Solid phase
Official name
Ammonium formate
Secondary names
Formic acid ammonium salt; ammonium salt of formic acid; ammoniumformate; ammonium formiate; azanium formate; HCOONH4; HCOO- NH4+; HCO2NH4; CH5NO2; NH4HCOO; NH4+ HCOO-; NH4HCO2; NH4+ HCO2-
CAS number
540-69-2
Type
Family
ionic solid
Class
alkali salt
Compound type
organic salt
Chemical composition
Formula
$NH_4^+ \cdot HCOO^-$
Chemical formula
NH4HCOO
Elemental formula
(N+) H5 C O (O-)
Isotope mixture type
terrestrial abundance
4.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$NH_4^+$ Ammonium ion molecule 1 0.5 1 constituent cation main
$HCOO^-$ Formate ion molecule 1 0.5 1 constituent anion main
Chemical functions
  Function Number
$H_4 >\mid N^+$ 1
$R-C(=O)-O^-$ 1
Chemical bonds
  Bond Number
$>\mid N^+ \cdot O^{-}-$ 1
$\geq N^+-H$ 4
$\eqslantgtr C-H$ 1
$>C=O$ 1
$\eqslantgtr C-O^-$ 1
Class
normal salts (07)
Type
simple normal salts (07.01)
Phase type
crystalline
Crystal system
monoclinic
Molar mass
63.056 $g/mol$
Density
1.26 $g/cm^3$
State NTP
solid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-liquid liquid 116 °C (389 K)
Refringence type
biaxial
Pure color
colorless
Diaphaneity
transparent
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