Melting point :-16--13 °C (lit.)
Boiling point :99-101 °C/18 mmHg (lit.)
Density :0.92 g/mL at 25 °C (lit.)
vapor pressure :0.08 mm Hg ( 20 °C)
refractive index :n20/D 1.413(lit.)
FEMA :2429 | 2-ETHYLBUTYRIC ACID
Flash point :190 °F
storage temp. :Store below +30°C.
solubility :18g/l
pka :pKa: 4.751(25°C)
form :clear liquid
color :Colorless to Almost colorless
Odor :at 10.00 % in propylene glycol. acidic fruity whiskey dry berry
PH :3 (18g/l, H2O, 20℃)
explosive limit :1.4%(V)
Odor Type :acidic
Water Solubility :18 g/L (20 ºC)
JECFA Number :257
Merck :14,3110
BRN :1098634
LogP :1.68
CAS DataBase Reference :88-09-5(CAS DataBase Reference)
NIST Chemistry Reference :Butanoic acid, 2-ethyl-(88-09-5)
EPA Substance Registry System :2-Ethylbutyric acid (88-09-5)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
Precautionary statements:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P280 Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P314 Get medical advice/attention if you feel unwell.