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Calcium hypochlorite

Description References
Calcium hypochlorite
Calcium hypochlorite structure
Chemical Name:
Calcium hypochlorite
Molecular Formula:
Formula Weight:
MOL File:

Calcium hypochlorite Properties

Melting point:
100 °C(lit.)
2.35 g/mL at 25 °C(lit.)
storage temp. 
Store at RT.
200g/l (decomposition)
White to off-white or faint green
Specific Gravity
Chlorine-like odor
Water Solubility 
200 g/L (20 ºC) (dec.)
Stability Strong oxidizer - contact with flammable material may lead to fire. Incompatible with water, reducing agents, combustible material, phenol.
Indirect Additives used in Food Contact Substances
CAS DataBase Reference
7778-54-3(CAS DataBase Reference)
EPA Substance Registry System
Calcium hypochlorite (7778-54-3)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H272-H302-H314-H400
Precautionary statements  P220-P273-P280-P305+P351+P338-P310-P210a-P221-P303+P361+P353-P405-P501a
Hazard Codes  O,C,N
Risk Statements  8-22-31-34-50
Safety Statements  26-36/37/39-45-61
RIDADR  UN 1748 5.1/PG 2
WGK Germany  2
RTECS  NH3485000
HS Code  2828 10 00
HazardClass  5.1
PackingGroup  II
Toxicity LD50 orally in Rabbit: 850 mg/kg LD50 dermal Rabbit > 2000 mg/kg
NFPA 704
3 1

Calcium hypochlorite price More Price(8)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 211389 Calcium hypochlorite technical grade 7778-54-3 5g $46.1 2020-08-18 Buy
Sigma-Aldrich 211389 Calcium hypochlorite technical grade 7778-54-3 1kg $126 2020-08-18 Buy
Alfa Aesar 042548 Calcium hypochlorite tech. 7778-54-3 50g $23.8 2020-06-24 Buy
Alfa Aesar 042548 Calcium hypochlorite, tech. 7778-54-3 250g $32 2020-06-24 Buy
Sigma-Aldrich 8.41799 Calcium hypochlorite for synthesis. CAS 7778-54-3, chemical formula Ca(OCl) ., for synthesis 7778-54-3 8417990500 $36.8 2020-08-18 Buy

Calcium hypochlorite Chemical Properties,Uses,Production


Calcium hypochlorite (molecular formula: Ca (ClO)2) is a kind of inorganic compound. It appears as a white granular solid with chlorine odor. Though it is relatively stable and non-combustible, it will accelerate the burning of combustible materials. Sodium hypochlorite solid is generally not commercialized. Instead, it is highly soluble in water and can be formulated into various concentrations. The resulting sodium hypochlorite solutions appears as clear, green to yellow liquids. It has two major applications. One is sanitation. For this purpose, it is primarily used as bleaching agent or disinfectants to sanitize publish swimming pools as well as disinfect drinking water. It is also used in the disinfection of surfaces and equipment of kitchen and bathroom. Moreover, it can be used as algaecides, herbicide and laundry detergents. Another major application is in organic chemistry. It can act as a general oxidizing agent for the cleavage of glycols, keto acids to obtain fragmented aldehydes or carboxylic acid. It can also be used for the manufacture of chloroform. Calcium hypochlorite can be manufactured through the reaction between limes (Ca(OH)2) with chlorine gas to give various concentrations of products. Calcium hypochlorite is toxic. Its solution can emit toxic gases such as chlorine. Inhalation can lead to olfactory fatigue and irritation on the lung airway. It is also irritating to the skin and eye upon contact. Ingestion of it can cause vomiting and corrosive injury to the gastrointestinal tract.


Chemical Properties

Calcium hypochlorite, Ca(OCl)2.4H20, also known as calcium oxychloride, chlorinated lime, and bleach, is a deliquescent white powder used as a bleaching agent in the textile and pulp industries and as a disinfectant. It contains 60 to 65% available chlorine,

Chemical Properties

Calcium hypochlorite is a white powder, granule, or pellets with a strong chlorine-like odor.

Physical properties

White crystalline solid; density 2.35 g/cm3; decomposes when heated to 100°C; soluble in water and alcohol (with decomposition).


Bleaching powder is actually a mixture of calcium hypochlorite (Ca(ClO)2) and the basic chloride CaCl2, H2O with some slaked lime, Ca(OH)2. The product is generally called “bleaching powder”. It consists of a mixture of calcium chloride (CaCl2), calcium hypochlorite (Ca(OCl)2), and calcium chloride hypochlorite (CaCl(OCl)). Ca(ClO)2 is used in industrial wastewater treatment, sanitation and cleaning, epidemic prevention and household sanitation facilities, as well as for disinfection and sterilization of swimming pools, drinking water, cleaning vegetables, and sanitizing fishponds.
Calcium hypochlorite has been used for bleaching of cotton, hemp, fiber, pulp and starch, disinfection of surfaces, and as a sterilant for water treatment. It has also been proposed as a solid fire extinguisher.


Bleaching of wood pulp, linen, cotton, straw, oils, soaps, and in laundering; oxidizer in calico printing to obtain white designs on a colored ground; destroying caterpillars; disinfecting drinking water, sewage, etc.; as a decontaminant for mustard gas and similar substances.


A white solid that can be regarded as a mixture of calcium chlorate(I) (calcium hypochlorite), calcium chloride, and calcium hydroxide. It is prepared on a large scale by passing a current of chlorine through a tilted cylinder down which is passed calcium hydroxide. Bleaching powder has been used for bleaching paper pulps and fabrics and for sterilizing water. Its bleaching power arises from the formation, in the presence of air containing carbon dioxide, of the oxidizing agent chloric(I) acid (hypochlorous acid, HClO):
Ca(ClO)2.Ca(OH)2.CaCl2 + 2CO2
2CaCO3 + CaCl2 + 2HClO.


Calcium hypochlorite is manufactured by two main processes, the socalled “calcium process” and the “sodium process”. These are essentially the same as described for the Mg(ClO)2 salt method given above except that a sodium hypochlorite salt is used in one


As strong oxidant, calcium hypochlorite may react with vigor in combination with carbon compounds, and combination with finely divided carbon particles forms an explosive mixture. Reaction with acetylene leads to creation of explosive chloroacetylenes. Contact with organic matter, oil, hydrocarbons and alcohols such as methanol or ethanol may cause a violent explosion. Reaction with nitromethane causes a delayed violent reaction. Organic sulfur compounds such as sulfides react by self-ignition and explosion. Iron oxide in metal containers catalyze oxygen-evolving decomposition of the oxidant.

General Description

Calcium hypochlorite, hydrated is a white granular solid or tablets compressed from the granules having an odor of chlorine. Calcium hypochlorite is noncombustible, but Calcium hypochlorite will accelerate the burning of combustible materials. Calcium hypochlorite is decomposed by water with evolution of chlorine gas and heat. Prolonged exposure to fire or heat may result in the vigorous decomposition of the material and rupture of the container. Material containing less than 39% available chlorine may undergo reactions as described above though Calcium hypochlorite may take longer to initiate, and the resulting reactions may not be as vigorous. Calcium hypochlorite is used for water purification, disinfectant for swimming pools, for bleaching paper and textiles, and for many other uses.

Reactivity Profile

CALCIUM HYPOCHLORITE is a powerful oxidizing agent, particularly in the presence of water or at higher temperature as Calcium hypochlorite decomposes to release oxygen and chlorine gases. As strong oxidant Calcium hypochlorite may react with vigor in combination with carbon, especially finely divided is explosive; acetylene, leads to creation of explosive chloroacetylenes; organic matter, oil, hydrocarbons; alcohols may cause explosion, methanol, ethanol, etc.; nitromethane caused delayed violent reaction; organic sulfur compounds, sulfides tend toward ignition and sometimes explosion; with iron oxide in metal containers catalyze oxygen evolving decomposition of the oxidant. Calcium hypochlorite forms highly explosive NCl3 on contact with urea. Produces highly toxic gaseous chlorine gas when heated or on contact with acids [Sax, 9th ed., 1996, p. 1905]. Mixture of damp sulfur with hypochlorite caused a violent reaction, that ejected molten sulfur, Chem Eng. News, 1965, 46(29), 6.


Dangerous fire risk in contact with organic materials.

Health Hazard

Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.

Industrial uses

Calcium hypochlorite Ca(OCl)2 can be found in swimming pool disinfectants, in bleaching agents, in deodorants and in fungicides.


UN1748 Calcium hypochlorite, dry or Calcium hypochlorite mixtures dry with .39% available chlorine (8.8% available oxygen), Hazard Class: 5.1; Labels: 5.1- Oxidizer. UN2208 Calcium hypochlorite mixtures, dry, with .10% but not .39% available chlorine, Hazard Class: 5.1; Labels: 5.1-Oxidizer. UN2880 Calcium hypochlorite, hydrated or Calcium hypochlorite, hydrated mixtures, with not ,5.5% but not .16% water, Hazard Class: 5.1; Labels: 5.1-Oxidizer


A powerful oxidizer. Decomposes in heat or sunlight; becomes explosive above 100C/212F. Incompatible with strong acids; water and other forms of moisture, reducing agents; combustible materials; all other chemicals, especially acetylene, aniline and all other amines, anthracene, carbon tetrachloride, iron oxide, manganese oxide, mercaptans, diethylene glycol monomethyl ether, nitromethane, organic matter; organic sulfides, phenol, 1-propanethiol, propyl mercaptan, sulfur, turpentine, organic sulfur compounds. Attacks various metals, releasing flammable hydrogen gas.

Waste Disposal

Dissolve the material in water and add to a large volume of concentrated reducing agent solution, then acidify the mixture with H2SO4. When reduction is complete, soda ash is added to make the solution alkaline. The alkaline liquid is decanted from any sludge produced, neutralized, and diluted before discharge to a sewer or stream. The sludge is landfilled

Calcium hypochlorite Preparation Products And Raw materials

Raw materials

Preparation Products

Calcium hypochlorite Suppliers

Global( 283)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
hdzhl biotechnology co., ltd
86-13032617415 CHINA 1277 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22625 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 2754 55
Hebei Guanlang Biotechnology Co., Ltd.
whatsapp: +8619930501651 CHINA 2586 58
Cangzhou Wanyou New Material Technology Co.,Ltd
18631714998 CHINA 914 58
Hubei xin bonus chemical co. LTD
027-59338440 CHINA 23045 58
Shandong chuangyingchemical Co., Ltd.
18853181302 CHINA 5917 58
career henan chemical co
0086-371-86658258 CHINA 29642 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-88380327 CHINA 3533 58
Zhuozhou Wenxi import and Export Co., Ltd
+8613111626072 CHINA 7507 58

View Lastest Price from Calcium hypochlorite manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-08-11 Bleaching powder Ca(ClO)2
US $900.00 / T 20T 99% 2000tons Hebei Yanxi Chemical Co., Ltd.
2020-07-01 Calcium hypochlorite
US $200.00 / KG 25Kg/Bag 99% 500000KG Hebei Mojin Biotechnology Co., Ltd
2020-06-30 Calcium Hypochlorite
US $1070.00 / T 1KG 99% 20tons Hebei Mojin Biotechnology Co., Ltd

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