Solid phase
Official name
Molybdic acid
Secondary names
Molybdic(VI) acid; dihydroxy(dioxo)molybdenum; Diammonium dimolybdate; molybdenum trioxide monohydrate; H2MoO4
CAS number
7782-91-4
Family
covalent network solid
Class
sheet covalent network solid
Compound type
oxide
Formula
MoO3H2O
Chemical formula
MoO3•H2O
Elemental formula
Mo O4 H2
Isotope mixture type
terrestrial abundance
10.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
Mo Molybdenum element 1 0.2 1 constituent element main
O Oxygen element 3 0.6 1 constituent element main
H2O Water molecule 1 0.2 1 hydration main
Chemical functions
  Function Number
ROH 2
Chemical bonds
  Bond Number
≥∣MoO 5
>∣Mo=O 1
OH 2
Class
sheet covalent networks (10)
Type
one metal and one non-metal atoms sheet networks (10.04)
Phase type
crystalline
Crystal system
hexagonal
Molar mass
161.95 g/mol
Density
3.112 g/cm3
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid MoO3.H2O > 300°C (> 573 K)
Phase transitions comments
a 'monohydrate' (or Mo trioxide dihydrate Mo3.2H2O) exists
Refringence type
uniaxial
Pure color
colorless
Color
colorless, white