K4 Na4 S4

semiconductor

· K4 Na4 S4

K₄Na₄S₄ is an experimental ionic sulfide compound containing potassium and sodium cations, belonging to the family of alkali metal polysulfides. This material exists primarily in research contexts for solid-state chemistry and materials science, where it is being investigated for its semiconducting properties and potential applications in energy storage and solid-state ion conductors.

solid-state battery researchionic conductor developmentsulfide-based semiconductorsenergy storage materialsmaterials science researchadvanced ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	4,065.8	ksi	—
Shear Modulus(G)	2,523.7	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.772	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.254	eV/atom	—

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.

K4 Na4 S4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control