Strontium chromate refers to a chemical compound that is a light yellow powder or granular solid and insoluble in water. Its chemical formula is srcro4.
Strontium chromate is a crystalline and inorganic compound. When it is heating, toxic chromium fumes are emitted. It is a strong oxidizing agent and extremely corrosive, and has many applications.
Strontium chromate is a common corrosion inhibitor. It provides excellent corrosion resistance for metal substrates, particularly aluminum substrates.
It is also used as a pigment, a protective coating, and in pyrotechnics. It has applicability as an anti-corrosive primer for zinc, magnesium, aluminum and alloys used in aircraft manufacturing.
Properties
Chemical formula, srcro4
Molar mass, 203.614 g/mol
Appearance, yellow powder
Density, 3.353 g/cm3
Solubility in water, 0.12 g/100 ml (15 â°c)
3 g/100 ml (100 â°c)
Solubility, soluble in dilute acids and ammonia
Applications, corrosion inhibitor in pigments
In electrochemical processes to control sulfate concentration of solutions
Colorant in polyvinyl chloride resins
Pyrotechnics
Chrome plating
Aluminum flake coatings
Metal conditioner
Potassium chromate is the inorganic compound with the formula (k2cro4).
This yellow solid is the potassium salt of the chromate anion. It is a common
Laboratory chemical, whereas sodium chromate is important industrially.It is a
Class two carcinogen.
[applications]
Unlike the less expensive sodium salt, potassium salt is mainly used for laboratory work in situations where an anhydrous salt is required.
It is as an oxidizing agent in organic synthesis. It is used as in qualitative inorganic analysis, e.G. As a colorimetric test for silver ion.
Properties
Chemical formula, crk2o4
Molar mass, 194.19 gâ·molâ??1
Appearance, yellow powder
Odor, odorless
Density, 2.7320 g/cm3
Melting point, 968 â°c
Boiling point, 1000 â°c
Solubility in water, 62.9 g/100 ml (20 â°c)
75.1 g/100 ml (80 â°c)
79.2 g/100 ml (100 â°c)
Solubility, insoluble in alcohol
[health risks]
As with other chromate compounds, potassium chromate can cause harm to your health if you ingest or inhale this chemical. Potassium chromate is a known carcinogen and can cause cancer. Further, potassium chromate is a poison, and ingesting large amounts of this substance can kill you.
In nature, potassium chromate only occurs in a few remote areas of the atacama desert in south america. Additionally, potassium chromate can cause birth defects in the event of fetal exposure to this chemical.
Potassium Dichromate is an orange to red colored, crystalline, inorganic compound that emits toxic chromium fumes upon heating. Potassium dichromate is highly corrosive and is a strong oxidizing agent.
Sodium chromate is the inorganic compound with the formula na2cro4.
It exists as a yellow hygroscopic solid, which can form tetra-, hexa-, and
Decahydrates. It is an intermediate in the extraction of chromium from its
Ores.
Sodium chromate, like other hexavalent chromium compounds, is toxic and
Carcinogenic.
[uses]
Aside from its central role in the production of chromium from its ores,
Sodium chromate is used as a corrosion inhibitor in the petroleum industry.
It is also a dyeing auxiliary in the textile industry and a wood preservative.
It is a diagnostic pharmaceutical in determining red blood cell volume.
In organic chemistry, sodium chromate is used as an oxidant, converting
Primary alcohols to carboxylic acids and secondary alcohols to ketones.
Properties
Chemical formula, na2cro4
Molar mass, 161.97 g/mol
Appearance, yellow crystals
Odor, odorless
Density, 2.698 g/cm3
Melting point, 792 c (anhydrous)
20 c (decahydrate)
Solubility in water, 31.8 g/100 ml (0 c)
84.5 g/100 ml (25 c)
126.7 g/100 ml (100 c)
Solubility, slightly soluble in ethanol
Solubility in methanol, 0.344 g/100 ml (25 c)
