Basic information
- Name:
Calcium hypochlorite
- CAS No.:
7778-54-3
- Molecular Structure:
- Formula:
- Ca(ClO)2
- Molecular Weight:
- 142.98
- Deleted CAS:
- 8031-48-9|56172-56-6|1332-17-8|129904-51-4|104381-95-5
- Synonyms:
- Hypochlorousacid, calcium salt (8CI,9CI);B-K Powder;Bleaching powder;Ca(ClO)2;Calcium oxychloride;Caporit;Chemichlon G;Chloride of lime;Chlorinated lime;Chloro lime chemical;Eusol BPC;HTH (bleaching agent);HTHVAN;Lime chloride;Losantin;Nisso Hi-Chlon;Nisso Hi-chlon LC;Perfect PA;Solvox KS;T-Eusol;Granular Calcium Hypochlorite;
- EINECS:
- 231-908-7
- Density:
- 2.35 g/mL at 25 °C(lit.)
- Melting Point:
- 100 °C
- Solubility:
- 200 g/L (20 °C) (dec.) in water
- Appearance:
- white powder with a chlorine-like odour
- Hazard Symbols:
O, 
C, 
N- Risk Codes:
- 8-22-31-34-50
- Safety Description:
- 26-36/37/39-45-61 Details
- Transport Information:
- UN 1748 5.1/PG 2
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Chemistry
The Molecular structure of Calcium hypochlorite(7778-54-3) : 
The Molecular formula of Calcium hypochlorite(7778-54-3) : Ca(ClO)2
The Molar mass of Calcium hypochlorite(7778-54-3) : 142.985 g/mol
Appearance: white/gray powder
Density: 2.35 g/cm3 (20 °C)
Solubility in water: 21 g/100 ml, reacts
Solubility: reacts in alcohol
Calcium hypochlorite's melting point is 100°C and boiling point is 175°C, decomposes.
Uses
CALCIUM hypochlorite (7778-54-3) is also used for bleaching cotton and linen and is used in the manufacture of chloroform.
Other uses are:
1. As bathroom cleaner
2. Clean secondhand items
3. Glow to glass dish ware
4. Household disinfectant spray
5. Remove moss and alga
6. Sanitize garden tools
7. Kill weeds in walkways
8. Preserve the cut flowers fresh
9. Clean lawn furniture.
Production
Calcium hypochlorite (7778-54-3) is manufactured by chlorination of calcium hydroxide [CaOH)2] followed by the separation of the calcium hypochlorite [Ca(OCl)2] through salting out from solution with sodium chloride.
2Ca(OH)2 + 2Cl2 → Ca(OCl)2 + CaCl2 + H2O
Calcium hypochlorite(7778-54-3) is also manufactured by the formation under refrigeration of the complex salt Ca(OCl)2 NaOCl.NaCl.12H2O, which is prepared by the chlorination of a mixture of sodium hydroxide and calcium hydroxide. The salt is reacted with a chlorinated lime slurry, filtered to remove salt, and dried, resulting finally in a stable product containing 65 to 70% calcium hypochlorite.
Toxicity Data With Reference
Safety Profile
O, 
C, 
N The Risk Statements information of Calcium hypochlorite(7778-54-3):
8: Contact with combustible material may cause fire
22: Harmful if swallowed
31: Contact with acids liberates toxic gas
34: Causes burns
50: Very Toxic to aquatic organisms
The Safety Statements information of Calcium hypochlorite(7778-54-3):
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
61: Avoid release to the environment. Refer to special instructions safety data sheet
36/37/39: Wear suitable protective clothing, gloves and eye/face protection