About
Potassium chromate is an inorganic compound with the formula (K2CrO4. This yellow solid is the potassium salt of the chromate anion. It is a common laboratory chemical. It is a class two carcinogen.
GRADES: EXTRA PURE / LR / ER ACS / AR / GR / AR ACS
Molar mass: 194.19 g·mol−1
Potassium Chromate is Yellow Powder
Potassium Chromate is odorless. It is a lemon-yellow crystalline solid. It is highly soluble in water and insoluble in alcohol.
Laboratory Reagent also, Potassium chromate enjoys a wide variety of industrial uses. In the textile industry, manufacturers use potassium chromate to tan leather and dye clothing items and fabrics.
Local – 50kg HDPE Bag with Airtight inside polylinner
Export- 50 kg fibre drums.
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Physical Properties
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Odour
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Odourless
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Density
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2.7320 g/cm3
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Melting point
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968 °C (1,774 °F; 1,241 K)
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Boiling point
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1,000 °C (1,830 °F; 1,270 K)
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Solubility in water
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62.9 g/100 mL (20 °C), 75.1 g/100 mL (80 °C), 79.2 g/100 mL (100 °C)
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Solubility
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insoluble in alcohol
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Refractive index (nD)
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1.74
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Specification - Potassium Chromate
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Test
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Extra Pure / LR / ER ACS
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Description
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Lemon Yellow Fine Crystals
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Identity
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K: Passes Test CrO4 passes test
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Assay % w/w
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NLT 99%
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PH value (5% w/w water)
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8.5 – 10.0
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Chloride ( Cl )% w/w
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NMT 0.01%
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Sulphate ( SO4)
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NMT 0.05%
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Calcium (Ca)
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NMT 0.01%
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Loss on drying ( 105° C)
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NMT 1%
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Test
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Extra Pure / LR / ER ACS
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Description
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Lemon yellow crystals or crystalline powder
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Solution(10% w/v aqueous)
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Should be clear
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Assay % w/w
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99.5 – 100.5
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Insoluble matter % w/w
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0.003
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Acidity % w/w
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NIL
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Alkalinity % w/w
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1 ml NLT 1%
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Chloride ( Cl ) % w/w
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0.001
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Sulphate ( SO4)% w/w
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0.02
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Aluminium (Al) % w/w
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0.003
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Calcium (Ca)% w/w
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0.005
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Sodium (Na) % w/w
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0.05
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