Melting point :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/D 1.377
FEMA :2487 | FORMIC ACID
Flash point :133 °F
storage temp. :2-8°C
solubility :H2O: soluble1g/10 mL, clear, colorless
form :Liquid
pka :3.75(at 20℃)
color :APHA: ≤15
Specific Gravity :1.216 (20℃/20℃)
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: 0.03
λ: 280 nm Amax: 0.01 JECFA Number :79
Merck :14,4241
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)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.