다이크로뮴산칼륨

K₂Cr₂O₇

IUPAC: Potassium dichromate

CAS: 7778-50-9

개요

Potassium dichromate is a bright orange crystalline oxidizing agent used in analytical chemistry and industrial processes.

구성

원소 기호 원자 원자 질량
산소 O 7 15.9990
칼륨 K 2 39.0980
크로뮴 Cr 2 51.9960

원소 구성

O
38.1%
K
26.6%

용도

  • Chrome plating
  • Leather tanning
  • Analytical chemistry (COD test)
  • Photography

흥미로운 사실

  • K₂Cr₂O₇ was once used in breathalyzer tests — it changes from orange to green in the presence of alcohol

안전

  • ⚠ Carcinogen (Cr⁶⁺)
  • ⚠ Highly toxic
  • ⚠ Strong oxidizer
  • ⚠ Environmental pollutant

구조

SMILES

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

성질

유형
industrial
상태
solid
몰 질량
294.19 g/mol
밀도
2.6800 g/cm³
녹는점
398.0 °C
끓는점
500.0 °C
용해도
125 g/L at 20°C

분자 기술자

정확 질량
293.7728
TPSA
124.0 Ų
수소결합 주개
0
수소결합 받개
7
회전 가능 결합
0
중원자
11
복잡도
194.0

Frequently Asked Questions

What is 다이크로뮴산칼륨?
다이크로뮴산칼륨 (K₂Cr₂O₇) is a industrial compound with the IUPAC name Potassium dichromate.
What is the molecular weight of 다이크로뮴산칼륨?
다이크로뮴산칼륨 has a molar mass of 294.19 g/mol.
What state is 다이크로뮴산칼륨 at room temperature?
다이크로뮴산칼륨 is a solid at room temperature.
Is 다이크로뮴산칼륨 organic or inorganic?
다이크로뮴산칼륨 is classified as an inorganic compound.
What elements make up 다이크로뮴산칼륨?
다이크로뮴산칼륨 (K₂Cr₂O₇) is composed of 산소 (O), 칼륨 (K), 크로뮴 (Cr).