Chemistry:Strontium chlorate
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3D model (JSmol)
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| Properties | |
| Sr(ClO 3) 2 | |
| Molar mass | 254.51 g·mol−1 |
| Appearance | colorless or white crystals |
| Density | 3.15 g/cm3 |
| Melting point |
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| 174.9 g/100 mL (18 °C (64 °F; 291 K)) | |
| Solubility in ethanol | soluble (in dilute), insoluble (in absolute) |
| 73.0×10−6 cm3/mol | |
Refractive index (nD)
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1.516, 1.605, & 1.626 |
| Structure | |
| rhombic | |
| Hazards[2] | |
| GHS pictograms |   
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| GHS Signal word | Danger |
| H271, H302, H312, H315, H320, H332, H335, H411 | |
| P210, P220, P221, P261, P273, P280, P301+312, P302+352, P304+340, P305+351+338, P332+313 | |
| NFPA 704 (fire diamond) | |
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Other anions
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Other cations
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Strontium chlorate is a chemical compound with the formula Sr(ClO
3)
2. It is a strong oxidizing agent. It exists in several hydrated forms; the monohydrate (Sr(ClO
3)
2 · H2O), the trihydrate (Sr(ClO
3)
2 · 3H2O), and the octahydrate (Sr(ClO
3)
2 · 8H2O)[1]
It has been used as an oxidizing agent in explosive mixtures, where it has a cooling effect because of the large amount of water of crystallization. It has also been used in a published Italian pyrotechnic violet star formula.[1]
Preparation
Strontium chlorate may be prepared by neutralizing an aqueous chloric acid (HClO
3) solution with Sr(OH)
2 or strontium carbonate (SrCO
3) and then warming this solution over concentrated sulfuric acid (H
2SO
4). The anhydrous salt may be prepared by heating any of the hydrates to 120 °C (248 °F).[1]
It may also be prepared by warming a solution of strontium hydroxide and bubbling chlorine through it, with subsequent crystallization. Chlorine has no action on dry Sr(OH)
2, but it converts the hydrate (Sr(OH)
2 · 8H2O) into strontium chloride (SrCl
2) and chlorate, with a small quantity of strontium hypochlorite also being produced.[3]
References
- ↑ 1.0 1.1 1.2 1.3 Fedoroff, Basil T.; Sheffield, Oliver E.; Clift, George D.; Reese, Earl F. (1 January 1962). "C - Chlorates - Strontium chlorate". Encyclopedia of Explosives and Related Items.. 2. Picatinny Arsenal, NJ: Army Armament Research Development And Engineering Center, Picatinny Arsenal - Warheads Energetics And Combat Support Armaments Center. p. C200. AD0422747, PATR 2700. https://apps.dtic.mil/sti/pdfs/AD0422747.pdf.
- ↑ "SDS - Strontium chlorate". Pfaltz & Bauer Rare and Fine Chemicals. https://www.pfaltzandbauer.com/Files/SDSFile?fileName=S09546%20%20SDS%20%20031017.pdf.
- ↑ Konigel-Weisberg, J. (1 January 1879). "Ueber die Einwirkung von Chlorgas auf Barythydrat und Strontianhydrat". Berichte der Deutschen Chemischen Gesellschaft 12 (1): 511–513. doi:10.1002/cber.187901201147. https://zenodo.org/record/1425170.
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