B5H9

Name: B5H9
Brand: MatWorld

ceramic

· JVASP-33315· B5H9

B5H9 (pentaborane-9) is a boron hydride compound belonging to the class of electron-deficient cage molecules. This material is primarily of interest in aerospace and energetic applications research, where boron hydrides are investigated as high-energy-density fuels and propellant additives due to their exceptional hydrogen content and exothermic combustion characteristics. While not widely commercialized in conventional engineering, B5H9 represents an important compound within boron hydride chemistry for advanced propulsion systems and specialized chemical synthesis.

high-energy propellantsaerospace fuel researchboron chemistry synthesisadvanced rocket propulsionexperimental energetic materialslaboratory chemistry

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.02966	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	5.505	eV	DFT · OptB88vdW
↳	6.756	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	2.863	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.939	-	DFT · OptB88vdW
↳	2.461	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.08021	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00123	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000970	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-236.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	404	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)	0.00310	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.02945	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

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.

B5H9 — Properties & Data | MatWorld

B5H9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental