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CAS No.: | 7646-93-7 |
---|---|
Name: | Potassium bisulfate |
Article Data: | 148 |
Molecular Structure: | |
Formula: | KHSO4 |
Molecular Weight: | 136.17 |
Synonyms: | Sulfuricacid, monopotassium salt (8CI,9CI);Acid potassium sulfate;Hydrogen potassiumsulfate;Monopotassium sulfate;Potassium acid sulfate;Potassium bisulfate;Potassium bisulphate;Potassium hydrogen sulfate;Potassium sulfate (KHSO4);Sal enixum; |
EINECS: | 231-594-1 |
Density: | 2.322 g/cm3 |
Melting Point: | 214 °C(lit.) |
Boiling Point: | 330 °C at 760 mmHg |
Solubility: | H2O: 1 M at 20 °C, clear, colorless |
Appearance: | white deliquescent crystals |
Hazard Symbols: | C |
Risk Codes: | 34-37 |
Safety: | 26-36/37/39-45 |
Transport Information: | UN 2509 8/PG 2 |
PSA: | 85.81000 |
LogP: | 0.08540 |
potassium hydrogensulfate
Conditions | Yield |
---|---|
In water byproducts: O2; complete decompn. at room temp. in 3 months; decompn. faster at higher temp.; | 99% |
In water byproducts: O2; complete decompn. at room temp. in 3 months; decompn. faster at higher temp.; | 99% |
With water In sulfuric acid byproducts: O2; react. rate in relation to H2SO4 conc.; |
sulfuric acid
water
A
potassium hydrogensulfate
B
dihydrogen peroxide
Conditions | Yield |
---|---|
In sulfuric acid hydrolysis by heating; simultaneous distn. (by H2O vapor);; distn.; 40-60% aq. soln. of H2O2;; | A n/a B 95% |
In sulfuric acid aq. H2SO4; hydrolysis by heating; simultaneous distn. (by H2O vapor);; distn.; 40-60% aq. soln. of H2O2;; | A n/a B 95% |
In sulfuric acid hydrolysis by heating; simultaneous distn. (by H2O vapor);; distn.;; | A n/a B 92% |
sulfuric acid
water
A
potassium hydrogensulfate
B
dihydrogen peroxide
C
oxygen
D
ozone
Conditions | Yield |
---|---|
In water investigations within the system K2S2O8-H2SO4-H2O at 100 °C, formation of O3 at higher concentrations of H2SO4, mechanism discussed;; |
Conditions | Yield |
---|---|
In sulfuric acid 50-55°C;; 30% aq. soln. of H2O2;; | |
In sulfuric acid aq. H2SO4; 50-55°C;; 30% aq. soln. of H2O2;; |
Conditions | Yield |
---|---|
With sulfuric acid byproducts: SO2, I2; with great amount of concd. H2SO4; | |
With sulfuric acid byproducts: H2S, H2O; with concd. H2SO4; | |
With H2SO4 |
Conditions | Yield |
---|---|
80 °C; cooling to 20 °C; | |
80 °C; cooling to 20 °C; |
Conditions | Yield |
---|---|
With sulfuric acid distn. with concd. H2SO4; | |
With H2SO4 distn. with concd. H2SO4; |
Conditions | Yield |
---|---|
condensation,distn.; |
Conditions | Yield |
---|---|
With hydrogenchloride In water products pptd. from the cooled soln.;; | |
With HCl In water products pptd. from the cooled soln.;; |
potassium hydrogensulfate
Conditions | Yield |
---|---|
With hydrogenchloride In water satd. soln. of neutral sulfate is distd. with aq. HCl;; | |
With sulfuric acid In melt equiv.; | |
With sulfuric acid In water equiv. ; in soln. of HCl; |
Reported in EPA TSCA Inventory.
DOT Classification: 8; Label: Corrosive
The Potassium bisulfate is the potassium salt of bisulfate anion, with the molecular formula KHSO4. It belongs to the product categories of Inorganics; Inorganic Salts; Potassium; Synthetic Reagents. Its EINECS registry number is 231-594-1. With the CAS registry number 7646-93-7, its IUPAC name is called potassium hydrogen sulfate.
Physical properties of Potassium bisulfate: (1)ACD/LogP: -1.03; (2)ACD/LogD (pH 5.5): -5.53; (3)ACD/LogD (pH 7.4): -5.53; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)#H bond acceptors: 4; (7)#H bond donors: 2; (8)Enthalpy of Vaporization: 62.94 kJ/mol; (9)Boiling Point: 330 °C at 760 mmHg; (10)Vapour Pressure: 3.35E-05 mmHg at 25°C.
Preparation: this chemical can be prepared by K2CO3 and H2SO4. The reaction is as the following:
K2CO3 + H2SO4 → K2SO4↓+CO2↑+H2O
Uses of Potassium bisulfate: This compound is commonly used in the conversion of tartrates to bitartrates in wine. Potassium bisulfate is also used as a disintegrating agent in analytical chemistry.
When you are using this chemical, please be cautious about it as the following:
This chemical may destroy living tissue on contact and may cause burns. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell seek medical advice immediately (show the label where possible).
You can still convert the following datas into molecular structure:
(1)Canonical SMILES: OS(=O)(=O)[O-].[K+]
(2)InChI: InChI=1S/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1
(3)InChIKey: CHKVPAROMQMJNQ-UHFFFAOYSA-M
The toxicity data is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
rat | LD50 | oral | 2340mg/kg (2340mg/kg) | Personal Communication from J.V. Marhold, VUOS, 539-18, Pardubice, Czechoslavakia, Mar. 29, 1977Vol. 29MAR1977, |