8.2-8.4 °C (lit.)

Boiling point

100-101 °C (lit.)

density

1.22 g/mL at 25 °C (lit.)

vapor density

1.03 (vs air)

vapor pressure

52 mm Hg ( 37 °C)

refractive index

n20/D1.377

FEMA

2487 | FORMIC ACID

Fp

133 °F

storage temp.

2-8°C

solubility

H2O: soluble1g/10 mL, clear, colorless

pka

3.75(at 20℃)

form

Liquid

Specific Gravity

1.216 (20℃/20℃)

color

APHA: ≤15

PH

3.47(1 mM solution);2.91(10 mM solution);2.38(100 mM solution);

Odor

at 0.10 % in water. pungent vinegar formyl

Odor Type

acetic

explosive limit

12-38%(V)

Water Solubility

MISCIBLE

Sensitive

Hygroscopic

λmax

λ: 260 nm Amax: 0.03λ: 280 nm Amax: 0.01

Merck

14,4241

JECFA Number

79

BRN

1209246

Henry's Law Constant

At 25 °C: 95.2, 75.1, 39.3, 10.7, and 3.17 at pH values of 1.35, 3.09, 4.05, 4.99, and 6.21, respectively (Hakuta et al., 1977)

Dielectric constant

58.0（16℃）

Exposure limits

TLV-TWA 5 ppm (～9 mg/m3) (ACGIH, MSHA, OSHA, and NIOSH); IDLH 100 ppm (180 mg/m3) (NIOSH).

Stability:

Stable. Substances to be avoided include strong bases, strong oxidizing agents and powdered metals, furfuryl alcohol. Combustible. Hygroscopic. Pressure may build up in tightly closed bottles, so bottles should be opened carefully and vented periodically.

InChIKey

BDAGIHXWWSANSR-UHFFFAOYSA-N

LogP

-0.540

CAS DataBase Reference

64-18-6(CAS DataBase Reference)

NIST Chemistry Reference

Formic acid(64-18-6)

EPA Substance Registry System

Formic acid (64-18-6)