Magnesium Hydroxide

Mg(OH)2

Magnesium Hydroxide - Mg(OH)2Magnesium Hydroxide - Mg(OH)2Magnesium Hydroxide - Mg(OH)2
Chemical name
Magnesium Hydroxide
Mineral name
Brucite
Chemical formula
Mg(OH)2
Melting point [°C]
350
Crystal system
trigonal
Crystal Class
Hexagonal scalenohedral (3m) H-M symbol: (3 2/m)
Space Group
P3m1 No. 164
Unit cell
a [Å]:0.312nm
b [Å]:
c [Å]:0.473nm
Molecular weight [g/mol]
58.83
Mohs hardness
2.5 to 3
Density [g/cm3]
2.3446
Cleavage
Perfect on {0001}
Fracture / Tenacity
Irregular, sectile
Color
White, pale green, blue, gray; honey-yellow to brownish red
Streak
White
Transparency
Transparent
Luster
Vitreous to pearly
Optical character
Uniaxial (+)
Refractive Index
nω = 1.56–1.59 nε = 1.58–1.60
Birefringence δ
0.02
Other
Pyroelectric
Solubility in water
0.00064 g/100 mL (25 °C)