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Potassium Dichromate
CAS: 7778-50-9 | H2Cr2K2O7
2D Structure
3D Structure
Loading 3D structure...
Basic Information
CAS Registry Number:
7778-50-9
Molecular Formula:
H2Cr2K2O7
Molecular Mass:
296.20 g/mol
Names and Synonyms:
Potassium Dichromate
Chromic acid (H2Cr2O7), potassium salt (1:2)
Dichromic acid (H2Cr2O7), dipotassium salt
Chromic acid (H2Cr2O7), dipotassium salt
Potassium dichromate
Potassium bichromate
Potassium dichromate (K2(Cr2O7))
Dichromic acid dipotassium salt
Dipotassium dichromate
Dipotassium dichromate (K2Cr2O7)
Potassium dichromate(VI)
Dipotassium bichromate
Dipotassium bichromate (K2Cr2O7)
Chromium potassium oxide (K2Cr2O7)
SRM 935a
Dipotassium dichromium heptaoxide
C 501
Identifiers:
SMILES:
[Cr+].[Cr+].[K].[K].[OH-].[OH-].[O].[O].[O].[O].[O]
InChI:
InChI=1S/2Cr.2K.2H2O.5O/h;;;;2*1H2;;;;;/q2*+1;;;;;;;;;/p-2
Key Properties
Melting Point
398 °C
CAS Common Chemistry
Density
2.68 g/cm³
CAS Common Chemistry
Spectral Data
NMR, IR, and Mass spectral data
1H NMR
13C NMR
Predicting NMR spectra...
10 ppm
9
8
7
6
5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 296.20 g/mol | CAS Common Chemistry |
| 296.19700000000006 g/mol | RDKit | |
| 295.788480764 g/mol | RDKit | |
| Density | 2.68 g/cm³ | CAS Common Chemistry |
| 2.676 g/cm3 @ Temp: 25 °C | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Potassium_dichromate | CAS Common Chemistry |
| Canonical SMILES | [K].O=[Cr](=O)(O)O[Cr](=O)(=O)O | CAS Common Chemistry |
| InChI | InChI=1S/2Cr.2K.2H2O.5O/h;;;;2*1H2;;;;;/q2*+1;;;;;;;;;/p-2 | CAS Common Chemistry |
| InChI Key | InChIKey=WFNKVMJUPPUFIO-UHFFFAOYSA-L | CAS Common Chemistry |
| Melting Point | 398 °C | CAS Common Chemistry |
| Name | Potassium dichromate | CAS Common Chemistry |
| Heavy Atom Count | 11 | RDKit |
| Hydrogen Bond Acceptors | 2 | RDKit |
| Hydrogen Bond Donors | 0 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 202.5 Ų | RDKit |
| LogP | -1.7142000000000002 | RDKit |
| Molar Refractivity | 18.8121 | RDKit |
