Sodium Dichromate

Na₂Cr₂O₇

IUPAC: Sodium dichromate

CAS: 10588-01-9

概述

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.

组成

元素 符号 原子 原子质量
Oxygen O 7 15.9990
Sodium Na 2 22.9900
Chromium Cr 2 51.9960

元素组成

O
Oxygen ×7
42.8%
Na
Sodium ×2
17.6%
Cr
Chromium ×2
39.7%

用途

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

趣味知识

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

安全性

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

Structure

SMILES

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

属性

类型
salt
状态
solid
摩尔质量
261.97 g/mol
密度
2.5200 g/cm³
熔点
356.7 °C
沸点
400.0 °C
溶解度
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

别名

Sodium bichromate

相关化合物

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).