Melting point :>300 °C(lit.)
Boiling point :288 ℃
bulk density :620kg/m3
Density :1.485
vapor pressure :0Pa at 25℃
refractive index :1.5500 (estimate)
storage temp. :Store below +30°C.
solubility :10g/l
pka :3.24(at 25℃)
form :solid
color :White to Off-White
PH :2.5 (10g/l, H2O, 20℃)
Water Solubility :0.1 g/100 mL (20 ºC)
Merck :14,8926
BRN :908765
Henry's Law Constant :1.1×10⁷ mol/(m³Pa) at 25℃, HSDB (2015)
Stability :Stable. Incompatible with strong oxidizing agents.
InChI :1S/C6H7NO3S/c7-5-1-3-6(4-2-5)11(8,9)10/h1-4H,7H2,(H,8,9,10)
InChIKey :HVBSAKJJOYLTQU-UHFFFAOYSA-N
SMILES :Nc1ccc(cc1)S(O)(=O)=O
LogP :-2.3 at 25℃
CAS DataBase Reference :121-57-3(CAS DataBase Reference)
NIST Chemistry Reference :Benzenesulfonic acid, 4-amino-(121-57-3)
EPA Substance Registry System :Sulfanilic acid (121-57-3)

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 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. 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. P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention. P337+P313 IF eye irritation persists: Get medical advice/attention. P501 Dispose of contents/container to..…