Cradle to Gate
Identity ID
ea0c28e5-73ba-4d3b-b3cd-62766c098666
Materials
Associated ID
fcbd9f0e-6c2e-4357-9f84-251e86961499
Included activities starts
Included activities ends
Description
Calcium hypochlorite is mainly used in fields such as disinfection, water treatment, food processing, papermaking and textile bleaching, and chemical synthesis, and can also be used for preparing cleaning agents and disinfectants; Calcium hypochlorite is modelled as a pure substance; when modelling this substance, the user is required to add a solvent of their choice in the model. The dataset includes the main raw and auxiliary materials, energy and atmospheric emissions of the production process, while infrastructure such as the manufacture of production equipment and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product include feeding, chlorination, separation, drying and other process steps. Sodium chloride is a by-product of this production process.
Activity Description
The production activities of this product include feeding, chlorination, separation, drying and other processes.
Process Description
Calcium hypochlorite has the chemical formula Ca(OCl)2 and CAS number 7778-54-3. It is generally a white or off-white powder with a pronounced pungent chlorine odor and readily absorbs moisture and forms lumps. It dissolves readily in water to form a strongly alkaline solution and is insoluble in organic solvents such as ethanol and diethyl ether. It is chemically reactive and has strong oxidizing and bleaching properties. In water it gradually forms hypochlorous acid, which further decomposes and releases oxygen and hydrochloric acid, producing disinfecting and bleaching effects. Contact with acids rapidly releases chlorine gas. It is widely used to disinfect drinking water, swimming pools, municipal wastewater, environments, and surfaces and to bleach fabrics and pulp. Other applications include degrading reducing contaminants and removing odors in water treatment, disinfecting food-processing equipment, pipelines, and workshops, use as an oxidizing agent in chemical synthesis, and water disinfection and disease prevention in aquaculture.
Time period
2024
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The sodium process is an advanced technology for producing calcium hypochlorite. Compared with the traditional calcium process, the product offers higher effective chlorine content and better stability. Its market share in the domestic high-end calcium hypochlorite market is gradually increasing, making it an important direction for replacing the traditional process. Calcium hypochlorite is modeled as being produced by the sodium process, involving the chemical reaction equations: Cl2 + 2NaOH = NaClO + NaCl + H2O, and 2NaClO + Ca(OH)2 → Ca(ClO)2↓ + 2NaOH.