Melting point :29-33 °C(lit.)
Boiling point :158-162 °C10 mm Hg(lit.)
Density :1.174 g/mL at 25 °C(lit.)
vapor pressure :0.6 hPa (14 °C)
refractive index :n20/D 1.511(lit.)
Flash point :316 °F
storage temp. :2-8°C
solubility :1.24g/l
form :Liquid After Melting
color :Clear colorless to pale brown
Water Solubility :Insoluble
Sensitive :Moisture Sensitive
Merck :14,3858
BRN :611213
CAS DataBase Reference :80-40-0(CAS DataBase Reference)
NIST Chemistry Reference :Benzenesulfonic acid, 4-methyl-, ethyl ester(80-40-0)
EPA Substance Registry System :Benzenesulfonic acid, 4-methyl-, ethyl ester (80-40-0)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes 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 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.