Potassium bisulfate

Potassium bisulfate Basic information
Product Name:Potassium bisulfate
Synonyms:Potassium bisulfate, for analysis, 98.5%;acidpotassiumsulfate;monopotassiumsulfate;POTASSIUM HYDROGEN SULPHATE pure;Potassium bisulfate, for analysis;Sulfuric acid hydrogen potassium salt;Potassium bisulfate,98.5%,for analysis;PotassiuM bisulfate, for analysis, 98.5% 500GR
CAS:7646-93-7
MF:HKO4S
MW:136.16884
EINECS:231-594-1
Product Categories:Materials Science;Metal and Ceramic Science;Inorganics;Inorganic Salts;Potassium Salts;Salts;Potassium;Synthetic Reagents
Mol File:7646-93-7.mol
Potassium bisulfate Structure
Potassium bisulfate Chemical Properties
Melting point 214 °C(lit.)
Boiling point decomposes [STR93]
density 2.32 g/mL at 25 °C(lit.)
storage temp. Store at +5°C to +30°C.
solubility H2O: 1 M at 20 °C, clear, colorless
form Solid
color White
Specific Gravity2.322
PH1 (50g/l, H2O, 20℃)
Water Solubility soluble
Sensitive Hygroscopic
Merck 14,7613
Stability:Stable. Moisture sensitive.
CAS DataBase Reference7646-93-7(CAS DataBase Reference)
EPA Substance Registry SystemPotassium bisulfate (7646-93-7)
Safety Information
Hazard Codes C
Risk Statements 34-37
Safety Statements 26-36/37/39-45
RIDADR UN 2509 8/PG 2
WGK Germany 1
RTECS TS7200000
3
TSCA Yes
HS Code 2833 29 80
HazardClass 8
PackingGroup II
ToxicityLD50 orally in Rabbit: 2340 mg/kg
MSDS Information
ProviderLanguage
SigmaAldrich English
ACROS English
ALFA English
Potassium bisulfate Usage And Synthesis
Chemical PropertiesAlso known as acid potassium sulfate and potassium acid sulfate, KHS04 is water soluble, white deliquescent crystals,which melt at 214°C. It is used in wine making, fertilizer manufacture, and as a flux and food preservative.
UsesAs flux in analysis of ores and siliceous Compounds.
UsesPotassium hydrogen sulfate is used in the conversion of tartrates to bitartrates in wine. It serves as a disintegrating agent in analytical chemistry and as an intermediate in the preparation of potassium persulfate by electrolysis. It is also employed in the manufacturing of fertilizers.
UsesPotassium bisulfate may be used:
  • As a catalyst for the preparation of butyl paraben from p-hydroxybenzoic acid and n-butyl alcohol.
  • As a promoter for the synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives via Biginelli reaction in ethylene glycol.
  • As an acid catalyst for the synthesis of ethyl tert-butyl ether (ETBE) from ethanol and tert-butyl alcohol via reactive distillation.
  • As a dehydrating agent for the synthesis of pyruvic acid from tartaric acid.
General DescriptionPotassium bisulfate is a colorless crystalline solid with a sulfur odor. Potassium bisulfate may cause illness from ingestion. If heated to high temperatures Potassium bisulfate may emit toxic fumes. Potassium bisulfate is used to make fertilizers and wine.
Air & Water ReactionsFused salt is deliquescent, Soluble in water, yielding a corrosive acidic solution.
Reactivity ProfileAcidic salts, such as Potassium bisulfate , are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.
Health HazardTOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire HazardNon-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Safety ProfileModerately toxic by ingestion. A corrosive irritant to the skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of SOx and K2O. Can form an explosive mixture. See also SULFATES.
Purification MethodsCrystallise it from H2O (1mL/g) between 100o and 0o. It is also formed when a warm solution of K2SO4 in conc H2SO4 is cooled down.
Sodium bisulfate Potassium sulfate ALUMINUM POTASSIUM SULFATE Losartan potassium POTASSIUM HYDROGEN SULFITE Potassium peroxymonosulfate POTASSIUM PEROXYMONOSULFATE Potassium sorbate Potassium bromate Potassium persulfate 6-BROMO-2-NAPHTHYL SULFATE, POTASSIUM SALT P-NITROPHENYL SULFATE POTASSIUM SALT Potassium Acetate Potassium chloride Potassium Potassium bisulfate POTASSIUM CYANIDE Potassium nitrate

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