Caesium chromate
| Caesium chromate | |
|---|---|
| IUPAC name | caesium chromate |
| Identifiers | |
| InChI | InChI=1/Cr.2Cs.4O/q;2*+1;;;2*-1/rCrO4.2Cs/c2-1(3,4)5;;/q-2;2*+1 |
| InChIKey | BROHICCPQMHYFY-UICSPCLAAP |
| Standard InChI | InChI=1S/Cr.2Cs.4O/q;2*+1;;;2*-1 |
| Standard InChIKey | BROHICCPQMHYFY-UHFFFAOYSA-N |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| PubChem | |
| Properties[1] | |
| Molecular formula | CrCs2O4 |
| Molar mass | 381.8 g mol−1 |
| Appearance | Yellow crystalline solid |
| Density | 4.237 g/cm3 |
| Solubility in water | 71.4 g/100 ml (13 ºC) |
| Hazards[2][3] | |
| EU index number | 024-017-00-8 |
| GHS pictograms |   
|
| GHS signal word | DANGER |
| GHS hazard statements | H350, H317, H410 |
| Flash point | non-flammable |
| PEL (U.S.) | 0.005 mg/m3 (as CrO3) |
| Related compounds | |
| Other anions | Caesium molybdate |
| Other cations | Lithium chromate Sodium chromate Potassium chromate Rubidium chromate |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Caesium chromate is used to produce caesium vapour by reaction with silicon or boron, which is used to in the final stages of creating vacuum tubes; the caesium vapour reacts with the remaining gases, including nitrogen and oxygen.[4]
References
- ↑ CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-91. ISBN 0-8493-0462-8.
- ↑ Index no. 024-017-00-8 of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 419.
- ↑ 29 CFR 1910.1026 (71 FR 10374, Feb. 28, 2006, as amended).
- ↑ Emsley, John Nature's Building Blocks: An A-Z Guide to the Elements; Oxford University Press: Oxford, 2001; p 81. ISBN 0198503407.
Further reading
- Chromium and Chromium Compounds. In Chromium, Nickel and Welding; IARC Monographs on the Evaluation of Carcinogenic Risks to Humans 49; International Agency for Research on Cancer: Lyon, France, 1990; pp 49–446. ISBN 92-832-1249-5.
External links
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