BORON PHOSPHIDE

BORON PHOSPHIDE Property

solubility 

reacts with H2O, acid solutions

form 

red cubic crystals or powder

color 

Red

Water Solubility 

reacts with H2O and acids, releasing toxic fumes [HAW93]

Crystal Structure

Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc

Knoop Microhardness

37000, N/mm2

EPA Substance Registry System

Boron phosphide (BP) (20205-91-8)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H260In contact with water releases flammable gases which may ignite spontaneously

H301Toxic if swalloed

Precautionary statements

P223Keep away from any possible contact with water, because of violent reaction and possible flash fire.

P231+P232Handle under inert gas. Protect from moisture.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P321Specific treatment (see … on this label).

P330Rinse mouth.

P335+P334Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages.

P370+P378In case of fire: Use … for extinction.

P402+P404Store in a dry place. Store in a closed container.

P405Store locked up.

P501Dispose of contents/container to..…

BORON PHOSPHIDE Chemical Properties,Usage,Production

Uses

Boron phosphide is used in research on optical absorption and as an ultrahard inorganic material.

Application

Studies have shown that boron phosphide films exhibit excellent light transmittance over a wide wavelength range and possess the best rain erosion resistance among similar films, maximizing the improvement of the damage threshold velocity (DTV) of the substrate. Compared to germanium carbide, boron phosphide exhibits superior mechanical properties, with a Knoop hardness of 47 GPa, more than twice that of sapphire, and an elastic modulus as high as 270 GPa, the highest among all binary covalent compounds with a zincblende structure. Compared to diamond, boron phosphide thin films demonstrate better adhesion, facilitating large-area deposition. Compared to DLC, boron phosphide exhibits lower internal stress, adheres well to various substrate materials, and has no limitations on film thickness. Therefore, boron phosphide is a preferred material for antireflective protective films for infrared windows resistant to high-speed flight.

Chemical Properties

maroon powder(s); -100 mesh at 97.5% purity; refractory; hardness 9.5 Mohs; band gap 2.0eV (300K); material with formula B13P2[12008-82-1] is -325 mesh, 10μm or less of 99% purity [HAW93] [CER91] [KIR82]