Potassium chlorate

Potassium chlorate
Names
	Other names Potassium chlorate(V), Potcrate, Berthollet salt
Identifiers
CAS Number	3811-04-9 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL3188561;
ChemSpider	18512 ;
ECHA InfoCard	100.021.173
EC Number	223-289-7;
PubChem CID	6426889;
RTECS number	FO0350000;
UNII	H35KS68EE7 ;
UN number	1485
CompTox Dashboard (EPA)	DTXSID6047448 ;
	InChI InChI=1S/ClHO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 Key: VKJKEPKFPUWCAS-UHFFFAOYSA-M ; InChI=1/ClHO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 Key: VKJKEPKFPUWCAS-REWHXWOFAC;
	SMILES [K+].[O-]Cl(=O)=O;
Properties
Chemical formula	KClO3
Molar mass	122.55 g mol−1
Appearance	white crystals or powder
Density	2.32 g/cm3
Melting point	356 °C (673 °F; 629 K)
Boiling point	400 °C (752 °F; 673 K) decomposes
Solubility in water	3.13 g/100 mL (0 °C); 4.46 g/100 mL (10 °C); 8.15 g/100 mL (25 °C); 13.21 g/100 mL (40 °C); 53.51 g/100 mL (100 °C); 183 g/100 g (190 °C); 2930 g/100 g (330 °C)
Solubility	soluble in glycerol; negligible in acetone and liquid ammonia
Solubility in glycerol	1 g/100 g (20 °C)
Magnetic susceptibility (χ)	−42.8·10−6 cm3/mol
Refractive index (nD)	1.40835
Structure
Crystal structure	monoclinic
Thermochemistry
Heat capacity (C)	100.25 J/mol·K
Std molar; entropy (S⦵298)	142.97 J/mol·K
Std enthalpy of; formation (ΔfH⦵298)	−391.2 kJ/mol
Gibbs free energy (ΔfG⦵)	-289.9 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H271, H302, H332, H411
Precautionary statements	P220, P273
NFPA 704 (fire diamond)	2 0 3 OX
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	1870 mg/kg (oral, rat)
Safety data sheet (SDS)	ICSC 0548
Related compounds
Other anions	Potassium bromate; Potassium iodate; Potassium nitrate
Other cations	Ammonium chlorate; Sodium chlorate; Barium chlorate
Related compounds	Potassium chloride; Potassium hypochlorite; Potassium chlorite; Potassium perchlorate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO₃. In its pure form, it is a white crystalline substance. After sodium chlorate, it is the second most common chlorate in industrial use. It is a strong oxidizing agent and its most important application is in safety matches. In other applications it is mostly obsolete and has been replaced by safer alternatives in recent decades. It has been used

in fireworks, propellants and explosives,
to prepare oxygen, both in the lab and in chemical oxygen generators,
as a disinfectant, for example in medical mouthwashes,
in agriculture as an herbicide.

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