Cu9S5

metal

· Cu9S5

Cu₉S₅ is a copper sulfide compound representing a stoichiometric phase in the Cu-S binary system, positioned between chalcocite (Cu₂S) and digenite (Cu₉S₅). This material is primarily of research and academic interest rather than a standard engineering alloy, studied for its electrical and thermal properties within the copper sulfide family, which has potential applications in semiconductor devices, thermoelectric systems, and solid-state chemistry investigations.

thermoelectric materials researchsemiconductor compoundsphase diagram studiescopper sulfide systemsmaterials science experimentationelectronic device development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	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.

Cu9S5

Electrical Properties

Regulatory Screening

Environmental

Export Control