12135-13-6

Basic information

• Product Name: mercury dihydrate
• CAS NO: 12135-13-6
• Molecular Formula: H₂HgO₂
• Molecular Weight: 236.6206
• Mol File: 12135-13-6.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 100°C at 760 mmHg
• Vapor Pressure: 24.5mmHg at 25°C
• CAS DataBase Reference: mercury dihydrate(CAS DataBase Reference)
• NIST Chemistry Reference: mercury dihydrate(12135-13-6)
• EPA Substance Registry System: mercury dihydrate(12135-13-6)

Safety Data

• Hazardous Substances Data: 12135-13-6(Hazardous Substances Data)

Upstream product

• 1333-74-0 hydrogen 
• 80937-33-3 oxygen 
• 17410-58-1 oxygen-¹⁸O,¹⁶O 

Relevant articles and documents

Infrared spectrum of Hg(OH)2 in solid neon and argon

Mercury(II) hydroxide molecules have been prepared upon mercury arc lamp irradiation of Hg, H2, and O2 mixtures in solid neon and argon. The strongest three infrared absorptions are identified through isotopic substitution (D2, HD, 18O2,16O 18O) and comparison to frequencies from DFT calculations. The isolated Hg(OH)2 molecule is stable and has a linear O-Hg-O linkage in a C2 structure with an 86° dihedral angle. However, in aqueous solution Hg2+ and 2OH- may form an Hg(OH)2 intermediate, which eliminates water and precipitates solid HgO: The solid Hg(OH)2 compound is not known.