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K2Cr2O7

Compound Descriptions:

Structure Drawing
Formula:Cr2K2O7
Element System:Cr-K-O
Element Names:Oxygen, Potassium, Chromium
Molecular Weight:294.185 g/mol
Name(s):K2Cr2O7
Chromic acid (H2Cr2O7), dipotassium salt
Dichromic acid (H2Cr2O7), dipotassium salt
Chromium potassium oxide (K2Cr2O7)
Dichromic acid dipotassium salt
Dipotassium bichromate
Dipotassium bichromate (K2Cr2O7)
Dipotassium dichromate
Dipotassium dichromate (K2Cr2O7)
Dipotassium dichromium heptaoxide
Potassium dichromate (K2(Cr2O7))
Potassium dichromate(VI)
SRM 935a
Kaliumdichromat
Bichromate of potash
Dichromic acid, dipotassium salt
K Bichromate
Potassium chromate (K2Cr2O7)
Kaliumbichromat
Kaliumpyrochromat
CAS-RN:7778-50-9
EINECS:231-906-6 EINECS
Classification:no charge; 3fragments; ionic

European Regulations

5 matching entries in european regulations: Hazard, GHS, REACH, ECHA-pre, RoHS

Derivatives / Analogues

Analogueother metal: lithium dichromate 
Analogueother metal: Chromic acid (H2Cr2O7), disodium salt 

Landolt-Börnstein Citations:

Crystallography, Structure and Morphology

 Simple oxo-compounds of chromium (oxochromates) : K2Cr2O7 (I): Vol. III/7F XIX.1.1:14III/7f

Electrical Properties

 Piezooptic, elastooptic, rotooptic coefficients: Piezooptic and elastooptic coefficients: Vol. III/30a 5.2.2.11. p.85III/30A

Mechanical Properties

 Ternary systems: inorganic components A, B, and water: AgBr - J2: Vol. IV/1a 2.2.1:218, p.663 (mix)IV/1a
 Inorganic substances - water: CaSO4 - CsClO4: Vol. IV/1b 1.2:86, p.26 (mix)IV/1b

References

III/30A
Short: III/30A
Title: High Frequency Properties of Dielectric Crystals: Piezooptic and Electrooptic Constants
Author: Cook, W.R.; Nelson, D.F.; Vedam, K.
Editor: Nelson, D.F.
Source: Landolt-Börnstein, New Series
Volume: III/30A
Year: 1996
Keyword: Dielectric Crystals; High Frequency Properties; Piezooptic and Electrooptic
ISBN: 3-540-54412-7
ISBN: 978-3-540-54412-8
Internet Resource: DOI:10.1007/b44186
RefComment: 411 figs., XII, 497 pages, Hardcover
Abstract: While vols. III/29 A, B (published in 1992 and 1993, respectively) contain the low frequency properties of dielectric crystals, in vol. III/30 the high frequency or optical properties are compiled. The present and first subvolume 30 A contains piezooptic and elastooptic constants, linear and quadratic electrooptic constants and their temperature coefficients, and relevant refractive indices. Subvolume 30 B will cover second and third order nonlinear optical susceptibilities. For the reader's convenience an alphabetical formula index and an alphabetical index of chemical, mineralogical and technical names for all substances of volumes 29 A, B and 30 A are included.
III/7f
Short: III/7f
Title: Crystal Structure Data of Inorganic Compounds: Key Elements: d 4...d 8-Elements
Author: Pies, W.; Weiss, A.
Editor: Hellwege, K.-H.; Hellwege, A.M.
Source: Landolt-Börnstein, New Series
Volume: III/7f
Page: 1-778
Year: 1977
ISBN: 3-540-08080-5
ISBN: 978-3-540-08080-0
Internet Resource: DOI:10.1007/b19981
RefComment: 14 figs., XXVII, Hardcover
Abstract: Volume III/7 contains structure data on those compounds which contain at least one of the elements F, Cl, Br, I, O, N, and P and cannot be called "organic". The structure data of the remaining inorganic compounds and the elements are dealt with in volumes III/6 and III/14, while the organic compounds are treated in volumes III/5 and III/10. The systematic arrange-ment is based on the anions ordered according to "key elements", since this system allows the arrangement of the crystal structure data in such a way that both chemical and crystallographical relationships can be recognized. Structure data are compiled as completely as possible for all inorganic substances, where crystal structures have been examined by means of X-ray, neutron, and electron diffraction,and for which at least the lattice constants have been determined.
IV/1a
Short: IV/1a
Title: Densities of Liquid Systems: Nonaqueous Systems and Ternary Aqueous Systems
Author: Lacmann, R.; Synowietz, C.
Editor: Schäfer, Kl.
Source: Landolt-Börnstein, New Series
Volume: IV/1a
Year: 1974
ISBN: 3-540-06269-6
ISBN: 978-3-540-06269-1
Internet Resource: DOI:10.1007/b20003
RefComment: X, 716 pages. Hardcover
Abstract: Volume IV/1 contains information on the densities of liquid systems. It may be considered as a supplement to volume II/1 of the 6th Edition, which contains only a few data on nonaqueous systems. Data are not listed for all systems but primarily for those of greater interest where data for a larger range of concentrations were available.
IV/1b
Short: IV/1b
Title: Densities of Liquid Systems: Densities of Binary Aqueous Systems and Heat Capacities of Liquid Systems
Author: D'Ans, J.; Surawski, H.; Synowietz, C.
Editor: Schäfer, Kl.
Source: Landolt-Börnstein, New Series
Volume: IV/1b
Year: 1977
ISBN: 3-540-08272-7
ISBN: 978-3-540-08272-9
Internet Resource: DOI:10.1007/b20004
RefComment: 62 figs., VII, 335 pages. Hardcover
Abstract: Volume IV/1 contains information on the densities of liquid systems. It may be considered as a supplement to volume II/1 of the 6th Edition, which contains only a few data on nonaqueous systems. Data are not listed for all systems but primarily for those of greater interest where data for a larger range of concentrations were available.
EINECS
Short: EINECS
Title: EINECS (European Inventory of Existing Commercial Chemical Substances)
Source: Official Journal of the European Communities
Volume: C 146 A (15.06.1990)
Page: 1
Year: 1990
Publish_Date: 1990/06/15

  File created on 2009/18/08 by LCI Publisher GmbH (Gaja Peters, Inga Thede, Volkmar Vill, Ron Zenczykowski)
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