Melting point :25-28 °C(lit.)
Boiling point :144-145 °C5 mm Hg(lit.)
Density :1.234 g/mL at 25 °C(lit.)
vapor density :6.45 (vs air)
vapor pressure :1 mm Hg ( 20 °C)
refractive index :n20/D 1.5172(lit.)
Flash point :>230 °F
storage temp. :2-8°C
solubility :Chloroform (Slightly), Methanol (Slightly)
form :Liquid or Low Melting Solid
color :White to yellow
Water Solubility :Insoluble
Sensitive :Moisture Sensitive
BRN :609209
LogP :1.88 at 25℃
CAS DataBase Reference :80-48-8(CAS DataBase Reference)
NIST Chemistry Reference :Benzenesulfonic acid, 4-methyl-, methyl ester(80-48-8)
EPA Substance Registry System :Benzenesulfonic acid, 4-methyl-, methyl ester (80-48-8)

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 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, 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. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. 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.