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
color :APHA: ≤10
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
Thermal Conductivity :2.33 W/(m·K)
Sensitive :Hygroscopic
Merck :14,4790
Henry's Law Constant :1.3×10² mol/(m³Pa) at 25℃, Fredenhagen and Wellmann (1932)
Exposure limits :ACGIH TLV-TWA:0.5 ppm,as F;TLV-CEILING:2 ppm,as F
OSHA PEL-TWA:3 ppm Dielectric constant :17.0（-73℃）
Stability :Stable. Hygroscopic. Incompatible with glass, alkali metals, light metals, alkaline earth metals
InChI :1S/FH/h1H
InChIKey :KRHYYFGTRYWZRS-UHFFFAOYSA-N
SMILES :[H+].[F-]
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 H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501 H310 Fatal in contact with skin Acute toxicity,dermal Category 1, 2 Danger P262, P264, P270, P280, P302+P350,P310, P322, P361, P363, P405, 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 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
Precautionary statements:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 Wear respiratory protection. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P302+P352 IF ON SKIN: wash with plenty of soap and water. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P310 Immediately call a POISON CENTER or doctor/physician. P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P405 Store locked up. P501 Dispose of contents/container to..…