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Pentaborane

Pentaborane Basic information
Product Name:Pentaborane
Synonyms:Pentaborane;pentaborane(9);(2,3-Muh),(2,5-muh),(3,4-muh),(4,5-muh)-nido-pentaborane(9);2,3:2,5:3,4:4,5-Tetra-muh-nido-pentaborane(9);Chebi:33591;Nido-pentaborane(9)
CAS:19624-22-7
MF:C14H14NO4PS
MW:323.304021
EINECS:243-194-4
Product Categories:
Mol File:19624-22-7.mol
Pentaborane Structure
Pentaborane Chemical Properties
Melting point -46.6°
Boiling point bp 60°
density d40 0.61
form flammable liquid
Water Solubility hydrolyzed if heated [COT88]
CAS DataBase Reference19624-22-7
Safety Information
RIDADR 1380
HazardClass 4.2
PackingGroup I
MSDS Information
Pentaborane Usage And Synthesis
Chemical PropertiesPentaborane is a colorless, volatile liquid. Unpleasant, sweetish odor, like sour milk. The Odor Threshold is 0.8 ppm.
General DescriptionA clear colorless liquid with a pungent odor like sour milk, and flammable.It is corrosive to natural rubber, some synthetic rubber, some greases, and some lubricants and gives off irritating or toxic fumes (or gases) in a fire. It reacts violently with fire. Pentaboron nonahydride incompatible with strong oxidants such as chromium anhydride, chlorate and potassium permanganate, and other contacts. Vapors toxic both under prolonged exposure to low concentrations and short exposure to high concentrations. Density 0.61 g / cm3. Under prolonged exposure to intense heat the containers may rupture violently and rocket.
Air & Water ReactionsHighly flammable. May ignite spontaneously in air [Merck 11th ed. 1989]. Slowly decomposes in water.
Reactivity ProfilePentaborane is an extremely reactive reducing agent. Can ignite spontaneously in contact with air and many other materials. Reactions with oxygen are often violently explosive. Reacts with ammonia to form a diammoniate. Is stabilized by the formation of complexes with N, O, P, or S. Is stable in hydrocarbon solvents, but forms shock sensitive solutions in most carbonyl containing solvents.
Health HazardMay cause death or permanent injury after very short exposure to small quantities.
Fire HazardIgnites spontaneously in air. Reacts violently with halogenated extinguishing agents. Boron hydrides present considerable fire and explosion hazard. They undergo explosive reaction with most oxidizing agents, including halogenated hydrocarbons. Fires tend to reignite. On decomposition, Pentaborane emits toxic fumes and can react vigorously with oxidizing materials. Avoid dimethyl sulfoxide, water, most oxidizing agents (including halogenated hydrocarbons). Avoid direct sunlight and sources of ignition, decomposes very slowly at 302. Hazardous polymerization may not occur.
Safety ProfilePoison by inhalation and intraperitoneal routes. Dangerous fire hazard by chemical reaction; spontaneously flammable in air. Dangerous explosion hazard. To fight fire, use special fire-fighting materials; water is not effective; reacts violently with halogenated extinguishing agents. Get instructions from supplier. Explosive reaction with oxygen. Forms shock-sensitive solutions in solvents containing carbonyl, ether, or ester functions; or halogens. Incompatible with dimethyl sulfoxide. Upon decomposition it emits toxic fumes of B. See also BORANES and BORON COMPOUNDS
Potential ExposurePentaborane is used in rocket propellants and in gasoline additives.
ShippingUN1380 Pentaborane, Hazard Class: 4.2; Labels: 4.2-Spontaneously combustible material, 6.1-Poisonous materials. Inhalation Hazard Zone A.
IncompatibilitiesPentaborane is an extremely reactive reducing agent. It can ignite spontaneously in contact with air and many other materials. Reactions with oxygen are often violently explosive. Reacts with ammonia to form a diammoniate. Reacts on contact with water, oxidizers, halogens, including halogenated hydrocarbons. May sel-heat and ignite spontaneously in moist air, decomposes @ 150C. Hydrolyzes slowly with heat in water to form boric acid. Contact with solvents, such as ketones, ethers and esters form shock-sensitive compounds. Pentaborane is stable in hydrocarbon solvents, but forms shock sensitive solutions in most carbonyl containing solvents. Corrosive to natural rubber, some synthetic rubbers and to some lubricants. Avoid dimethyl sulfoxide, direct sunlight and sources of ignition.
Waste DisposalIncineration with aqueous scrubbing of exhaust gases to remove B2O3 particulates.
Pentaborane Preparation Products And Raw materials
Tag:Pentaborane(19624-22-7) Related Product Information
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