Navigating the world of industrial chemicals requires a thorough understanding of their properties and associated risks. 4-Vinyl-1-cyclohexene (CAS 100-40-3) is a chemical compound that exemplifies this need, offering significant industrial utility while also presenting specific handling considerations. This article aims to provide a comprehensive overview of the key physical and chemical properties of 4-Vinyl-1-cyclohexene, as well as its essential safety and hazard classifications, drawing insights from the extensive product data available, often from sources that facilitate purchase and procurement, like NINGBO INNO PHARMCHEM CO.,LTD. Understanding these aspects is critical for any entity looking to source and utilize this compound effectively and safely.

Physically, 4-Vinyl-1-cyclohexene is described as a colorless liquid. Its molecular formula is C8H12, with a molecular weight of approximately 108.18 g/mol. Key physical properties include a boiling point around 126-127°C and a flash point of approximately 68°F (20°C), classifying it as a highly flammable liquid. Its density is about 0.832 g/mL at 25°C, and it has a relatively low water solubility. The vapor density is significantly higher than air (3.76 vs. 1), meaning its vapors can accumulate in low-lying areas, posing a fire or explosion risk. These characteristics inform its storage and handling requirements, emphasizing the need for well-ventilated areas and protection from ignition sources.

Chemically, 4-Vinyl-1-cyclohexene is a cyclic olefin. The presence of the vinyl group (-CH=CH2) makes it reactive and suitable for polymerization reactions, where it can act as a monomer. It is also a precursor for synthesizing other chemical derivatives, most notably vinylcyclohexene dioxide. The compound's reactivity means it can undergo oxidation in the presence of air, potentially forming hydroperoxides, which can increase instability. Therefore, precautions are often taken during storage and transportation, such as stabilization with compounds like BHT or TBC, to prevent unwanted reactions and maintain product integrity. The 4-vinyl-1-cyclohexene manufacturing processes are designed to manage this reactivity.

From a safety perspective, 4-Vinyl-1-cyclohexene carries significant hazard classifications. It is listed by the International Agency for Research on Cancer (IARC) as a Group 2B carcinogen, meaning it is possibly carcinogenic to humans. It is also classified as harmful to aquatic life with long-lasting effects. The GHS hazard statements include H225 (Highly Flammable liquid and vapour), H304 (May be fatal if swallowed and enters airways), H315 (Causes skin irritation), H351 (Suspected of causing cancer), H361 (Suspected of damaging fertility or the unborn child), and H412 (Harmful to aquatic life with long lasting effects). Consequently, strict precautionary measures are necessary when handling this compound. This includes obtaining special instructions before use, keeping it away from heat, sparks, open flames, and hot surfaces, and avoiding release to the environment. If ingested, it requires immediate medical attention.

For industrial users, understanding these 4-vinyl-1-cyclohexene properties and safety protocols is non-negotiable. Sourcing from reputable suppliers like NINGBO INNO PHARMCHEM CO.,LTD. ensures access to accurate safety data sheets (SDS) and technical information, facilitating compliance and safe operational practices. The careful management of its properties and hazards allows for its continued valuable contribution to various industrial applications.