CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Sodium dichromate appears as a red or red-orange crystalline solid. May be strongly irritating to skin, eyes and mucous membranes. Used as a corrosion inhibitor, and in the manufacture of other chemicals. |
|---|---|
| Color/Form | Light-brown to orange-red plates which are strongly hygroscopic |
| Odor | Odorless |
| Boiling Point | 400 °C (decomposes) |
| Melting Point | 675 °F (USCG, 1999) |
| Solubility | Solubility in water: 77.09 wt% at 40 °C; 82.04 wt% at 60 °C; 88.39 wt% at 80 °C |
| Density | 2.35 at 77 °F (USCG, 1999) - Denser than water; will sink |
| Stability/Shelf Life | Stable under recommended storage conditions. /Sodium Dichromate Dihydrate/ |
| Autoignition Temperature | Not flammable (USCG, 1999) |
| Decomposition | Decomposition at about 400 °C |
| Corrosivity | Corrosive because of oxidizing potency. /Chromate salts/ |
| pH | Solutions are acidic, pH of 1% soln 4.0 and pH of 10% soln 3.5. |
| Other Experimental Properties | Becomes anhydrous on prolonged heating at about 100 °C |
| Chemical Classes | Metals -> Chromium Compounds, Inorganic |
COMPUTED DESCRIPTORS
| Molecular Weight | 261.97 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 7 |
| Rotatable Bond Count | 0 |
| Exact Mass | 261.824950 g/mol |
| Monoisotopic Mass | 261.824950 g/mol |
| Topological Polar Surface Area | 124 Ų |
| Heavy Atom Count | 11 |
| Formal Charge | 0 |
| Complexity | 194 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 3 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Sodium dichromate appears as a red or red-orange crystalline solid. May be strongly irritating to skin, eyes and mucous membranes. Used as a corrosion inhibitor, and in the manufacture of other chemicals.