Melting point :96-99 °C(lit.)
Boiling point :140°C 20mm
Density :1,24 g/cm³
vapor density :5.9 (vs air)
refractive index :1,382-1,384
Flash point :180 °C
storage temp. :Store at +5°C to +30°C.
solubility :H₂O: 0.1 g/mL, clear
Colour Index :42655
form :Solid
color :White to pink
PH :1 (650g/l, H2O, 20℃)(anhydrous substance)
Water Solubility :soluble
Sensitive :Hygroscopic
Merck :14,9533
BRN :3568023
Stability :Stable. Incompatible with strong oxidizing agents, strong bases, most common metals. Protect from moisture.
InChIKey :KJIFKLIQANRMOU-UHFFFAOYSA-N
CAS DataBase Reference :6192-52-5(CAS DataBase Reference)
EPA Substance Registry System :Benzenesulfonic acid, 4-methyl-, monohydrate (6192-52-5)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404 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 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P234 Keep only in original container. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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.