Potassium hydride
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Basic information
- CAS
7693-26-7- Standard SMILES
[H-].[K+]- InChIKey
OCFVSFVLVRNXFJ-UHFFFAOYSA-N- Molecular formula
- HK
- Average molar mass
- 40.1063 g/mol
Overview
Potassium hydride is an alkali metal hydride.
Names & identifiers
- Preferred name
- Potassium hydride
- IUPAC
- potassium hydride
- English name
- Potassium hydride
- Molecular formula
- HK
- Molecular weight
- 40.11
Names & synonyms
PotassiumhydridePotassium hydride7693-26-7potassium;hydridePotassium hydride (KH)KaliumhydridSCHEMBL266SCHEMBL3334[KH]CHEBI:32589DTXSID10894770CS0062
Show more names
KHHK-9PotassiuM hydridpotassiumhydride(kh)Potassium monohydrideHydrogen potassium saltPotassiumhydride,30-35%inoilPotassiuM hydride in paraffin
MFCD00011357AKOS015833247Q6036
Database identifiers
- CAS
7693-26-7- PubChem CID
- 82127
- ChEBI
CHEBI:32589
Properties
Computed structural propertiesFilling in
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 1
- Rotatable bonds
- 0
- Heavy atoms
- 1
- Formal charge
- 0
- Complexity
- 0
Physicochemical properties
- Melting point
- 10 · decomposes [CRC10]
- Boiling point
- 316 °C · 316 °C
- Density
- 1.54 · 1.54
- Flash point
- 113 °C · 113 °C
- storage temp.
- Flammables + water-Freezer (-20°C)e area
- solubility
- Insoluble in benzene, diethyl ether and carbon disulfide.
- form
- dispersion (in mineral oil (~35%))
- color
- Grayish beige
- Water Solubility
- 2 O · decomposed by H2O [CRC10]
- Sensitive
- Moisture Sensitive
- InChI
- 1S/K.H
- InChIKey
- NTTOTNSKUYCDAV-UHFFFAOYSA-N
- SMILES
- [K]
- EPA Substance Registry System
- Potassium hydride (KH) (7693-26-7)
- UNSPSC Code
- 12352302 · 12352302
- NACRES
- 22 · NA.22
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
Safety data
- PPE
- Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
- wgk
- 3
- tsca
- TSCA listed
- ridadr
- UN 1409 4.3/PG 1
- hs_code
- 28500090
- risk_code
- 11-14/15-34
- Signal word
- Danger
- Symbol(GHS)
- GHS02,GHS05
- hazard_code
- F,C
- safety_code
- 16-26-27-36/37/39-45-43
- hazard_class
- 4.3
- Storage Class
- 4.3 - Hazardous materials which set free flammable gases upon contact with water
- packing_group
- I
- Hazard statements
- H260-H314
- Excepted Quantities
- Not Permitted as Excepted Quantity
- Hazard Classifications
- Eye Dam. 1Skin Corr. 1BWater-react 1
- Autoignition Temperature
- Ignites spontaneously at room temperature in moist air
- Precautionary statements
- P223-P231+P232-P280-P260-P264-P370+P378-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P305+P351+P338-P402+P404-P405-P501
Chemistry & industry
Applications
UsesOrganic condensations and alkylations.
UsesIt is used as a strong reducing agent and inmaking super bases RNHK and ROK(whereRis an alkyl group) (Sullivan andWade 1980).It is sold as 35 wt% dispersion in mineral oil.
UsesPotassium Hydride is used in preparation of Hydroxy-Xanthone derivatives via Isoprenylation followed by Claisen rearrangement starting from Fluoroxanthone derivatives.
General DescriptionThis product has been enhanced for energy efficiency.
Preparation methods
PreparationPreparation of a dipyrazolylborate -K[(C3N2H3)2BC8H14]. [(C3N2H3)2BC8H14]－ (abbreviated as Pz2BBN) is a bidentate ligand used to prepare catalysts with hydrogen-bonding capabilities, and has potential applications. However, the currently reported methods for preparing this ligand are not easy to industrialize. Therefore, developing a method that is easy to industrialize is of great significance for further expanding the application of this ligand. The key points of the technical solution are: under anhydrous and oxygen-free conditions, 9-boron bicyclic [3.3.1]nonane dimer, potassium hydride, and pyrazole are reacted under stirring and reflux in anhydrous toluene or anhydrous tetrahydrofuran to prepare dipyrazolylborate -K[(C3N2H3)2BC8H14]. Using 9-boronbicyclo[3.3.1]nonane dimer, pyrazole, and potassium hydride as raw materials, dipyrazolyl borate -K[(C3N2H3)2BC8H14] was prepared by a one-step synthesis method. The role of H- is the same as that of OH- reported in the literature, but the product after combination with H+ is H2 instead of H2O, thus eliminating the need for dehydration. Furthermore, this invention also features short reaction time, fewer types of solvents required that can be recycled and reused, simple method, high product purity, low production cost, and ease of large-scale production.
Upstream & downstream products
Upstream raw materials
Related reactions
365 records
Compound notes
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