Solid phase
Official name
amorphous Formic acid ice
Secondary names
amorphous HCOOH ice
Type
Family
molecular solid
Class
hydrogen bonded molecular solid
Compound type
organic molecular solid
Chemical composition
Formula
$HCOOH$
Chemical formula
HCOOH
Elemental formula
H2 C O2
Isotope mixture type
terrestrial abundance
2.0
  Formula Name Family Number min-max Mole fraction Isotope mole fraction State Relevance
$HCOOH$ Formic acid molecule 1 1.0 1 pure main
Chemical functions
  Function Number
$R-C(=O)-OH$ 1
Chemical bonds
  Bond Number
$-O \dots H-$ 1
$-O-H$ 1
$>C=O$ 1
$\eqslantgtr C-H$ 1
$\eqslantgtr C-O-$ 1
Class
molecular solids with hydrogen bonded molecules (03)
Type
homomolecular H-bonded solids (03.01)
Phase name
amorphous HCOOH
Phase type
amorphous
Crystal system
amorphous
Molar mass
46.0254 $g/mol$
State NTP
liquid
Phase transitions
Phase transition type Other phases Temperature - Pressure
solid-solid to phase beta 1 (irreversible) above ~??K
Refringence type
isotropic
Pure color
colorless
Diaphaneity
transparent
Luster
vitreous
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