HgAu

metal

· JVASP-124323· HgAu

HgAu is a mercury-gold alloy that combines the properties of two highly dense, noble metals. While not widely used in mainstream engineering, this alloy has historical significance in dental amalgams and specialized laboratory applications where its unique combination of high density, corrosion resistance, and workability at room temperature may be advantageous. Engineers considering this material should note that mercury-containing alloys face increasing regulatory restrictions in many jurisdictions due to health and environmental concerns, making alternatives the preferred choice for most modern applications.

historical dental amalgamshigh-density specialty alloyslaboratory/research applicationscorrosion-resistant coatings (legacy use)noble metal research compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.5662	lb/in³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.2231	eV/atom	—
Formation Energy(ΔHf)	0.2231	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.

HgAu

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control