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Potassium bisulfate

Potassium bisulfate
Potassium bisulfate
Chemical Name:
Potassium bisulfate
salenixum;POTASSIUM BISULFATE;monopotassiumsulfate;acidpotassiumsulfate;Kaliumhydrogensulfat;POTASSIUM BISULPHATE;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.)
2.32 g/mL at 25 °C(lit.)
storage temp. 
H2O: 1 M at 20 °C, clear, colorless
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
  • Hazard and Precautionary Statements (GHS)
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
HazardClass  8
PackingGroup  II
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P310 Immediately call a POISON CENTER or doctor/physician.
P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Potassium bisulfate price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 1.04885 Potassium hydrogen sulfate for analysis EMSURE Reag. Ph Eur 7646-93-7 1EA $73.5 2017-11-08 Buy
Sigma-Aldrich 1.04885 Potassium hydrogen sulfate for analysis EMSURE Reag. Ph Eur 7646-93-7 2EA $225 2017-11-08 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 401544 Potassium bisulfate ≥99.99% trace metals basis 7646-93-7 10g $40.5 2018-11-13 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.

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( 131)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555 CHINA 1374 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32764 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 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 40399 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30308 84
BeiJing Hwrk Chemicals Limted 4006990298;010-57411839;0757-86311057;021-51691807
010-87653215;0757-86311057;021-55236763 China 14687 55
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44192 61
Beijing Ouhe Technology Co., Ltd +86-10-4006331231;+86-10-51280831;+86-10-82967028
+86-10-82967029 China 12613 60
Adamas Reagent, Ltd. 400-600-9262 China 14017 59
Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
028-84752058 China 9740 57

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