Chromates
Potassium dichromate (31255)
puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., assay min. 99.8%
Overview
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. It is used in painting, printing, electroplating and pyrotechnics.
Specifications
General Information
- Molar Mass
- 294.18 g/mol
- CAS Number
- 7778-50-9
- Linear Formula
- K2Cr2O7
Physical Properties
- Density
- 2.7 g/cm3 (20 °C)
- Boiling Point/Range
- Decomposes on heating.
- pH
- 3.5 (20 °C)
- Vapor Pressure
- No data available hectopascal
- Color
- Orange
- Melting Point/Range
- 398 °C
- Physical Form
- Crystalline powder
- Odor
- Odorless
Safety Information
- Self Ignition
- Not auto-flammable
- Incompatible Materials
- Reducing agents, Hydrazine, Combustible material, Organic materials, Corrosive in contact with metals
- Oxidizing
- The substance or mixture is classified as oxidizing with the category 2.
- Flammability
- The product is not flammable.
- Chemical Stability
- Stable under recommended storage conditions.
- Thermal Decomposition
- 500 °C
International Transportation
- Packing Group
- II
- Chemical Class
- 6.1
- Harmonized System Code
- 2841501000
- UN Number
- 3086
- Sub Class 1
- 5.1
General Information
- Molar Mass
- 294.18 g/mol
- CAS Number
- 7778-50-9
- Linear Formula
- K2Cr2O7
Physical Properties
- Density
- 2.7 g/cm3 (20 °C)
- Boiling Point/Range
- Decomposes on heating.
- pH
- 3.5 (20 °C)
- Vapor Pressure
- No data available hectopascal
- Color
- Orange
- Melting Point/Range
- 398 °C
- Physical Form
- Crystalline powder
- Odor
- Odorless
Safety Information
- Self Ignition
- Not auto-flammable
- Incompatible Materials
- Reducing agents, Hydrazine, Combustible material, Organic materials, Corrosive in contact with metals
- Oxidizing
- The substance or mixture is classified as oxidizing with the category 2.
- Flammability
- The product is not flammable.
- Chemical Stability
- Stable under recommended storage conditions.
- Thermal Decomposition
- 500 °C
International Transportation
- Packing Group
- II
- Chemical Class
- 6.1
- Harmonized System Code
- 2841501000
- UN Number
- 3086
- Sub Class 1
- 5.1
- Molar Mass : 294.18 g/mol
- CAS Number : 7778-50-9
- Linear Formula : K2Cr2O7
- Density : 2.7 g/cm3 (20 °C)
- Boiling Point/Range : Decomposes on heating.
- pH : 3.5 (20 °C)
- Vapor Pressure : No data available hectopascal
- Color : Orange
- Melting Point/Range : 398 °C
- Physical Form : Crystalline powder
- Odor : Odorless
- Self Ignition : Not auto-flammable
- Incompatible Materials : Reducing agents, Hydrazine, Combustible material, Organic materials, Corrosive in contact with metals
- Oxidizing : The substance or mixture is classified as oxidizing with the category 2.
- Flammability : The product is not flammable.
- Chemical Stability : Stable under recommended storage conditions.
- Thermal Decomposition : 500 °C
- Packing Group : II
- Chemical Class : 6.1
- Harmonized System Code : 2841501000
- UN Number : 3086
- Sub Class 1 : 5.1
Property
Value
assay
Min. 99.8 %
water insoluble matter
Max. 0.005 %
loss on drying (105°C)
Max. 0.05 %
calcium (Ca)
Max. 0.002 %
copper (Cu)
Max. 0.001 %
iron (Fe)
Max. 0.001 %
sodium (Na)
Max. 0.01 %
lead (Pb)
Max. 0.005 %
chloride (Cl)
Max. 0.001 %
sulfate (SO4)
Max. 0.005 %
