CAS database 13762-51-1 (CAS DataBase Reference)
NIST Chemical Information Potassium tetrahydroborate (13762-51-1)
Potassium borohydride use and synthesis methods
Toxicity See sodium borohydride.
Chemical properties White loose powder or crystal. The relative density of 1.178. Stable in air, no hygroscopicity. Dissolved in water and slowly decomposed to release hydrogen. Soluble in liquid ammonia, slightly soluble in methanol and ethanol, almost insoluble in ether, benzene, tetrahydrofuran, methyl ether and other hydrocarbons. In the alkaline environment stability, case of inorganic acid decomposition and release of hydrogen. Decompose at about 500 ° C in vacuum.
Use for the organic selective groups of the reduction reaction; as aldehydes, ketones and acid chloride reductant, can the organic functional groups RCHO, RCOR, RCOCl reduced to RCH2, CHR2, HOHR, RCH2OH, etc .; also used for analysis Chemical, paper industry, mercury-containing wastewater treatment and synthetic cellulose potassium.
Use for pharmaceutical, cellulose modifier, pulp bleaching and so on.
Use as a reducing agent for aldehydes, ketones and acid chlorides.
Use of reductants for aldehydes, ketones and acyl chlorides, reduction, purification and removal of carbonyl and peroxy compounds in organic chemical products in color, odor and oxidation of the matrix, photographic and metal finishing industry in the pollution control and precious metals Recycling, manufacture of pharmaceuticals and fine chemicals and preparation of catalysts. Solubility (g / 100g): water 19 (25 ° C), liquid ammonia 20 (25 ° C), ethylenediamine 3.9 (75 ° C), methanol 0.7 (20 ° C), dimethylformamide 15 (20 ° C).
Use as a reducing agent for aldehydes, ketones and acid chlorides for pharmaceuticals, cellulose modification, pulp bleaching, etc.
Production method Sodium borohydride method by sodium hydride methyl ester method of sodium borohydride alkaline solution (that is, hydrolysis process of the hydrolysis solution), and then measured into the crystallization tank, stirring heated to 60 ℃, and by adding hydroxide Potassium was incubated for 1 h; then cooled and allowed to stand for 12 h. After centrifugation, the crystals were washed with ethanol and dried at 80 ° C for 16 h to prepare potassium borohydride. its
H3BO3 + 3CH3OH → B (OCH3) 3 + 3H2O
Na + H2 → 2NaH
4NaH + B (OCH3) 3 → NaBH4 + 3CH3ONa
NaBH4 + KOH → KBH4 + NaOH
◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆◆.......
Wuhan, Wuhan factory direct
The stock is inexpensive
Order Method:
1, if you order a package (a package in general 25kg), free shipping (for tickets, please pass the billing information);
2, the arrival date: small items company generally choose rhyme delivery, large cargo generally take the logistics, no special circumstances to 3 days delivery;
3, quality and cheap, welcome to order, a large quantity Congyou
4, other services: If you have products that need to understand the welcome you at any time to contact.
Service Mission: dedication to provide quality products, you worry-free after-sales.
Contact Person:Mr.Wu
Contact Number:027-88216882
QQ:2850515726
Far into the group, you are welcome to inquire !!!
#################################################################################################### #######
