Sodium Dichromate

Na₂Cr₂O₇

IUPAC: Sodium dichromate

CAS: 10588-01-9

Tổng quan

Sodium dichromate is an important industrial chemical used primarily in the production of chromium compounds and in metal finishing. It is a powerful oxidizer containing hexavalent chromium, which makes it effective but also highly toxic and carcinogenic.

Thành phần

Nguyên tố Ký hiệu Nguyên tử Khối lượng nguyên tử
Oxygen O 7 15,9990
Sodium Na 2 22,9900
Chromium Cr 2 51,9960

Thành phần nguyên tố

O
Oxygen ×7
42,8%
Na
Sodium ×2
17,6%
Cr
Chromium ×2
39,7%

Công dụng

  • • Chrome plating
  • • Wood preservation (CCA treatment)
  • • Corrosion inhibitor
  • • Pigment production

Sự thật thú vị

  • ✦ CCA (chromated copper arsenate) treated wood has been phased out for residential use but is still used for industrial purposes

An toàn

  • ⚠ Known carcinogen (hexavalent chromium)
  • ⚠ Highly toxic
  • ⚠ Strong oxidizer
  • ⚠ Environmental contaminant

Structure

SMILES

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

Tính chất

Loại
salt
Trạng thái
solid
Khối lượng mol
261,97 g/mol
Mật độ
2,5200 g/cm³
Điểm nóng chảy
356,7 °C
Điểm sôi
400,0 °C
Độ hòa tan
730 g/L at 20°C

Molecular Descriptors

Exact Mass
261,8250
TPSA
124,0 Ų
H-Bond Donors
0
H-Bond Acceptors
7
Rotatable Bonds
0
Heavy Atoms
11
Complexity
194,0

Còn được gọi là

Sodium bichromate

Hợp chất liên quan

Diammonium Phosphate

(NH₄)₂HPO₄

Ammonium Chloride

NH₄Cl

Barium Chloride

BaCl₂

Cadmium Sulfide

CdS

Calcium Sulfate

CaSO₄

Cerium(III) Chloride

CeCl₃

Copper(II) Sulfide

CuS

Ammonium Sulfate

(NH₄)₂SO₄

Ammonium Bicarbonate

NH₄HCO₃

Calcium Propionate

Ca(C₂H₅COO)₂

Frequently Asked Questions

What is Sodium Dichromate?
Sodium Dichromate (Na₂Cr₂O₇) is a salt compound with the IUPAC name Sodium dichromate.
What is the molecular weight of Sodium Dichromate?
Sodium Dichromate has a molar mass of 261.968 g/mol.
What state is Sodium Dichromate at room temperature?
Sodium Dichromate is a solid at room temperature.
Is Sodium Dichromate organic or inorganic?
Sodium Dichromate is classified as an inorganic compound.
What elements make up Sodium Dichromate?
Sodium Dichromate (Na₂Cr₂O₇) is composed of Oxygen (O), Sodium (Na), Chromium (Cr).