CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Dry Powder; Dry Powder, Other Solid; Dry Powder, Pellets or Large Crystals; Other Solid; Pellets or Large Crystals; Pellets or Large Crystals, Other Solid |
|---|---|
| Color/Form | Light to dark green, fine, hexagonal crystals |
| Boiling Point | 4000 °C |
| Melting Point | 2435 °C |
| Solubility | In water, 3.13 ug/L at 20 °C, pH 6; 2.96 ug/L at 20 °C, pH 8 |
| Density | 5.22 at 25 °C |
| Stability/Shelf Life | Stable under recommended storage conditions. |
| pH | Trivalent chromium compounds are amphoteric |
| Refractive Index | Index of refraction: 2.551 |
| Other Experimental Properties | Turns brown on heating, but reverts to green color on cooling. Crystalline chromic oxide is extremely hard; will scratch quartz, topaz, zircon. |
| Chemical Classes | Metals -> Chromium Compounds, Inorganic |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H317:Sensitisation, Skin H332:Acute toxicity,inhalation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P321:Specific treatment (see … on this label). P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. |
COMPUTED DESCRIPTORS
| Molecular Weight | 151.990 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 0 |
| Exact Mass | 151.865753 g/mol |
| Monoisotopic Mass | 151.865753 g/mol |
| Topological Polar Surface Area | 43.4 Ų |
| Heavy Atom Count | 5 |
| Formal Charge | 0 |
| Complexity | 34.2 |
| 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 | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Dichromium trioxide is a chromium oxide.