Perodox® 29 - 1,1-Di(tert-butylperoxy)-3,3,5-trimethylcyclohexane

The chemical name is 1,1-Di(tert-butylperoxy)-3,3,5-trimethylcyclohexane

The molecular formula is C17H34O4

The molecular weight is 302.46 g/mol

It is a clear, colorless to light yellow liquid

Common synonyms include Perodox 29, Luperox 231, Trigonox 29, Perhexa 3M, TMCH, and Varox 231

It is primarily used as a crosslinking agent for polymers and as a polymerization initiator

It is used for crosslinking polyethylene, polystyrene, ethylene-vinyl acetate (EVA) copolymers, and unsaturated polyesters

Yes, it is used in the vulcanization of silicone rubber and polyurethane

It is commonly available as 40%, 75%, 90%, or 98% solutions in solvents like isododecane or mineral oil

The active oxygen content is typically between 9.31% and 9.52%

The density is approximately 0.895 - 0.955 g/cm³ at 20°C

The melting point is -20°C

The boiling point is approximately 403.47°C

The flash point is 62°C

No, it is immiscible with water

The refractive index (n20/D) is between 1.441 and 1.453

The vapor pressure is 0.009 Pa at 20°C

The logP (partition coefficient) is about 6.92 to 7 at 20-25°C, indicating high lipophilicity

The 10-hour half-life temperature is 92°C, and the 1-hour half-life temperature is 112°C

Store in a tightly closed container in a cool, well-ventilated place, ideally at or below +4°C, away from heat and ignition sources

The UN number is 3110 or 3103, classified under Class 5.2 (Organic Peroxides)

The primary hazard statement is H241: "Heating may cause a fire or explosion"

Wear protective gloves, clothing, eye protection, and face protection. Use in a well-ventilated area

It may be harmful if inhaled or ingested, and it can cause irritation. It is also toxic to aquatic life

Wash immediately with plenty of soap and water. Seek medical attention if irritation persists

Rinse cautiously with water for several minutes. Remove contact lenses if present. Seek medical advice

Yes, it is a strong oxidizing agent and can react explosively with reducing agents, acids, and combustible materials

The SADT is 60°C

It is commonly packaged in 20 kg or 25 kg polyethylene (PE) drums

Common solvents include isododecane, mineral oil, and ethyl benzene

The activation energy is 35.1 kcal/mol

It may decompose rapidly in the presence of transition metals (e.g., cobalt, iron), so avoid contamination

When stored properly at low temperatures, it can be stored for extended periods, but always check the expiration date on the label

Evacuate the area. Wear PPE. Contain the spill with inert material. Keep the substance wet with water. Do not clean up without specialist supervision

Use water spray, fog, dry chemical, or CO2. Do not use straight water streams. Cool containers with water from a distance

Specific exposure limits are not provided in the sources, but avoid inhalation and contact. Use local exhaust ventilation

It has an EINECS number (229-782-3), indicating it is listed in the European Inventory of Existing Commercial Chemical Substances

The HS code is 2909.60.00

The sources do not specify food-contact approval. Check local regulations and conduct compatibility tests before use.

It offers good thermal stability and is suitable for crosslinking and polymerization at moderate temperatures

It is not soluble in water, so pH is not applicable. It is an organic compound

It has a faint characteristic odor

The viscosity is approximately 35.5 mPa·s at 20°C

Information on biodegradability is not provided, but it is toxic to aquatic organisms, so prevent environmental release

The evaporation rate is not specified, but the low vapor pressure suggests slow evaporation

Synthesis details are not provided in the sources, but it is a diperoxide derivative of trimethylcyclohexane.

For inhalation: move to fresh air. For ingestion: do not induce vomiting; seek medical attention. For skin/eye contact: rinse thoroughly with water

The structure features a cyclohexane ring with two tert-butylperoxy groups at the 1-position and methyl groups at the 3,3,5-positions

The InChIKey is NALFRYPTRXKZPN-UHFFFAOYSA-N

The SMILES notation is O(C1(CC(C)CC(C)(C)C1)OOC(C)(C)C)OC(C)(C)C

The RTECS number is SD8600000

WGK Germany is 3, indicating highly water hazardous

Yes, it should be protected from sunlight

Packing Group II

Dispose of in accordance with local regulations. Consult a specialist. Do not dispose of in the environment

The melting point is -20°C, so it may freeze below that temperature

The sources do not specify medical use. Evaluate biocompatibility and regulatory requirements before consideration.

The density (specific gravity) is about 0.895-0.955 g/cm³

Commercial formulations may include stabilizers or solvents to reduce hazards. Check the SDS for details

An oral LD50 for rats is reported as 12918 mg/kg