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12634

Sigma-Aldrich

Potassium chlorate

puriss., 99-101%

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About This Item

Linear Formula:
KClO3
CAS Number:
3811-04-9
Molecular Weight:
122.55
EC Number:
223-289-7
MDL number:
MFCD00011361
UNSPSC Code:
12352300
PubChem Substance ID:
329749781
NACRES:
NA.21

grade

puriss.

Quality Level

200

Assay

99-101%

form

powder or crystals

impurities

≤0.001% heavy metals (as Pb)

pH

5-6.5 (25 °C, 61.3 g/L)

mp

356 °C (lit.)

anion traces

chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

As: ≤2 mg/kg
Ca: ≤50 mg/kg
Fe: ≤30 mg/kg

SMILES string

[K+].[O-]Cl(=O)=O

InChI

1S/ClHO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1

InChI key

VKJKEPKFPUWCAS-UHFFFAOYSA-M

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General description

Crystals of potassium chlorate belong to the monoclinic crystal system. On heating above 400°C, it degrades to give potassium chloride and potassium perchlorate. It has strong oxidizing properties. On exposure to X-rays, oxygen-17 enriched KClO3 generates O3- radical, which was investigated by ESR (Electron Spin Resonance). Irradiation of potassium chlorate with X-ray causes the degradation to generate chloride, chlorite, hypochlorite and occluded oxygen. Significant quantities of dichlorine hexoxide and a trace of chlorine dioxide were also produced.

Application

Potassium chlorate may be used in the preparation of graphite oxide (GO).

Signal Word

Danger

Hazard Statements

H271 - H302 + H332 - H411

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 2 - Ox. Sol. 1

Storage Class Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The Decomposition of Solid Potassium Chlorate by X Rays.
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Chemistry of Materials, 19(18), 4396-4404 (2007)
ESR Spectrum of O-3 Trapped in a Single Crystal of Potassium Chlorate.
Schlick S.
J. Chem. Phys., 56, 654-661 (1972)
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