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Potassium bisulfate information


Potassium bisulfate
One potassium cation and one hydrogensulfate anion
Ball-and-stick model of the component ions
Potassium bisulfate crystals on filter paper
Names
IUPAC name
Potassium hydrogen sulfate
Other names
Potassium acid sulfate
Identifiers
CAS Number
  • 7646-93-7 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 56396 checkY
ECHA InfoCard 100.028.722 Edit this at Wikidata
EC Number
  • 231-594-1
E number E515(ii) (acidity regulators, ...)
PubChem CID
  • 516920
RTECS number
  • TS7200000
UNII
  • 1J1K03241F checkY
UN number 2509
CompTox Dashboard (EPA)
  • DTXSID8047715 Edit this at Wikidata
InChI
  • InChI=1S/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1 ☒N
    Key: CHKVPAROMQMJNQ-UHFFFAOYSA-M ☒N
  • InChI=1/K.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+1;/p-1
    Key: CHKVPAROMQMJNQ-REWHXWOFAH
SMILES
  • OS(=O)(=O)[O-].[K+]
Properties
Chemical formula
KHSO4
Molar mass 136.169 g/mol
Appearance colorless solid
Odor odorless
Density 2.245 g/cm3
Melting point 197 °C (387 °F; 470 K)
Boiling point 300 °C (572 °F; 573 K) (decomposes to form potassium pyrosulfate and water)
Solubility in water
36.6 g/100 mL (0 °C)
49 g/100 mL (20 °C)
121.6 g/100 mL (100 °C)
Solubility soluble in acetone, ethanol.
Magnetic susceptibility (χ)
−49.8·10−6 cm3/mol
Thermochemistry
Std enthalpy of
formation fH298)
-1163.3 kJ/mol
Hazards
GHS labelling:
Pictograms
GHS05: CorrosiveGHS07: Exclamation mark
Signal word
Danger
Hazard statements
H314, H335
Precautionary statements
P260, P261, P264, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P363, P403+P233, P405, P501
Lethal dose or concentration (LD, LC):
LD50 (median dose)
2340 mg*kg−1
Safety data sheet (SDS) External MSDS
Related compounds
Related compounds
Potassium sulfate
Sodium bisulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Potassium bisulfate (potassium bisulphate) is an inorganic compound with the chemical formula KHSO4 and is the potassium acid salt of sulfuric acid. It is a white, water-soluble solid.

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Potassium bisulfate

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Potassium bisulfate (potassium bisulphate) is an inorganic compound with the chemical formula KHSO4 and is the potassium acid salt of sulfuric acid. It...

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Potassium sulfate

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topical mosquito repellent.[citation needed] Potassium hydrogen sulfate (also known as potassium bisulfate), KHSO4, is readily produced by reacting K2SO4...

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Potassium persulfate

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one long S-O bond at 1.65 Å. Potassium persulfate can be prepared by electrolysis of a cold solution potassium bisulfate in sulfuric acid at a high current...

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Sodium bisulfate

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Sodium bisulfate, also known as sodium hydrogen sulfate, is the sodium salt of the bisulfate anion, with the molecular formula NaHSO4. Sodium bisulfate is...

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Ammonium bisulfate

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Ammonium bisulfate, also known as ammonium hydrogen sulfate, is a white, crystalline solid with the formula (NH4)HSO4. This salt is the product of the...

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Graphite intercalation compound

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been intercalated into graphite. The intercalation compounds graphite bisulfate and graphite perchlorate can be prepared by treating graphite with strong...

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Potassium bicarbonate

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Potassium bicarbonate (IUPAC name: potassium hydrogencarbonate, also known as potassium acid carbonate) is the inorganic compound with the chemical formula...

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Acrolein

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H2O Acrolein may also be produced on lab scale by the action of potassium bisulfate on glycerol (glycerine). Acrolein is a relatively electrophilic compound...

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Potassium pyrosulfate

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directly from potassium bisulfate: 2 KHSO4 → K2S2O7 + H2O Temperatures above 600°C further decompose potassium pyrosulfate to potassium sulfate and sulfur...

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Resorcinol

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[(HO)C6H3(O)]2CH2. Reaction with chloral hydrate in the presence of potassium bisulfate yields the lactone of tetra-oxydiphenyl methane carboxylic acid....

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Sodium pyrosulfate

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complete dissolution before a quantitative analysis. Pyrosulfate Potassium bisulfate Potassium pyrosulfate Olsen, J. C., ed. (1934). Van Nostrand's Chemical...

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Mucic acid

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The acid when fused with caustic alkalis yields oxalic acid. With potassium bisulfate mucic acid forms 3-hydroxy-2-pyrone by dehydration and decarboxylation...

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E number

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; Takahashi, M.; Hayashi, Y. (1990). "Toxicity and carcinogenicity of potassium bromate–a new renal carcinogen". Environmental Health Perspectives. 87:...

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Sulfate

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ion carries an overall charge of −2 and it is the conjugate base of the bisulfate (or hydrogensulfate) ion, HSO−4, which is in turn the conjugate base of...

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Sulfur trioxide

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can be prepared in the laboratory by the two-stage pyrolysis of sodium bisulfate. Sodium pyrosulfate is an intermediate product: Dehydration at 315 °C:...

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List of CAS numbers by chemical compound

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298–14–6 K(HF2) potassium bifluoride 7789–29–9 KHSO4 potassium bisulfate 7646–93–7 KH2PO4 potassium diphosphate 7778–77–0 KH4B potassium borohydride 13762–51–1...

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Ethyl sulfate

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bicarbonate salt. As an example, ethyl sulfate and potassium carbonate forms potassium ethyl sulfate and potassium bicarbonate. CH 3 − CH 2 − O − SO 3 H + K 2...

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Ammonium persulfate

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ammonium bisulfate in sulfuric acid at a high current density. The method was first described by Hugh Marshall. The ammonium, sodium, and potassium salts...

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Glossary of chemical formulae

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KHSO4 potassium bisulfate 7646-93-7 KH2PO3 monopotassium phosphite KH2PO4 monopotassium phosphate KI potassium iodide 7681-11-0 KIO potassium hypoiodite...

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Perchloryl fluoride

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3O+ + 2 SbF− 6 Alternatively, potassium perchlorate reacts with excess fluorosulfuric acid to give potassium bisulfate and perchloryl fluoride: KClO4 +...

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Sodium sulfate

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Sodium sulfate reacts with sulfuric acid to give the acid salt sodium bisulfate: Na2SO4 + H2SO4 ⇌ 2 NaHSO4 Sodium sulfate displays a moderate tendency...

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Acid salt

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10^{-10}} Alkali salt Salt (chemistry) Oxoacid Sodium bicarbonate Sodium bisulfate Disodium phosphate Monosodium phosphate Cady, H. P.; Elsey, H. M. (1928)...

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Sulfuric acid

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acetic acid, CH3COOH, and forms sodium bisulfate: H2SO4 + CH3CO2Na → NaHSO4 + CH3COOH Similarly, treating potassium nitrate with sulfuric acid produces nitric...

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List of inorganic compounds

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NH3 Ammonium azide – [NH4]N3 Ammonium bicarbonate – [NH4]HCO3 Ammonium bisulfate – [NH4]HSO4 Ammonium bromide – NH4Br Ammonium chromate – [NH4]2CrO4 Ammonium...

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Peroxydisulfuric acid

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(dissociation of sulfuric acid) 2 HSO4− → H2S2O8 + 2 e− (E0 = +2.4V) (bisulfate oxidation) 2 H2SO4 → H2S2O8 + H2 (overall reaction) 3 H2O → O3 + 6 H+...

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Sulfamic acid

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however, aqueous solutions of sulfamic acid slowly hydrolyse to ammonium bisulfate, according to the following reaction: H3NSO3 + H2O → [NH4]+[HSO4]− Its...

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Mannheim process

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sodium chloride. The Mannheim furnace is also used to produce potassium sulfate from potassium chloride. The Mannheim process is a stage in the Leblanc process...

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Reversal film

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effective film speed from 32 to 64. The bleaching bath used potassium dichromate and sodium bisulfate; the redeveloper was a fogging developer, and so unstable...

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