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| CAS No.: | 7693-26-7 |
|---|---|
| Name: | Potassium hydride |
| Article Data: | 4 |
| Molecular Structure: | |
|
|
|
| Formula: | HK |
| Molecular Weight: | 40.1062 |
| Synonyms: | Potassiumhydride (8CI); Potassium monohydride |
| Density: | 1.45 |
| Melting Point: | decomposes [CRC10] |
| Boiling Point: | 316oC |
| Flash Point: | 113oC |
| Solubility: | decomposed by H2O [CRC10] |
| Hazard Symbols: |
 F C
|
| Risk Codes: | R11;R14/15;R34; |
| Safety: | Dangerous fire hazard by chemical reaction. Ignites spontaneously in air. Moderate explosion hazard when exposed to heat or by chemical reaction. Will react with water, steam, or acids to produce H2 which then ignites. Can react vigorously with oxidizing materials. To fight fire, use CO2, dry chemical. Potentially explosive reactions with o-2,4-dinitrophenylhydroxylamine, fluoroalkenes. Ignites on contact with air, oxygen + moisture, fluorine. Incompatible with Cl2, acetic acid, acrolein, acrylonitrile, (CaC + Cl2), ClO2, (H2O2 + Cl2), (CHFl3 + CH3OH), 1,2-dichloroethylene, maleic anhydride, (n-methyl-n-nitrosourea + CH2Cl2), nitroethane, NCl3, nitromethane, nitroparaffins, o-nitrophenol, nitropropane, n-nitrosomethylurea, (nitrosomethylurea + CH2Cl2), H2O, trichloroethylene, tetrahydrofuran, tetrachlorethane. When heated to decomposition it emits highly toxic fumes of K2O. See also POTASSIUM and HYDRIDES. |
| PSA: | 0.00000 |
| LogP: | 0.00000 |
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| Conditions | Yield |
|---|---|
| In neat (no solvent) byproducts: H; Irradiation (UV/VIS); mixt. irradiation by frequency doubled and tripled Nd:YAG laser (404.4nm, 30 Hz, 300 μJ/pulse, oven temp. 500 K), according to P. D. Kleib er et al., J. Chem. Phys. 85 (1986) 5493; detection by LIF technique; | |
| In neat (no solvent) using a six-armed heat pipe to deposit K metal, heating K metal in the oven (500 K, 100 mTorr), evacuating (to 1E-5 Torr prior introduction of H2) flowing H2 slowly through the chamber (< 5 Torr); | |
| In neat (no solvent, gas phase) potassium was placed in the cell-furnace and subjected to vacuum extn. and slight heating; hydrogen was introduced at 10-20 torr; the cell was kept at 700 K;; | |
| In neat (no solvent) production of hydride on discharge (2400 MHz, 150 mA, p(H2) = 1 Torr); |
| Conditions | Yield |
|---|---|
| In diethyl ether byproducts: LiH; Ga-complex soln. treating with excess K-compd. (three-necked flask, roomtemp., stirring, 3 h), soln. decantation; ppt. washing (ether), treatment with diglyme, crystn. on soln. vac. evapn. (80°C), crystals washing (ether), vac. drying (90°C, 2 h); elem. anal.; | 91% |
- 7693-26-7
potassium hydride
- 210818-37-4
(C6H5)2Sn(CH2C(OH)(CF3)2)2
| Conditions | Yield |
|---|---|
| In tetrahydrofuran room temp., 2 d; |
- Total:9 Page 1 of 1 1
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Chemistry
IUPAC Name: Potassium hydride
Synonyms: Potassium hydride ; KH ; Potassium hydride (KH) ; Potassiumhydride(KH) ; Potassiumhydrideinoilslurrygraypowder ; Potassium hydride, ~35% dispersion in mi neral oil ; Potassium hydride, 30 wt. % dispersion i n mineral oil ; Potassium hydride, 20-25% in oil
Product Categories: Materials for Hydrogen Storage;Metal Hydrides;Metal HydridesAlternative Energy;Reduction;Synthetic Reagents
CAS NO: 7693-26-7
Molecular Formula:: KH
Molecular Weight: 40.1062
Molecular Structure:
EINECS: 231-704-8
Boiling Point: 316 °C
Density 1.54
Flash Point: 113 °C
Storage temp: Flammables + water-Freezer (-20°C)e area
Sensitive: Potassium hydride (CAS NO.7693-26-7) is moisture sensitive.
Appearance: Potassium hydride (CAS NO.7693-26-7) is dispersion of tan powder in mineral oil
Uses
Potassium hydride (CAS NO.7693-26-7) is used for the condensation agent and alkyl agent in organic synthesis .
Safety Profile
Dangerous fire hazard by chemical reaction. Ignites spontaneously in air. Moderate explosion hazard when exposed to heat or by chemical reaction. Will react with water, steam, or acids to produce H2 which then ignites. Can react vigorously with oxidizing materials. To fight fire, use CO2, dry chemical. Potentially explosive reactions with o-2,4-dinitrophenylhydroxylamine, fluoroalkenes. Ignites on contact with air, oxygen + moisture, fluorine. Incompatible with Cl2, acetic acid, acrolein, acrylonitrile, (CaC + Cl2), ClO2, (H2O2 + Cl2), (CHFl3 + CH3OH), 1,2-dichloroethylene, maleic anhydride, (n-methyl-n-nitrosourea + CH2Cl2), nitroethane, NCl3, nitromethane, nitroparaffins, o-nitrophenol, nitropropane, n-nitrosomethylurea, (nitrosomethylurea + CH2Cl2), H2O, trichloroethylene, tetrahydrofuran, tetrachlorethane. When heated to decomposition it emits highly toxic fumes of K2O. See also POTASSIUM and HYDRIDES.
Hazard Codes 
F,
C
Risk Statements 11-14/15-34
R11:Highly flammable.
R14/15: Reacts violently with water, liberating extremely flammable gases
R34:Causes burns.
Safety Statements 16-26-27-36/37/39-45
S16:Keep away from sources of ignition.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S27:Take off immediately all contaminated clothing.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR UN 1409 4.3/PG 1
WGK Germany 3
HazardClass 4.3
PackingGroup I