Sodium Chromate

Na₂CrO₄

IUPAC: Sodium chromate

CAS: 7775-11-3

Overview

Sodium chromate is a bright yellow salt and powerful oxidizer used in corrosion inhibition, leather tanning, and as a chromium source in chemical synthesis.

Composition

Element Symbol Atoms Atomic Mass
Oxygen O 4 15.9990
Sodium Na 2 22.9900
Chromium Cr 1 51.9960

Elemental Composition

O
Oxygen ×4
39.5%
Na
Sodium ×2
28.4%
Cr
Chromium ×1
32.1%

Uses

  • • Corrosion inhibitor
  • • Leather tanning
  • • Pigment production
  • • Analytical chemistry

Fun Facts

  • ✦ Hexavalent chromium compounds were the subject of the Erin Brockovich case

Safety

  • ⚠ Carcinogen (Cr(VI))
  • ⚠ Toxic
  • ⚠ Environmental hazard

Structure

SMILES

[O-][Cr](=O)(=O)[O-].[Na+].[Na+]

Properties

Type
salt
State
solid
Molar Mass
161.97 g/mol
Density
2.7230 g/cm³
Melting Point
792.0 °C
Solubility
873 g/L at 30°C

Molecular Descriptors

Exact Mass
161.8997
TPSA
80.3 Ų
H-Bond Donors
0
H-Bond Acceptors
4
Rotatable Bonds
0
Heavy Atoms
7
Complexity
62.0

Related Compounds

Ammonium Bicarbonate

NH₄HCO₃

Ammonium Chloride

NH₄Cl

Ammonium Sulfate

(NH₄)₂SO₄

Barium Carbonate

BaCO₃

Barium Chloride

BaCl₂

Barium Sulfate

BaSO₄

Cadmium Sulfide

CdS

Calcium Acetate

Ca(C₂H₃O₂)₂

Calcium Carbonate

CaCO₃

Calcium Citrate

Ca₃(C₆H₅O₇)₂

Frequently Asked Questions

What is Sodium Chromate?
Sodium Chromate (Na₂CrO₄) is a salt compound with the IUPAC name Sodium chromate.
What is the molecular weight of Sodium Chromate?
Sodium Chromate has a molar mass of 161.97 g/mol.
What state is Sodium Chromate at room temperature?
Sodium Chromate is a solid at room temperature.
Is Sodium Chromate organic or inorganic?
Sodium Chromate is classified as an inorganic compound.
What elements make up Sodium Chromate?
Sodium Chromate (Na₂CrO₄) is composed of Oxygen (O), Sodium (Na), Chromium (Cr).