Description

Methylcyclohexylidene Hydroperoxide is an organic hydroperoxide compound widely employed as a free-radical initiator in polymerization processes. Its controlled thermal decomposition enables precise initiation kinetics, making it essential for high-performance thermoset resins and specialty elastomers. Industrial formulators in composites, adhesives, and advanced coatings rely on its consistent reactivity and low volatility profile. Methylcyclohexylidene Hydroperoxide CAS NO 85896-56-6 delivers reliable performance where reproducible cure profiles and minimal byproduct formation are critical.

Application

• Free-radical initiator for unsaturated polyester (UP) resin curing in fiberglass-reinforced plastics (FRP)
• Co-initiator in vinyl ester resin systems for marine and corrosion-resistant tank linings
• Crosslinking agent for silicone rubber formulations requiring low-temperature vulcanization
• Initiator in acrylic-based pressure-sensitive adhesive (PSA) manufacturing
• Controlled oxidation catalyst in fine chemical synthesis of cyclohexanone derivatives
• Component in redox initiation systems for emulsion polymerization of styrene-butadiene copolymers

Basic Information

Product Name	Methylcyclohexylidene Hydroperoxide
CAS No.	85896-56-6
Molecular Formula	C7H12O2
Molecular Weight	128.17 g/mol
Synonyms	1-Methylcyclohexylidene hydroperoxide; 1-(Hydroperoxy)-1-methylcyclohexane; MCHP; Methylcyclohexanone hydroperoxide; Cyclohexanone, 1-(hydroperoxy)-1-methyl-; 1-Hydroperoxy-1-methylcyclohexane; Methylcyclohexylidene peroxide; 1-Methyl-1-hydroperoxycyclohexane
EINECS	284-634-1

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches conform to ISO 9001-certified manufacturing protocols and meet stringent purity requirements for industrial initiators. Testing includes identity confirmation (IR, NMR), assay quantification (iodometric titration), and impurity profiling (GC). Specifications align with ACS Reagent Grade benchmarks for organic peroxides where applicable.

Storage

Preserve in a tightly closed container, protected from light. Store at temperatures between 2–8 °C under inert atmosphere (nitrogen or argon) to prevent premature decomposition. Keep away from heat sources, ignition sources, and incompatible materials including strong reducing agents, metal salts, and strong acids. Ensure adequate ventilation in storage areas due to potential peroxide vapor accumulation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Assay (by iodometric titration)	≥ 70.0%
Active Oxygen Content	≥ 8.8%
Identification (IR)	Conforms to reference spectrum
Water Content (Karl Fischer)	≤ 0.5%
Residue on Evaporation	≤ 0.1%
pH (1% aqueous solution)	4.0–6.0

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.