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Caroat is a white, free-flowing, white granular, and powerful oxygen-based oxidizing agent manufactured by United Initiators.
Caroat is widely used for non-chlorine pool shock, denture cleaning, bleaching, disinfectant applications, and industrial water treatment because it does not produce chloramines or odors.
Caroat, monopersulfate compound is a potassium triple salt mainly used as a stable, easy to handle and nontoxic oxidant.
CAS: 70693-62-8
MF: H3K5O18S4
MW: 614.74
EINECS: 274-778-7
Synonyms
Potassium peroxymonosulfate,Active Oxygen≥4.5%;Potassium hydrogen monopersulfate;Potassium peroxymonosulfate joyce;OXONE, MONOPERSULFATE COMPOUNDOXONE, MONOPERSULFATE COMPOUNDOXONE, MONOPERSULFATE COMPOUND;Potassiumhydrogenperoxymonosulfate;PotassiuM 3-sulfotrioxidan-1-ide;Oxone , potassium monopersulfate;potassium peroxymonopersulfate
Caroat, also referred to as potassium peroxysulfate and potassium monopersulfate (KMPS), is an inorganic compound with the formula KHSO5.
Caroat is the mono-potassium salt derived from peroxymonosulfuric acid (Caro's acid).
Caroat is a constituent of the widely used oxidizing agent called Oxone, which is a triple salt with the formula 2KHSO5·KHSO4·K2SO4.
Related salts
Organic-soluble derivatives of peroxymonosulfate include the tetra-n-butylammonium, tetraphenylphosphonium, and benzyltriphenylphosphonium salts:
(nBu4N)HSO5, (Ph4P)HSO5, and (BnPh3P)HSO5.
The ammonium and sodium salts of HSO−5 are also known.
Caroat is a potassium monopersulfate triple salt with the composition potassium monopersulfate (2 KHSO₅), potassium hydrogen sulfate (KHSO₄) and potassium sulfate (K₂SO₄).
Caroat is the only stable and safe carrier of the desired active compound KHSO₅, with advantages including:
Sparkling clear water; a powerful oxidizer (high oxidation potential)
No chloramines or chlorine odour’s
No unhealthy THMs – oxygen-based, doesn’t contain chlorine
Unaffected by UV degradation – can be used day and night
Fast dissolving, harmless, non-toxic – same day shock and swim
Increases efficiency of the sanitizer; compatible with sanitizers based on chlorine, bromine and other non-halogen based alternatives
Caroat is supplied as a free-flowing and stable powder with a high quality consistency and a long storage life under cool and dry conditions.
Caroat Chemical Properties
density: 1.15
vapor pressure: <0.0000017 hPa
storage temp.: Store at <= 20°C.
solubility: 250-300g/l soluble
form: solid
Specific Gravity: 1.12-1.20
color: white
PH: 2-3 (10g/l, H2O, 20℃)
Odor: Odorless
Water Solubility: Soluble in water (100 mg/ml).
Sensitive: Hygroscopic
Exposure limits ACGIH: TWA 0.1 mg/m3
Stability: Stable. Oxidizer. Incompatible with combustible materials, bases.
Cosmetics Ingredients Functions: OXIDISING
InChI: 1S/5K.2H2O5S.2H2O4S/c;;;;;2*1-5-6(2,3)4;2*1-5(2,3)4/h;;;;;2*1H,(H,2,3,4);2*(H2,1,2,3,4)/q5*+1;;;;/p-5
InChIKey: HVAHYVDBVDILBL-UHFFFAOYSA-M
LogP: -3.9 at 25℃
CAS DataBase Reference: 70693-62-8(CAS DataBase Reference)
EPA Substance Registry System: Caroat (70693-62-8)
Structure
The structure of the monohydrate has been confirmed by X-ray crystallography.
This analysis reveals the expected tetrahedral sulfur center, an O-O bond length of 146 picometers, and an SOOH dihedral angle of 90°.
Uses
PCB metal surface treatment chemical and water treatment etc.
Oxone is used for halogenation of a,b-unsaturated carbonyl compounds and catalytic generation of hypervalent iodine reagents for alcohol oxidation.
Caroat is a used for rapid, and good synthesis of oxaziridines.
The title compound is the active ingredient in oxone, which is a common disinfectant and whitening agent.
Caroat has also been investigated for use in processes aimed at delignification of wood.
Underlying these uses is the high redox potential, which for potassium peroxymonosulfate, per se, is +1.81 V.
Reactions
Reagent for the catalytic asymmetric Shi epoxidation
Reagent for the synthesis of nitro heteroaromatics in water
Reagent for the syntheses of benzoxazoles and benzothiazoles using aryl iodides via C-H functionalization and C-O/S bond formation
Reagent used for bromolactonization in the asymmetric total synthesis of (+)-Dubiusamine C
Reagent for the benzofuran oxidative dearomatization cascade in the total synthesis of Integrastatin B.
Purification Methods
Caroat is a stable form of Caro's acid and should contain >4.7% of active oxygen.
Caroat can be used in EtOH/H2O and EtOH/AcOH/H2O solutions.
If active oxygen is too low.
Caroat is best to prepare it afresh from 1mole of KHSO5, 0.5mole of KHSO4 and 0.5mole of K2SO4.
A rapid preparation of Caro's acid is made by stirring finely powdered potassium persulfate (M 270.3) into ice-cold conc H2SO4 (7mL) and when homogeneous add ice (40-50g).
Caroat is stable for several days if kept cold.
Keep away from organic matter as it is a STRONG OXIDANT.
A detailed preparation of Caro's acid (hypersulfuric acid, H2SO5) in crystalline form m ~45o from H2O2 and chlorosulfonic acid was described by Fehér in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 388 1963.
