Kaliumtetrahydroborat Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R14/15:Reagiert heftig mit Wasser unter Bildung hochentzündlicher Gase.
R24/25:Giftig bei Berührung mit der Haut und beim Verschlucken.
R34:Verursacht Ver?tzungen.
R11:Leichtentzündlich.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S43:Zum L?schen . . . (vom Hersteller anzugeben) verwenden (wenn Wasser die Gefahr erh?ht, anfügen: "Kein Wasser verwenden").
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S7/8:Beh?lter trocken und dicht geschlossen halten.
S16:Von Zündquellen fernhalten - Nicht rauchen.
Chemische Eigenschaften
White, crystalline powder. Stable
in moist and dry air, stable in vacuum to 500C,
decomposed by acids with evolution of hydrogen.
Partially soluble in water and ammonia; insoluble
in ethers and hydrocarbons.
Verwenden
Source of hydrogen, reducing agent for aldehydes, ketones, acid chlorides; foaming agent for plasticsPotassium borohydride is used as a selective reducing agent for ketones, aldehydes and acid chlorides. It is used as a precursor in the production of chloramphenicol, vitamin A, thiopenicol, atropine and scopolamine. It is used to prepare high dispersive copper nanoparticles by the chemical reduction method using potassium borohydride as a reducing agent.
Allgemeine Beschreibung
Potassium borohydride is a white crystalline or powdered solid. When exposed to water Potassium borohydride may react violently and start a fire. Potassium borohydride is toxic by ingestion. Potassium borohydride is used to make other chemicals.
Air & Water Reaktionen
Highly flammable. When exposed to water Potassium borohydride may react violently and start a fire. Produce flammable gases on contact with water. May ignite on contact with water or moist air.
Reaktivit?t anzeigen
A reducing agent. Reacts rapidly and dangerously with oxygen and with other oxidizing agents, even weak ones. Thus, they are likely to ignite on contact with alcohols. Hydrides are incompatible with acids, alcohols, amines, and aldehydes.
Hazard
Flammable, dangerous fire risk. Toxic by
ingestion.
Health Hazard
Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.
Brandgefahr
Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.
Sicherheitsprofil
Poison by ingestion.
Burns quietly in air. When heated to decomposition it emits toxic fumes of K2O.
See also BORON COMPOUNDS and
HYDRIDES.
l?uterung methode
Crystallise it from liquid ammonia. It is slowly hydrolysed by H2O. Its solubility at ~20o in H2O or liquid NH3 is 20%, in MeOH it is 0.7%, in Me2NCHO it is 15% and in MeOH/H2O (1:4) it is 13%. [Jons & Wallbridge Progr Inorg Chem 11 99-231 1970.]
Kaliumtetrahydroborat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
2-AMINO-3,5-DIBROMOBENZYL ALCOHOL
Hexahydrocyclopenta[c]pyrrol-2(1H)-aminmonohydrochlorid
alpha-Ethylbenzolmethanol
Diniconazole
Paclobutrazol W.P.
1-(2-CHLOROPHENYL)-2-BROMOETHANOL
N-Ethyl-alpha-methyl-3-(trifluor-methyl)benzolethanamin
Zopiclon
Estradiol
Nefopam
Clenbuterol
3-[1,1'-Biphenyl]-4-yl-1,2,3,4-tetrahydro-1-naphthol
3-(-Hydroxyphenethyl)-2-imino thiazolidine
Bromhexinhydrochlorid
Tropasure
Fluoxetine
1-(4-Chlorphenoxy)-3,3-dimethyl-1-(1H-1,2,4-triazol-1-yl)-butan-2-ol
Bromadiolon
21-Iodo-16-methylpregna-1,4,9(11)-trien-17-ol-3,20-dione
4-Hydroxy-3-(3-(4'-brom-4-biphenylyl)-1,2,3,4-tetrahydro-1-naphthyl)cumarin
Gliclazid
Paclobutrazol
Diclobutrazol
Methoxydienone
[1-Ethyl-1-phenyl-2-(3,4,5-trimethoxybenzoyloxy)ethyl]dimethylammoniumhydrogenmaleat
11β,17-Dihydroxypregna-1,4-dien-3,20-dion-17-propionat
3-(4'-Brom[1,1'-biphenyl]-4-yl)-1,2,3,4-tetrahydro-1-naphthol
13-Ethyl-3-methoxygona-2,5(10)-dien-17β-ol
Perhydroazocin
Diboran (6)
Ticlopidine
Terfenadin
Labetalol
A-(HYDROXYMETHYL)BENZENACETIC ACID METHYL ESTER
Lorcainide
1-[2-Hydroxy-2(2-thienyl)ethyl]pyridinium bromide
3-Nitrobenzylalkohol
Clorprenalin
17-Hydroxy-6-methylpregna-4,6-dien-3,20-dion-17-acetat
N-(4-Chlorphenyl)-1-isopropylpiperidin-4-amin
