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8.41799

Sigma-Aldrich

Calcium hypochlorite

for synthesis

Synonym(s):

Calcium hypochlorite

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About This Item

Linear Formula:
Ca(OCl)2
CAS Number:
Molecular Weight:
142.98
MDL number:
UNSPSC Code:
12352302
EC Index Number:
231-908-7
NACRES:
NA.22

Quality Level

form

tablet

potency

850 mg/kg LD50, oral (Rat)
>2000 mg/kg LD50, skin (Rabbit)

mp

100 °C

density

2.35 g/cm3 at 20 °C

storage temp.

15-25°C

InChI

1S/Ca.2ClO/c;2*1-2/q+2;2*-1

InChI key

ZKQDCIXGCQPQNV-UHFFFAOYSA-N

General description

Calcium hypochlorite [Ca(OCl)2] is a stable oxidizing agent used for the conversion of ethers to esters; thioethers to sulfoxides; aldehydes to acids and alkenes to chlorohydrins. It is also used in the C-C bond cleavage and chlorination reactions.

Application

Calcium hypochlorite can be used as an oxidative agent:
  • In the epoxidation of various alkene derivatives.
  • To synthesize α-arylamino-α′-chloropropan-2-ones from various trifluoroacetyl-protected N-(2-chloroallyl)anilines via oxidative hydrolysis.
  • To convert 1o & 2o alcohols, α-hydroxyamides, and α-hydroxyesters to their corresponding aldehydes, ketones, α-ketoamides, and α-ketoesters in the presence of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) as a catalyst.
  • To prepare dihydrotriazolediones and bis-dihydrotriazolediones by oxidation of urazoles and bis-urazoles.

Analysis Note

Assay (iodometric): 67.0 - 75.0 %
Identity: passes test

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Eye Dam. 1 - Ox. Sol. 2 - Skin Corr. 1B

Supplementary Hazards

Storage Class Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 2


Certificates of Analysis (COA)

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Epoxidation of vinyl cyanides by calcium hypochlorite under catalyst-and solvent-free conditions
Mirhashemi F and Amrollahi MA
Tetrahedron Letters, 59(27), 2661-2663 (2018)
Simplified Procedure for TEMPO-Catalyzed Oxidation: Selective Oxidation of Alcohols, α-Hydroxy Esters, and Amides Using TEMPO and Calcium Hypochlorite
Reddy SR, et al.
Synthetic Communications, 42(23), 3493-3503 (2012)
Highly Efficient Synthesis of New α-Arylamino-α?-chloropropan-2-ones via Oxidative Hydrolysis of Vinyl Chlorides Promoted by Calcium Hypochlorite
Pace Vittorio, et al.
Advanced Synthesis & Catalysis, 351(18), 3199-3206 (2009)
Calcium Hypochlorite
Keehn PM and Nwaukwa SO
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2001)
Calcium hypochlorite as an efficient reagent for oxidation of urazoles under mild heterogeneous conditions
Zolfigol MA, et al.
Russ. J. Org. Chem., 40(6), 914-916 (2004)

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