CHROMIUM(VI) OXIDE - (1333-82-0)

Introduction

Name: chromium(VI) oxide
* IUPAC
CAS Number: 1333-82-0
Chemical Formula: CrO3
Molar Mass: 99.9943 g
Mass Percent: Cr 51.999 %; O 48.000 % 

Classification

• inorganic

Uses/Function

• "Chromium plating; copper stripping; aluminum anodizing; corrosion inhibitor; photography; purifying oil and acetylene; hardening microscopic prep[aratio]ns; oxidizing agent in organic chemistry. Therapeutic (Veterinary): Has been used in solution as a topical antiseptic and astringent." 1

Bonding

Bonding: ionic
Ionic Character: 53.94 %

Thermochemistry

ΔHf° (g): -70.00 kcal/mol 2 = -292.88 kJ/mol
S° (g): 63.59 cal/(mol•K) 3 = 266.06 J/(mol•K)
ΔGf° (g): -65.36 kcal/mol 4 = -273.47 kJ/mol

For More Information

Sources

(1) - The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 13th ed.; Budavari, S.; O'Neil, M.J.; Smith, A.; Heckelman, P. E.; Kinneary, J. F., Eds.; Merck & Co.: Whitehouse Station, NJ, 2001; entry 2256.
(2) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(3) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(4) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.