Substance profile
Potassium Chromate
Potassium Chromate is yellow orthorhombic crystals and is odorless.
01 · Identification
What Potassium Chromate is
Potassium Chromate is yellow orthorhombic crystals and is odorless. Its molecular formula is CrK2O4 and its molecular weight is 194.19 g/mol. It boils at 1000 °C, melts at 975 °C.
Under the GHS it carries the signal word Danger. It is classed as carcinogens.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H350i | May cause cancer by inhalation. |
| H340 | May cause genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P261, P264, P272, P273, P280, P302, P305, P308, P313, P332, P333, P337, P338, P352, P391, P501
03 · Physical and chemical properties
Potassium Chromate properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 1000 °C (1832 °F) | ICSC | |
| Melting point | 975 °C (1787 °F) | HSDB | |
| 968 °C (1774.4 °F) | ICSC | ||
| 974 °C (1785.2 °F) | DOE PAC | ||
| Density | 2.73 g/cm³ | HSDB | |
| 2.73 g/cm³ | at 18 °C | CAMEO | |
| Solubility | In water, 39.96 wt% at 20 °C; 45.0 wt% at 100 °C | at 20 °C | HSDB |
| 62.9 g/100 cc water at 20 °C; 79.2 g/100 cc water at 100 °C | at 20 °C | HSDB | |
| In water, 65.0 g/100 g water at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | Zero | HSDB | |
| Vapor pressure at 20 °C: negligible | at 20 °C | ICSC | |
| Corrosivity | Corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Potassium Chromate
Storage conditions
Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Organic materials, powdered metals, strong oxidizing agents
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Potassium Chromate in the storage compatibility matrix →