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Molecule
Ammonium Dichromate
CAS: 7789-09-5 · H8Cr2N2O7
2D Structure
3D Structure
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Basic Information
- CAS Registry Number
- 7789-09-5
- Molecular Formula
- H8Cr2N2O7
- Molecular Mass
- 252.06 g/mol
Identifiers
CAS Registry Number
7789-09-5
SMILES
N.N.[Cr+].[Cr+].[OH-].[OH-].[O].[O].[O].[O].[O]
InChI Key
XAQCJVGGJJFLPP-UHFFFAOYSA-L
InChI
InChI=1S/2Cr.2H3N.2H2O.5O/h;;2*1H3;2*1H2;;;;;/q2*+1;;;;;;;;;/p-2
Names and Synonyms
- Ammonium Dichromate Common Name
- Chromic acid (H2Cr2O7), ammonium salt (1:2) Synonym
- Dichromic acid (H2Cr2O7), diammonium salt Synonym
- Chromic acid (H2Cr2O7), diammonium salt Synonym
- Ammonium bichromate Synonym
- Ammonium dichromate(VI) Synonym
- Ammonium dichromate Synonym
- Diammonium dichromate Synonym
- Ammonium chromate ((NH4)2Cr2O7) Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 252.06 g/mol | CAS Common Chemistry |
| 252.063 g/mol | RDKit | |
| 268.191 g/mol | chempirical lib | |
| Density | 2.16 g/cm³ | CAS Common Chemistry |
| 2.155 g/cm3 @ 25 °C | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Ammonium_dichromate | CAS Common Chemistry |
| Canonical SMILES | O=[Cr](=O)(O)O[Cr](=O)(=O)O.N | CAS Common Chemistry |
| InChI | InChI=1S/2Cr.2H3N.2H2O.5O/h;;2*1H3;2*1H2;;;;;/q2*+1;;;;;;;;;/p-2 | CAS Common Chemistry |
| InChI Key | InChIKey=XAQCJVGGJJFLPP-UHFFFAOYSA-L | CAS Common Chemistry |
| Name | Ammonium dichromate | CAS Common Chemistry |
| Heavy Atom Count | 11 | RDKit |
| Hydrogen Bond Acceptors | 4 | RDKit |
| Hydrogen Bond Donors | 2 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 272.5 Ų | RDKit |
| LogP | -0.6286 | RDKit |
| Molar Refractivity | 17.348300000000002 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.0 | RDKit |
| Exact Mass | 251.91416559600003 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
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200 ppm
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| Shift (ppm) | DEPT | Assignment |
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Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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MW = 252.06 g/mol; density = 2.160 g/mL. Edit any field — others recompute live.
