Tetrabromoethane, with the molecular formula C2H2Br4 and CAS number 25167-20-8, is a fascinating compound whose chemical structure directly dictates its notable physical properties, particularly its high density. Understanding this chemistry is key to appreciating its industrial applications.

The molecule consists of a two-carbon ethane backbone, with each carbon atom bonded to two bromine atoms. This heavy halogen substitution is the primary reason for its exceptionally high density, which is approximately 2.967 g/mL at 25°C. To put this into perspective, it is nearly three times denser than water. This extreme density is a critical factor in its utility for gravity separation processes, where it allows for the effective separation of materials with differing specific gravities.

The presence of four heavy bromine atoms also influences its chemical reactivity. As mentioned previously, tetrabromoethane can act as a photo-acid generating material (PAG) in photolithography. Under exposure to UV light, the carbon-bromine bonds can break, leading to the release of acidic species. This photochemical reactivity is a hallmark of many halogenated organic compounds and is harnessed in specialized chemical applications.

From a chemical standpoint, tetrabromoethane is classified as a halogenated alkane. Its stability and reactivity are well-documented, and suppliers like NINGBO INNO PHARMCHEM CO.,LTD. provide detailed chemical information, including boiling points and solubility data, to aid users. When considering its purchase, understanding these chemical properties ensures it is suited for the intended application, whether it's for precise mineral sorting or as a component in advanced electronic chemicals. The scientific exploration of compounds like tetrabromoethane continues to reveal new possibilities and refine existing technologies.