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Formic Acid

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Identification
Molecular formula
H2CO2
CAS number
64-18-6
IUPAC name
formic acid
State
State

At room temperature, formic acid is a liquid that is often used in its concentrated form and is known for its volatility. It is used in various industrial applications due to its acidic properties.

Melting point (Celsius)
8.40
Melting point (Kelvin)
281.50
Boiling point (Celsius)
100.80
Boiling point (Kelvin)
373.90
General information
Molecular weight
46.03g/mol
Molar mass
46.0250g/mol
Density
1.2200g/cm3
Appearence

Formic acid is a colorless liquid with a pungent, penetrating odor. It is often found in its concentrated form as a fuming liquid and is highly volatile. Formic acid is also miscible with water and most polar organic solvents.

Comment on solubility

Solubility of Formic Acid (H2CO2)

Formic acid, known for its presence in the venom of ants and various natural sources, exhibits remarkable solubility characteristics that make it a fascinating compound to study. Below are some key points regarding its solubility:

  • Highly Soluble in Water: Formic acid is extremely soluble in water, with a solubility that can reach over 1000 g/L at room temperature. This high solubility is attributed to its ability to form hydrogen bonds with water molecules.
  • Miscibility: It not only dissolves in water but is also completely miscible with many organic solvents, such as methanol and ethanol, which expands its utility in various chemical reactions and applications.
  • Temperature Dependence: The solubility of formic acid increases with an increase in temperature, showcasing the typical behavior of many acidic compounds.
  • Influence of pH: The acidity of formic acid (with a pKa of around 3.75) also affects its solubility, as it can dissociate into formate ions (HCOO-), further enhancing its solubility in aqueous solutions.

In summary, the solubility of formic acid is a defining feature, making it a vital compound in various industrial and biological contexts. Its significant solubility in water and organic solvents contributes to its versatility in chemical synthesis and biological processes.

Interesting facts

Interesting Facts About Formic Acid

Formic acid, scientifically known as methanoic acid, is a fascinating compound with a variety of applications and properties that make it significant in both industry and nature. As the simplest carboxylic acid, it has the molecular structure represented by the formula H2CO2, but there’s much more to this compound than its simple appearance.

Natural Occurrence

One of the most intriguing aspects of formic acid is its natural occurrence. It is found in:

  • Ant venom: The name "formic" is derived from the Latin word for ant, formica, as it was first isolated from these insects.
  • Stinging nettles: This plant also contains formic acid, contributing to the irritation felt upon contact.
  • Decomposing organic matter: It is produced naturally during the decomposition of various organic materials.

Industrial Uses

Formic acid holds a place of prominence in several industrial processes, making it an important chemical in the marketplace. Here are some of its key applications:

  • Leather production: Used in the tanning process, formic acid helps stabilize leather.
  • Textile industry: It serves as a mordant in dyeing processes, enhancing color adherence.
  • Food preservation: Its antibacterial properties make it a valuable ingredient in preserving certain food items.

Biological Significance

Formic acid contributes to the ecological balance as well. Notably:

  • It plays a role in the food chain, being utilized by various organisms.
  • It has shown potential in energy storage technologies, particularly in formic acid fuel cells.

To summarize, formic acid is not just a simple acid; it is a compound with rich biological significance, diverse industrial applications, and intriguing natural occurrences. Its role balances the natural world while simultaneously impacting technological advancements, highlighting how even simple compounds can have profound implications.

Synonyms
formic acid
Methanoic acid
64-18-6
Formylic acid
Aminic acid
Bilorin
Hydrogen carboxylic acid
Formisoton
Formira
Myrmicyl
Collo-bueglatt
Collo-didax
Acide formique
Add-F
Ameisensaeure
C1 acid
Formic acid (natural)
RCRA waste number U123
Mierenzuur
Acido formico
Formicum acidum
Kwas metaniowy
Kyselina mravenci
FEMA No. 2487
Mierenzuur [Dutch]
Ameisensaure
HCOOH
Sybest
Ameisensaeure [German]
Acide formique [French]
Acido formico [Italian]
Kwas metaniowy [Polish]
CCRIS 6039
EPA Pesticide Chemical Code 214900
Kyselina mravenci [Czech]
AI3-24237
Methanoic acid monomer
methoic acid
HCO2H
HSDB 1646
RCRA waste no. U123
EINECS 200-579-1
UNII-0YIW783RG1
UN1779
0YIW783RG1
CHEBI:30751
H-COOH
MFCD00003297
Wonderbond Hardener M 600L
DTXSID2024115
EC 200-579-1
aminate
formylate
methanoate
VARROMED COMPONENT FORMIC ACID
Formic acid [UN1779] [Corrosive]
Formic Acid, 85%
Formic Acid, 97+%
hydrogen carboxylate
FORMIC ACID (MART.)
FORMIC ACID [MART.]
FORMIC ACID (USP-RS)
FORMIC ACID [USP-RS]
FORMIC ACID (EP MONOGRAPH)
FORMIC ACID [EP MONOGRAPH]
MFCD00037363
FORMIC ACID (EMA EPAR VETERINARY)
FORMIC ACID [EMA EPAR VETERINARY]
Formic acid Solution in Water, 100ug/mL
Unsaturated Fatty Acid
carboxy
Amasil
Acidum formicum
forrnic acid
Provita Konquest
Pleo Form
fatty acid 12:2
fatty acid 17:3
Formic acid, natural
fatty acid(12:2)
fatty acid(17:3)
ProvitaHoofsure Endurance
Formic Acid, ACS Grade
FORMIC ACID [MI]
bmse000203
FORMIC ACID [FCC]
Formic acid 98-100%
Formic acid, 95-97%
FORMIC ACID [FHFI]
FORMIC ACID [HSDB]
Formic acid, LC/MS Grade
FORMIC ACID [VANDF]
FEMA No 2487
Formic acid, p.a., 85%
FORMIC ACID [WHO-DD]
Provita Hoofsure Endurance XL
Formic acid, AR, >=90%
Formic acid, AR, >=98%
Formic acid, LR, >=85%
Formic acid, LR, >=98%
FORMICUM ACIDUM [HPUS]
CHEMBL116736
DTXCID904115
Formic acid, purum, >=85%
CHEBI:36036
DTXSID30180329
CHEBI:191874
CHEBI:232780
CHEBI:232781
CHEBI:232866
CHEBI:232867
Provita Hoofsure Endurance Express
BCP23013
Formic Acid Ampoules (LCMS Grade)
Formic acid, >=95%, FCC, FG
Formic acid, technical grade, 85%
CS0117
Formic acid, ACS reagent, >=96%
STL264243
Formic acid, reagent grade, >=95%
AKOS000269044
Formic acid, ACS reagent, 88-91%
CCG-266004
DB01942
FA 12:2
MSK000744-100W
UN 1779
Formic acid, ACS reagent, >=96.0%
USEPA/OPP Pesticide Code: 214900
FORMIC ACID COMPONENT OF VARROMED
Formic Acid, water less than 1% by KF
NCGC00248718-01
BP-21436
E236
FA(12:2)
FA(17:3)
SY078334
1ST000744-100W
DB-029851
Formic acid-D2, 95 wt% solution in D2O
C20:3
F0513
F0654
Formic acid 1000 microg/mL in Acetonitrile
Formic acid, JIS special grade, >=98.0%
Formic acid, Vetec(TM) reagent grade, 95%
NS00008563
NS00120341
C00058
C22969
Formic acid, SAJ first grade, 88.0-89.5%
Formic-D acid ( in H2O) >98.0 Atom % D
InChI=1/CH2O2/c2-1-3/h1H,(H,2,3
A834666
Q161233
Formic acid, p.a., ACS reagent, 98.0-100.0%
Q27110013
F1908-0082
Z104475998
Formate standard for IC, 1.000 g/L in H2O, analytical standard
Formic acid, puriss. p.a., ACS reagent, reag. Ph. Eur., >=98%
Formic acid, United States Pharmacopeia (USP) Reference Standard
Formic acid, puriss., meets analytical specifications of DAC, FCC, 98.0-100%
200-579-1
82069-14-5