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Potassium Dichromate
- Origin
- : China
- CAS Number
- : 7778-50-9
- HS Code
- : 2841.50.00
Basic Info
- IUPAC Name
- : dipotassium dichromate
- Molecular Formula
- : K2Cr2O7
- Molecular Weight (g/mol)
- : 294.1800
- Synonyms & Trade Names
- : Potassium dichromate; K2Cr2O7; Potassium bichromate; SVHC
- Purity / Assay (%)
- : 99.5% min
- Grade / Quality Level
- : Technical Grade
- Physical Form
- : Solid
- Concentration
- : Pure substance
- Appearance / Color
- : White to off-white solid
- Odor
- : Odorless
- Melting Point (°C)
- : 397.0000
- Density (g/cm³)
- : 2.6760
- Solubility in Water
- : Freely soluble
- Signal Word
- : Danger
- UN Number
- : 3086
- GHS Hazard Class
- : Oxidizer; Acute toxic; Carcinogen; Reproductive hazard; CMR
- H-Statements
- : H272|H301|H312|H317|H330|H334|H340|H350|H361f|H372|H410
- P-Statements
- : P201|P210|P220|P260|P271|P273|P280|P301+P310
- REACH Status
- : Registered (SVHC)
- Drug Precursor Status
- : Non-precursor
- Storage Class (GHS)
- : 5.1
- Storage Conditions
- : Cool, dry; strong oxidizer; SVHC
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Brief Overview
Potassium dichromate, also called potassium dichromate (VI), is an orange-colored crystalline toxic inorganic chemical. It occurs naturally in mineral form as lopezite, which is a very rare mineral.
Manufacturing Process
Potassium Dichromate is industrially manufactured by the reaction of potassium chloride solution (KCl) with sodium dichromate (Na2Cr2O7) as shown:
Na2Cr2O7 + 2 KCl → K2Cr2O7 + 2 NaCl
Potassium Dichromate can also be obtained from its related compound, potassium chromate (K2CrO4), which reacts with acids to give the dichromate salt.