Hg2Br2

semiconductor

· Hg2Br2

Hg₂Br₂ (mercury(I) bromide) is an ionic semiconductor compound belonging to the mercury halide family, characterized by mercury in the +1 oxidation state. Historically used in specialized optoelectronic and radiation detection applications due to its wide bandgap and photosensitive properties, though its use has declined significantly due to mercury's toxicity and environmental/health regulations. Research interest persists in niche areas such as X-ray and gamma-ray detection and specialized infrared applications, but practical deployment remains limited by material stability, hygroscopic behavior, and regulatory constraints that favor safer halide alternatives.

radiation detection (research)X-ray/gamma-ray sensors (legacy)infrared optics (experimental)historical optoelectronicshalide semiconductor research

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.600	eV	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Hg2Br2

Electrical Properties

Regulatory Screening

Environmental

Export Control