Potassium dichromate
IUPAC: dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
| Formula / Notation | K2Cr2O7 |
|---|---|
| CAS Number | 7778-50-9 |
| Molecular Weight | 294.18 |
| Melting Point | 748 °F (NTP, 1992) |
| Boiling Point | Decomposes at 932 °F (NTP, 1992) |
| Density | 2.676 at 77 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | 10 to 50 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Potassium bichromate appears as orange red crystals. Denser than water and soluble in water. No distinctive odor. May severely irritate the eyes and respiratory tract. Avoid contact with organic ma... |
| Also Known As | dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium; 7778-50-9; Potassium bichromate; Iopezite; Kaliumdichromat; Bichromate of potash; Potassium dichromate(VI); Dipotassium bichromate; Dipotassium dichromate; Dichromic acid dipotassium salt |
| Category | Salts |
What is Potassium dichromate?
Potassium dichromate is a potassium salt that is the dipotassium salt of dichromic acid. It has a role as a sensitiser, an allergen and an oxidising agent. It contains a dichromate(2-).
Formula & Notation
IUPAC Name: dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
Other Names / Synonyms: dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium; 7778-50-9; Potassium bichromate; Iopezite; Kaliumdichromat; Bichromate of potash; Potassium dichromate(VI); Dipotassium bichromate; Dipotassium dichromate; Dichromic acid dipotassium salt
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 748 °F (NTP, 1992) |
| Boiling Point | Decomposes at 932 °F (NTP, 1992) |
| Density | 2.676 at 77 °F (USCG, 1999) - Denser than water; will sink |
| Molecular Weight | 294.18 |
| Solubility | 10 to 50 mg/mL at 68 °F (NTP, 1992) |
| Appearance | Potassium bichromate appears as orange red crystals. Denser than water and soluble in water. No distinctive odor. May severely irritate the eyes and respiratory tract. Avoid contact with organic ma... |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Potassium dichromate is a potassium salt that is the dipotassium salt of dichromic acid. It has a role as a sensitiser, an allergen and an oxidising agent. It contains a dichromate(2-).
Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.
Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.
The formula or notation for Potassium dichromate is: K2Cr2O7