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CAS No.: | 7722-86-3 |
---|---|
Name: | peroxomonosulphuric acid |
Article Data: | 82 |
Molecular Structure: | |
Formula: | H2O5S |
Molecular Weight: | 114.079 |
Synonyms: | Peroxomonosulphuric acid; |
Density: | 2.239g/cm3 |
Melting Point: | 45, decomposing [HAW93] |
Safety: | Strong irritant. Powerful oxidizer. An explosive. Explosive reaction acetone; alcohols; aromatics (e.g., aniline; benzene; phenol); platinum; manganese dioxide; silver. Incompatible with acetone; catalysts; fibers. When heated to decomposition it emits toxic fumes of SOx. See also PEROXIDES, INORGANIC; PEROXIDES, ORGANIC. |
PSA: | 79.44000 |
LogP: | 0.13700 |
Conditions | Yield |
---|---|
in traces H2O2, Cl2, H2S2O8; | 96.6% |
in traces H2O2, Cl2, H2S2O8; | 96.6% |
sulfuric acid monohydrate
A
caro's acid
B
dihydrogen peroxide
C
Marshall's acid
Conditions | Yield |
---|---|
without water, -10°C; | A 93.5% B 1.4% C 5.1% |
without water, -10°C; | A 93.5% B 1.4% C 5.1% |
Conditions | Yield |
---|---|
With H2SO4 In neat (no solvent) 87.3% H2O2 added to 65% oleum at 0-10°C within 1 h; crystals isolated by slow cooling to -20°C for 24 h; | 62.9% |
In neat (no solvent) reaction with anhydrous H2O2, cooling;; | |
under heat evolution, in water proof condition forming very little product; | |
In water -5°C; |
Conditions | Yield |
---|---|
With ozone In water | A n/a B 1% |
With ozone In water | A n/a B 1% |
With ozone ozonisated H2SO3 soln.; | A n/a B <1 |
With ozone ozonisated H2SO3 soln.; | A n/a B <1 |
sulfur trioxide
water
dihydrogen peroxide
A
caro's acid
B
sulfuric acid
C
Marshall's acid
Conditions | Yield |
---|---|
at 13 - 15℃; for 5.5 - 7h; |
Conditions | Yield |
---|---|
In water Kinetics; byproducts: H2O; slow addn. of H2O2 to H2SO4 soln.; react. carried out in temp. range 283-323 K, thermostated; titrimetry; | |
In not given concd. H2SO4; | |
In water at 2 - 8℃; for 3.5h; Product distribution / selectivity; | |
at 92℃; Product distribution / selectivity; Cooling; | |
In not given concd. H2SO4; |
Conditions | Yield |
---|---|
In neat (no solvent) cooling;; | |
>98.5 | |
>98.5 |
Conditions | Yield |
---|---|
In sulfuric acid addition of H2O2 (100%) to oleum;; |
Conditions | Yield |
---|---|
With ozone In water | <1 |
In water Electrolysis; anodic process; | |
In not given | |
With O3 In water | <1 |
sulfuric acid
A
caro's acid
B
dihydrogen peroxide
C
oxygen
D
Marshall's acid
Conditions | Yield |
---|---|
In water Electrolysis; glow discharge electrolysis by alternating current; mechanismus discussed; | |
In water Electrolysis; glow discharge electrolysis by alternating current; 12°C; C(val) H2SO4 = 1-10; 50 Hz; current density 0.04 A/cm2; p = 11 torr; | |
In water Electrolysis; glow discharge electrolysis by alternating current; 12°C; C(val) H2SO4 = 1-10; 50 Hz; current density 0.04 A/cm2; p = 11 torr; | |
In water Electrolysis; glow discharge electrolysis by alternating current; mechanismus discussed; | |
In water Electrolysis; glow discharge electrolysis by alternating current; mechanismus discussed; |
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Chemistry informtion about Peroxymonosulfuric Acid (CAS NO.7722-86-3) is:
IUPAC Name: Tetraoxathiolane 5,5-Dioxide
Synonyms: Peroxomonosulphuric Acid ; Peroxysulfuric Acid ; Persulfuric Acid ; Sulfomonoperacid ; Peroxymonosulfuric Acid ; Caro Acid ; Peroxosulfuric Acid
MF: O6S
MW: 128.0614
EINECS: 231-766-6
Density: 1.7-1.8 g/cm3
Following is the molecular structure of Peroxymonosulfuric Acid (CAS NO.7722-86-3) is:
Peroxymonosulfuric Acid was first described by Heinrich Caro, after whom it is named.
Peroxymonosulfuric Acid (CAS NO.7722-86-3) has been used for a variety of disinfectant and cleaning applications, e.g., swimming pool treatment and denture cleaning. Alkali metal salts of H2SO5 show promise for the delignification of wood. Ammonium, sodium, and potassium salts of Peroxymonosulfuric Acid are used in the plastics industry as polymerization initiators, etchants, desizing agents, soil conditioner, and for decolorizing and deodorizing oils. Potassium peroxymonosulfate, KHSO5, is the potassium acid salt of peroxymonosulfuric acid. It is widely used as an oxidizing agent.
Strong irritant. Powerful oxidizer. An explosive. Explosive reaction acetone; alcohols; aromatics (e.g., aniline; benzene; phenol); platinum; manganese dioxide; silver. Incompatible with acetone; catalysts; fibers. When heated to decomposition it emits toxic fumes of SOx. See also PEROXIDES, INORGANIC; PEROXIDES, ORGANIC.
RIDADR: 1483
HazardClass: 5.1
PackingGroup: II
The laboratory scale preparation of Caro's acid involve the combination of chlorosulfuric acid and hydrogen peroxide.
H2O2 + ClSO2OH → H2SO5 + HCl
Large scale production of Caro's acid is usually done on site, due to its instability. According to the patent by Martin, Caro's acid is produced by reacting >85% sulfuric acid and >50% hydrogen peroxide ("Piranha solution").
H2O2 + H2SO4 → H2SO5 + H2O
Peroxymonosulfuric Acid (CAS NO.7722-86-3) is H2SO5, a liquid at room temperature. In this acid, the S(VI) center adopts its characteristic tetrahedral geometry; the connectivity is indicated by the formula HO-O-S(O)2-OH. It is sometimes confused with H2S2O8, known as peroxydisulfuric acid. The disulfuric acid, which appears to be more widely used as its alkali metal salts, has the structure HO-S(O)2-O-O-S(O)2-OH. As with all strong oxidizing agents, Peroxymonosulfuric Acid should be kept away from organic compounds such as ethers and ketones because of its ability to peroxidize the compound, creating a highly unstable molecule such as acetone peroxide.