Boiling point :112-114 °C/14 mmHg (lit.)
Density :1.811 g/mL at 25 °C (lit.)
vapor pressure :7Pa at 20℃
refractive index :n20/D 1.3230(lit.)
Flash point :>230 °F
storage temp. :2-8°C
solubility :Soluble in water
form :clear liquid
pka :-3.57±0.50(Predicted)
color :Colorless to Light yellow to Light orange
Water Solubility :1000g/L at 20℃
Henry's Law Constant :2.0×10⁰ mol/(m³Pa) at 25℃, Plassmann et al. (2011)
InChI :InChI=1S/C4HF9O3S/c5-1(6,3(9,10)11)2(7,8)4(12,13)17(14,15)16/h(H,14,15,16)
InChIKey :JGTNAGYHADQMCM-UHFFFAOYSA-N
SMILES :C(F)(F)(S(O)(=O)=O)C(F)(F)C(F)(F)C(F)(F)F
LogP :-0.34 at 23℃
CAS DataBase Reference :375-73-5(CAS DataBase Reference)
EPA Substance Registry System :Perfluorobutanesulfonic acid (375-73-5)

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
Precautionary statements:	P270 Do not eat, drink or smoke when using this product. 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. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. 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.