Melting point :-35°C
Boiling point :105°C
Density :1.15 g/mL at 25 °C(lit.)
vapor density :1.27 (vs air)
vapor pressure :25 mm Hg ( 20 °C)
Flash point :112°C
storage temp. :Store at +5°C to +30°C.
solubility :very soluble in H2O, ethanol; soluble in ethyl ether
pka :3.17(at 25℃)
form :Liquid, Double Sub-Boiling Quartz Distillation
Specific Gravity :1.15
PH Range :1
PH :3.27(1 mM solution);2.65(10 mM solution);2.12(100 mM solution)
Odor :Acrid, irritating odor
Water Solubility :soluble
Sensitive :Hygroscopic
Merck :14,4790
Exposure limits :Ceiling limit 3 ppm (～2.5 mg/m³) as F (ACGIH); TWA 3 ppm (MSHA and OSHA).
Dielectric constant :17.0（-73℃）
Stability :Stable. Hygroscopic. Incompatible with glass, alkali metals, light metals, alkaline earth metals
LogP :0.1 at 20℃
CAS DataBase Reference :7664-39-3(CAS DataBase Reference)
NIST Chemistry Reference :Hydrogen fluoride(7664-39-3)
EPA Substance Registry System :Hydrofluoric acid (7664-39-3)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes 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
Precautionary statements:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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.