class 2 dangerous goods
packaging.
Storage Precautions:
Keep the packaging tightly sealed and in a well-ventilated area. The maximum storage temperature is 25°C. Avoid contact with reducing agents such as
amines, acids, alkalis, and heavy metal compounds (accelerators and metal soaps). Repackaging and handling within the warehouse are strictly prohibited.
Product Shelf Life:
When stored and transported strictly in accordance with the manufacturer’s instructions, product quality is guaranteed for three months.
Fire Protection:
For small fires, use dry powder or carbon dioxide fire extinguishers, while simultaneously spraying with copious amounts of water to prevent reignition. For large fires,
spray with copious amounts of water from a safe distance.