Zinc chromate
Zinc chromate is an inorganic compound with formula ZnCrO4.
- 1Names
- 2Formulae and structures
- 3Properties
- 4Constituents
- 5Thermodynamic properties
- 6Solubility
- 7Hazards
- 8Preparations
- 9Chemical reactions
- 10References
- 11Related substances
- 12Related categories
Names
List of substance names
- Typical name
- Zinc chromate
- Compositional nomenclature
- Zinc chromate
- Additive nomenclature
- Zinc tetraoxidochromate(2−)
- Other names
- –
Formulae and structures
List of formulae
- Typical formula
- ZnCrO4
- Compositional formula
- ZnCrO4
- Structural formula
- Other structural formulas
- Lewis structure
- Colored Lewis structure
Properties
List of substance properties
- Name
- Zinc chromate
- Formula
- ZnCrO4
- Appearance
- Yellow solid
- Odor
- Odorless
- Molar mass
- 181.37 g/mol
- Density
- 3.40 g/cm3[1]Solid
- Melting point
- –
- Boiling point
- –
Constituents
Constituent ions
| Ion | Name | Charge number | Number |
|---|---|---|---|
| Zn2+ | Zinc ion | 2 | 1 |
| CrO42− | Chromate ion | -2 | 1 |
Constituent atoms
| Atom | Name | Oxidation state | Number |
|---|---|---|---|
| Zn | Zinc | +2 | 1 |
| Cr | Chromium | +6 | 1 |
| O | Oxygen | −2 | 4 |
Ratio of atoms
| Atom | Atomic weight | Number | Atomic ratio | Weight ratio |
|---|---|---|---|---|
| Zn | 65.38 | 1 | 16.67% | 36.05% |
| Cr | 51.9961 | 1 | 16.67% | 28.67% |
| O | 15.999 | 4 | 66.67% | 35.28% |
Thermodynamic properties
Phase transition properties
- Enthalpy of fusion
- –
- Enthalpy of vaporization
- –
- Enthalpy of vaporization at 25°C
- –
- Enthalpy of other transition
- –
Solubility
Qualitative solubility
Hazards
GHS label[2]
- Hazard pictograms
- Signal word
- Danger
- Hazard statements
- H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H317: May cause an allergic skin reaction
- H341: Suspected of causing genetic defects
- H350: May cause cancer
- H361: Suspected of damaging fertility or the unborn child
- H370: Causes damage to organs
- H370: Causes damage to central nervous system
- H370: Causes damage to respiratory system
- H370: Causes damage to cardiovascular system
- H370: Causes damage to blood system
- H370: Causes damage to liver
- H370: Causes damage to kidney
- H372: Causes damage to organs through prolonged or repeated exposure
- H372: Causes damage to respiratory system through prolonged or repeated exposure
Physical hazards[2]
Health hazards[2]
Environmental hazards[2]
Preparations
Reaction of acid and base
The reaction of acid and base can yield zinc chromate.
Reaction of base and acidic oxide
The reaction of zinc hydroxide and chromium(VI) oxide yields zinc chromate and water.
Reaction of basic oxide and acid
The reaction of basic oxide and acid can yield zinc chromate.
Reaction of basic oxide and acidic oxide
The reaction of zinc oxide and chromium(VI) oxide yields zinc chromate.
Precipitation reaction
When zinc ion and chromate ion react in aqueous solution, a precipitate of zinc chromate is formed.
Reaction of active metal and acid
The reaction of and chromic acid yields zinc chromate and .
Reaction of active metal, acidic oxide, and water
The reaction of , chromium(VI) oxide, and water yields zinc chromate and .
Chemical reactions
Electrolytic dissociation
Electrolytic dissociation of zinc chromate yields zinc ion and chromate ion.
Reaction with strong acid
The reaction of zinc chromate and strong acid yields salt of strong acid and chromic acid.
Reaction with strong base
The reaction of zinc chromate and strong base yields salt of strong base and zinc hydroxide.
Reaction with reducing species
The reaction of reducing species and zinc chromate yields a variety of products.
Reaction with oxidizable species
The reaction of oxidizable species and zinc chromate yields a variety of products.
Reaction with oxidizable species under acidic condition
The reaction of oxidizable species, zinc chromate, and hydrogen ion yields a variety of products.
Reaction with oxidizable species under neutral condition
The reaction of oxidizable species, zinc chromate, and water yields a variety of products.
Reaction with hardly oxidizable species
The reaction of hardly oxidizable species and zinc chromate yields a variety of products.
Reaction with hardly oxidizable species under acidic condition
The reaction of hardly oxidizable species, zinc chromate, and hydrogen ion yields a variety of products.
Reaction with hardly oxidizable species under neutral condition
The reaction of hardly oxidizable species, zinc chromate, and water yields a variety of products.
Decomposition
Decomposition of zinc chromate yields zinc oxide and chromium(VI) oxide.
Hydrolysis
The reaction of zinc chromate and water yields zinc hydroxide and acid/acid salt/hydride.
References
List of references
- 1James G. Speight (2017)Lange's Handbook of Chemistry, 17th editionMcGraw Hill Education
- 2Chemical Management CenterGHS Classification ResultsNational Institute of Technology and Evaluation
