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Potassium bisulfate

Potassium bisulfate
Potassium bisulfate structure
Chemical Name:
Potassium bisulfate
salenixum;POTASSIUM BISULFATE;POTASSIUM BISULPHATE;acidpotassiumsulfate;monopotassiumsulfate;Kaliumhydrogensulfat;POTASSIUM PESULPHATE;POTASSIUM ACID SULFATE;POTASSIUM SULFATE, ACID;Potassium bisulfate, c.p.
Molecular Formula:
Formula Weight:
MOL File:

Potassium bisulfate Properties

Melting point:
214 °C(lit.)
Boiling point:
decomposes [STR93]
2.32 g/mL at 25 °C(lit.)
storage temp. 
H2O: 1 M at 20 °C, clear, colorless
Specific Gravity
1 (50g/l, H2O, 20℃)
Water Solubility 
Stable. Moisture sensitive.
CAS DataBase Reference
7646-93-7(CAS DataBase Reference)
EPA Substance Registry System
Sulfuric acid, monopotassium salt(7646-93-7)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H314-H335
Precautionary statements  P261-P280-P305+P351+P338-P310-P260h-P301+P330+P331-P303+P361+P353-P405-P501a
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
HS Code  2833 29 80
HazardClass  8
PackingGroup  II
Toxicity LD50 orally in Rabbit: 2340 mg/kg

Potassium bisulfate price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 223476 Potassium bisulfate reagent grade 7646-93-7 500g $142 2018-11-13 Buy
Sigma-Aldrich 223476 Potassium bisulfate reagent grade 7646-93-7 1kg $179 2018-11-13 Buy
Alfa Aesar A12428 Potassium hydrogen sulfate, 97% 7646-93-7 100g $28.5 2018-11-13 Buy
Alfa Aesar A12428 Potassium hydrogen sulfate, 97% 7646-93-7 500g $62.1 2018-11-13 Buy
Sigma-Aldrich 1.04885 Potassium hydrogen sulfate for analysis EMSURE Reag. Ph Eur 7646-93-7 1048850500 $85.5 2018-11-23 Buy

Potassium bisulfate Chemical Properties,Uses,Production

Chemical Properties

Also 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.


As flux in analysis of ores and siliceous Compounds.

General Description

Potassium 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 Reactions

Fused salt is deliquescent, Soluble in water, yielding a corrosive acidic solution.

Reactivity Profile

Acidic 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 Hazard

TOXIC; 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 Hazard

Non-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 Profile

Moderately 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 Methods

Crystallise 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.

Potassium bisulfate Preparation Products And Raw materials

Raw materials

Preparation Products

Potassium bisulfate Suppliers

Global( 146)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555 CHINA 1365 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32447 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 1861 55
career henan chemical co
+86-371-86658258 CHINA 30001 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 23980 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114 CHINA 6372 58
Hubei xin bonus chemical co. LTD
027-59338440 CHINA 23049 58
Chongqing Chemdad Co., Ltd
+86-13650506873 CHINA 35440 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
86-10-82849933; China 96506 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) China 40269 62

View Lastest Price from Potassium bisulfate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-07-12 Potassium bisulfate
US $1.00 / KG 1KG 995 25kg career henan chemical co
2019-03-01 Potassium Bisulphate
US $0.00 / kg 25kg 99% 10000 Hefei TNJ Chemical Industry Co.,Ltd.

Potassium bisulfate Spectrum

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