Name | Potassium borohydride |
Synonyms | KBH K[BH4] Kaliumborhydrid Potassium borohydride borohydruredepotassium Kaliumtetrahydridoborat Borohydrure de potassium potassium boron(-1) anion potassium tetrahydroborate Potassium tetrahydridoborate Borate(1-),tetrahydro-,potassium Borate(1-), tetrahydro-, potassium |
CAS | 13762-51-1 |
EINECS | 237-360-5 |
InChI | InChI=1/BH5.K/h1H5;/q-1;+1 |
InChIKey | ICRGAIPBTSPUEX-UHFFFAOYSA-N |
Molecular Formula | BH4K |
Molar Mass | 53.94 |
Density | 1.18 g/mL at 25 °C (lit.) |
Melting Point | 500 °C (dec.) (lit.) |
Water Solubility | 190 g/L (25 ºC) |
Appearance | Powder |
Specific Gravity | 1.178 |
Color | White |
Merck | 14,7616 |
Storage Condition | water-free area |
Sensitive | Moisture Sensitive |
Refractive Index | 1.494 |
Physical and Chemical Properties | White crystals or slightly gray-yellow crystalline powder. Density 1.178g/cm3. Slightly hygroscopic in air, unstable. Dissolve in water, slowly release hydrogen. Soluble in liquid ammonia, amines, methanol-soluble, ethanol, insoluble in ether, benzene, Tetrahydrofuran, methyl ether and other hydrocarbons. It can be decomposed by acid to release hydrogen. Stable in base. Decomposition at about 500 °c in vacuum. |
Use | It is used as a reducing agent for aldehydes, ketones and acid chlorides, etc. It is used as a reducing agent for Analytical Chemistry, pesticides, paper industry and other fine chemical products, and can also be used for the treatment of mercury-containing wastewater, etc. |
Risk Codes | R14/15 - R24/25 - R34 - Causes burns R11 - Highly Flammable |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S43 - In case of fire use ... (there follows the type of fire-fighting equipment to be used.) S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S7/8 - S28A - S16 - Keep away from sources of ignition. |
UN IDs | UN 1870 4.3/PG 1 |
WGK Germany | - |
RTECS | TS7525000 |
FLUKA BRAND F CODES | 10 |
TSCA | Yes |
HS Code | 2850 00 20 |
Hazard Class | 4.3 |
Packing Group | I |
Toxicity | LD50 orally in Rabbit: 167 mg/kg LD50 dermal Rabbit 230 mg/kg |
Raw Materials | Methyl alcohol Orthoboric acid Hydrogen |
Downstream Products | Diniconazole Paclobutrazol Bromoadiolone Gliclazide Labetalol bromohexine hydrochloride trimebutine maleate |
White loose powder or crystals. The relative density was 1. 178. Melting point 585 ° C, about 500 ° C in vacuum began to decompose, stable in air, not hygroscopic. Potassium borohydride is readily soluble in water, and hydrogen is completely released when the aqueous solution is heated to 1000 °c. Soluble in liquid ammonia, slightly soluble in methanol and ethanol, almost insoluble in ether, benzene, Tetrahydrofuran, methyl ether and other hydrocarbons. Stable in alkaline environment, when inorganic acid decomposition and release of hydrogen.
Sodium Borohydride method: firstly, Sodium Borohydride alkaline solution (I. E., the hydrolysis solution obtained from the hydrolysis process) is prepared by sodium borohydride methyl borate method, and then it is metered into a crystallization tank and heated to 60 ° C under stirring, potassium hydroxide was added and incubated for 1H; Followed by cooling and rest for 12H; After centrifugation, the crystals were washed with ethanol and dried at 80 ° C. For 16h to obtain a finished potassium borohydride product.
for the reduction of organic selective groups; Used as a reducing agent for aldehydes, ketones and acid chlorides, can reduce the organic functional groups RCHO, RCOR, RCOCI to RCH2, CHR2, HOHR, RCH2 0H; Also used in analytical chemistry, paper industry, mercury containing wastewater treatment and synthesis of cellulose potassium.
packed in an iron drum lined with a polyethylene bag or a kraft paper bag. 5kg or 10kg net per barrel. One wooden case in each of two iron barrels. Should be stored in a cool, dry warehouse. Avoid breaking up and absorbing moisture. Do not store and transport with inorganic acid, Isolation heat source and fire and flammable articles. When there is a fire, it can be suppressed by sand and carbon dioxide fire. It belongs to Class II water burning articles. Risk code: GB Class 4.3 43045. UN N0.1870; IMDG code 4.3, Class 3. See sodium borohydride.