KAlH4 — Properties & Data | MatWorld

KAlH4

metal

· JVASP-30990· KAlH4

Potassium aluminum hydride (KAlH₄) is an ionic metal hydride compound primarily investigated as a hydrogen storage material and chemical reducing agent in laboratory and industrial synthesis applications. This material belongs to the complex metal hydride family and is valued in materials research for its high hydrogen content and reactivity, though it remains largely experimental outside specialized chemical and energy storage research contexts. Engineers encounter KAlH₄ in hydrogen economy development, advanced manufacturing, and pharmaceutical/fine chemical synthesis where controlled reduction reactions are required.

hydrogen storage systemschemical reducing agentpharmaceutical synthesismaterials researchadvanced energy storagespecialized chemical processing

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	1,975.4	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2600	-	DFT · OptB88vdW
Shear Modulus(G)	1,237.2	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.04646	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	5.056	eV	DFT · OptB88vdW
↳	6.846	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.855	-	DFT · OptB88vdW
↳	2.198	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.9333	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.530	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000815	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00111	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-209.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	358.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3098	eV/atom	DFT · OptB88vdW

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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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.

KAlH4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

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