MilliporeSigma
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8.22254

Sigma-Aldrich

Formic acid

for synthesis

Synonym(s):
Methanoic acid, Formylic acid
Linear Formula:
HCOOH
CAS Number:
Molecular Weight:
46.03
Beilstein:
1209246
MDL number:
EC Index Number:
200-579-1

vapor density

1.6 (vs air)

Quality Level

vapor pressure

44.8 mmHg ( 20 °C)

assay

≥99% (acidimetric)

form

liquid

autoignition temp.

1004 °F

expl. lim.

12-38 % (v/v)
57 %

reaction suitability

reagent type: reductant

technique(s)

electrophoresis: suitable

refractive index

n20/D 1.370 (lit.)

pH

2.2 (20 °C, 10 g/L in H2O)

bp

100-101 °C (lit.)
101 °C/1013 hPa

mp

8.2-8.4 °C (lit.)

transition temp

flash point 49.5 °C

density

1.22 g/mL at 25 °C (lit.)

storage temp.

2-30°C

SMILES string

OC=O

InChI

1S/CH2O2/c2-1-3/h1H,(H,2,3)

InChI key

BDAGIHXWWSANSR-UHFFFAOYSA-N

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Analysis Note

Assay (acidimetric): ≥ 99.0 %
Density (d 20 °C/ 4 °C): 1.218 - 1.221
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1A

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

121.1 °F - closed cup

Flash Point(C)

49.5 °C - closed cup

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