Melting point :196-198 °C (dec.)(lit.)
Boiling point :285.62°C (rough estimate)
Density :1.439 (estimate)
refractive index :1.5220 (estimate)
storage temp. :-20°C
solubility :DMSO (Sparingly), Methanol (Slightly, Heated)
pka :pK1:2.71;pK2:3.48;pK3:8.89(SH);pK4:10.79(SH) (25°C)
form :Powder
color :White to off-white
Water Solubility :Soluble in water, and ethanol (25 mg/ml, results in colorless to light yellow, clear).
Merck :14,8865
BRN :1725150
Stability :Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey :ACTRVOBWPAIOHC-XIXRPRMCSA-N
CAS DataBase Reference :304-55-2(CAS DataBase Reference)
EPA Substance Registry System :Butanedioic acid, 2,3-dimercapto-, (2R,3S)-rel- (304-55-2)

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 H361 Suspected of damaging fertility or the unborn child Reproductive toxicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501
Precautionary statements:	P201 Obtain special instructions before use. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405 Store locked up.