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Formic acid (seestematically cried methanoic acid) is the simplest carboxylic acid.

Formic acid
Skeletal structur o formic acid
3D model o formic acid
Formic acid 85 percent.jpg
Names
IUPAC name
Formic acid[1]
Seestematic IUPAC name
Methanoic Acid
Ither names
Aminic acid; Formylic acid; Hydrogen carboxylic acid; Hydroxymethanone; Hydroxy(oxo)methane; Metacarbonoic acid; Oxocarbinic acid; Oxomethanol
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.000.527
EC Nummer 200-579-1
E nummer E236 (preservatives)
KEGG
RTECS nummer LQ4900000
UNII
Properties
CH2O2
Molar mass 46.03 g·mol−1
Appearance colourless fumin liquid
Odour pungent, penetrating
Density 1.220 g/mL
Meltin pynt 8.4 °C (47.1 °F; 281.5 K)
Bylin pynt 100.8 °C (213.4 °F; 373.9 K)
miscible
Solubility miscible wi ether, acetone, ethyl acetate, glycerol, methanol, ethanol
pairtially soluble in benzene, toluene, xylenes
log P −0.54
Acidity (pKa) 3.77 [2]
Refractive index (nD) 1.3714 (20 °C)
Viscosity 1.57 cP at 268 °C
Hazards
Main hazards Corrosive; irritant;
sensitizer.
R-phrases R10 R35
S-phrases (S1/2) S23 S26 S45
NFPA 704
Flammability code 2: Must be moderately heatit or exposed tae relatively heich ambient temperature before igneetion can occur. Flash pynt atween 38 an 93 °C (100 an 200 °F). E.g., diesel fuelHealth code 3: Short exposur could cause serious temporary or residual injury. E.g., chlorine gasReactivity code 1: Normally stable, but can acome unstable at elevatit temperaturs an pressurs. E.g., calciumSpecial hazards (white): no codeNFPA 704 four-colored diamond
2
3
1
Flash pynt 69 °C (156 °F; 342 K)
Explosive leemits 14–34%
Lethal dose or concentration (LD, LC):
700 mg/kg (rat, oral)
Relatit compoonds
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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Infobox references

ReferencesEedit

  1. PubChem 284
  2. Brown, H. C. et al., in Braude, E. A. and Nachod, F. C., Determination of Organic Structures by Physical Methods, Academic Press, New York, 1955.