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Potassium Chromate PWD
Potassium Chromate supreme supplier, manufacturers and exporters. Potassium Chromate is a yellowish, crystalline, inorganic compound that emits toxic chromium fumes upon heating. Potassium chromate is highly corrosive and is a strong oxidizing agent.
Yellow crystals, soluble in water.
Hazard: Toxic By ingestion and inhalation.
Used: Reagent in analytical chemistry, aniline black, chromate pigments.
Potassium Chromate is used in the qualitative inorganic analysis to detect the ions in aqueous solution. Potassium chromate is used in the manufacture of dyes. Potassium chromate is used in precipitation titrations as an indicator. Potassium chromate is used in the textile dyeing process. Potassium chromate is used in making inks and pigments for paints. Potassium chromate is used as a fungicide. Potassium chromate is used to make several other chromium compounds. It is used in the leaching process.
Potassium chromate primarily affects the nose, throat and lungs causing ulcerations, shortness of breath, bronchitis, pneumonia and asthma but can also affect the gastrointestinal tract, liver, kidneys and immune system. This substance is a known human carcinogen and is associated with an increased risk of developing lung cancer and cancer of the sinonasal cavity.
| Physical State | Solid |
| Appearance | yellow |
| Odor | odorless |
| pH | 8.6-9.8 (5% soln) |
| Vapor Pressure | 0 |
| Vapor Density | Not applicable |
| Evaporation Rate | Not applicable |
| Viscosity | Not applicable |
| Boiling Point | Not available |
| Freezing/Melting Point | 975 deg C |
| Autoignition Temperature | None reported |
| Flash Point | Not available |
| Decomposition Temperature | Not available |
| NFPA Rating |
(estimated) Health: 2; Flammability: 0; Reactivity: 0 |
| Explosion Limits, Lower | None reported |
| Upper | None reported |
| Solubility | Soluble |
| Specific Gravity/Density | 2.7320 |
| Molecular Formula | K2CrO4 |
| Molecular Weight | 194.20 |
|
Assay |
: |
Min.99.5 % |
|
pH ( 20' c; 5 %) |
: |
8.6 to 9.8 |
|
Insolubility in water |
: |
Max. 50 ppm |
|
CI (CHLORIDE) |
: |
Max. 10 ppm |
|
SO4 (sulphate) |
: |
Max. 100 ppm |
|
Ca ( Calcium) |
: |
Max. 50 ppm |
|
Cu ( Copper ) |
: |
Max 10 ppm |
|
Fe ( Iron) |
: |
Max. 15 ppm |
|
Na ( sodium ) |
: |
Max 0.03% |
|
Pb ( Lead) |
: |
Max 50 ppm |