Melting point :182-189 °C
Boiling point :194.0±13.0 °C(Predicted)
Density :1.161 (estimate)
refractive index :1.5605 (estimate)
storage temp. :2-8°C
solubility :DMSO, Methanol
pka :pK1:1.43(＋1);pK2:8.86(0) (20°C)
form :Crystalline Powder
color :Yellow to yellow-green or brown
InChIKey :FHTDDANQIMVWKZ-UHFFFAOYSA-N
CAS DataBase Reference :4556-23-4(CAS DataBase Reference)
NIST Chemistry Reference :4-Pyridinethiol(4556-23-4)

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.