Melting point :-53.9°C (estimate)
Boiling point :86-87 °C/50 mmHg (lit.)
Density :0.995 g/mL at 25 °C (lit.)
vapor density :>1 (vs air)
FEMA :3477 | 2,3-BUTANEDITHIOL
refractive index :n20/D 1.5194(lit.)
Flash point :126 °F
pka :9.93±0.10(Predicted)
form :liquid (estimate)
Specific Gravity :0.995
color :Colorless to Light yellow to Light orange
Odor :at 0.10 % in propylene glycol. meaty beefy
Odor Type :sulfurous
JECFA Number :539
LogP :2.004 (est)
CAS DataBase Reference :4532-64-3(CAS DataBase Reference)
EPA Substance Registry System :2,3-Butanedithiol (4532-64-3)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning 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:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P370+P378 In case of fire: Use … for extinction.