염화코발트(II)

CoCl₂

IUPAC: Cobalt(II) chloride

CAS: 7646-79-9

개요

Cobalt(II) chloride changes from blue (anhydrous) to pink (hydrated) with moisture, making it a popular humidity indicator. It is used in silica gel desiccants.

구성

원소 기호 원자 원자 질량
염소 Cl 2 35.4500
코발트 Co 1 58.9330

원소 구성

Cl
염소 ×2
54.6%
Co
코발트 ×1
45.4%

용도

  • • Humidity indicator
  • • Invisible ink
  • • Electroplating
  • • Catalyst

흥미로운 사실

  • ✦ The blue-to-pink color change with humidity is used in weather-predicting novelty items

안전

  • ⚠ Carcinogen
  • ⚠ Toxic

구조

SMILES

[Cl-].[Cl-].[Co+2]

성질

유형
salt
상태
solid
몰 질량
129.84 g/mol
밀도
3.3560 g/cm³
녹는점
735.0 °C
끓는점
1049.0 °C
용해도
529 g/L at 20°C

분자 기술자

정확 질량
128.8709
TPSA
0.0 Ų
수소결합 주개
0
수소결합 받개
2
회전 가능 결합
0
중원자
3
복잡도
0.0

관련 화합물

염화은

AgCl

질산은

AgNO₃

염화바륨

BaCl₂

염화칼륨

KCl

인산칼슘

Ca₃(PO₄)₂

질산칼륨

KNO₃

탄산리튬

Li₂CO₃

탄산바륨

BaCO₃

탄산칼륨

K₂CO₃

탄산칼슘

CaCO₃

Frequently Asked Questions

What is 염화코발트(II)?
염화코발트(II) (CoCl₂) is a salt compound with the IUPAC name Cobalt(II) chloride.
What is the molecular weight of 염화코발트(II)?
염화코발트(II) has a molar mass of 129.84 g/mol.
What state is 염화코발트(II) at room temperature?
염화코발트(II) is a solid at room temperature.
Is 염화코발트(II) organic or inorganic?
염화코발트(II) is classified as an inorganic compound.
What elements make up 염화코발트(II)?
염화코발트(II) (CoCl₂) is composed of 염소 (Cl), 코발트 (Co).