Chromates
Sodium dichromate dihydrate (31295)
analytical reagent, Reag. ACS, assay 99.5 - 100.5%
Overview
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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
- CAS Number
- 7789-12-0
- Synonyms
- Sodium bichromate
- Linear Formula
- Na2Cr2O7 · 2H2O
Physical Properties
- pH
- 3.5 (20 °C)
- Odor
- Odorless
- Color
- Orange
- Physical Form
- Crystalline powder
- Density
- 2.52 g/cm3 (20 °C)
- Boiling Point/Range
- Decomposes on heating.
- Melting Point/Range
- 320 °C
- Vapor Pressure
- No data available hectopascal
Safety Information
- Thermal Decomposition
- No decomposition if used as directed: 450 °C
- Flammability
- The product is not flammable.
- Incompatible Materials
- Corrosive in contact with metals, Organic materials, Combustible material, Hydrazine, Reducing agents
- Chemical Stability
- Stable under recommended storage conditions.
International Transportation
- Sub Class 1
- 5.1
- Packing Group
- II
- Harmonized System Code
- 2841509100
- Chemical Class
- 6.1
- UN Number
- 3086
General Information
- CAS Number
- 7789-12-0
- Synonyms
- Sodium bichromate
- Linear Formula
- Na2Cr2O7 · 2H2O
Physical Properties
- pH
- 3.5 (20 °C)
- Odor
- Odorless
- Color
- Orange
- Physical Form
- Crystalline powder
- Density
- 2.52 g/cm3 (20 °C)
- Boiling Point/Range
- Decomposes on heating.
- Melting Point/Range
- 320 °C
- Vapor Pressure
- No data available hectopascal
Safety Information
- Thermal Decomposition
- No decomposition if used as directed: 450 °C
- Flammability
- The product is not flammable.
- Incompatible Materials
- Corrosive in contact with metals, Organic materials, Combustible material, Hydrazine, Reducing agents
- Chemical Stability
- Stable under recommended storage conditions.
International Transportation
- Sub Class 1
- 5.1
- Packing Group
- II
- Harmonized System Code
- 2841509100
- Chemical Class
- 6.1
- UN Number
- 3086
- CAS Number : 7789-12-0
- Synonyms : Sodium bichromate
- Linear Formula : Na2Cr2O7 · 2H2O
- pH : 3.5 (20 °C)
- Odor : Odorless
- Color : Orange
- Physical Form : Crystalline powder
- Density : 2.52 g/cm3 (20 °C)
- Boiling Point/Range : Decomposes on heating.
- Melting Point/Range : 320 °C
- Vapor Pressure : No data available hectopascal
- Thermal Decomposition : No decomposition if used as directed: 450 °C
- Flammability : The product is not flammable.
- Incompatible Materials : Corrosive in contact with metals, Organic materials, Combustible material, Hydrazine, Reducing agents
- Chemical Stability : Stable under recommended storage conditions.
- Sub Class 1 : 5.1
- Packing Group : II
- Harmonized System Code : 2841509100
- Chemical Class : 6.1
- UN Number : 3086
Property
Value
assay
99.5 - 100.5 %
aluminium (Al)
Max. 0.002 %
calcium (Ca)
Max. 0.002 %
copper (Cu)
Max. 0.001 %
iron (Fe)
Max. 0.002 %
potassium (K)
Max. 0.01 %
magnesium (Mg)
Max. 0.005 %
lead (Pb)
Max. 0.002 %
chloride (Cl)
Max. 0.001 %
sulfate (SO4)
Max. 0.005 %
water insoluble matter
Max. 0.005 %
