Melting point :260-265 °C (dec.) (lit.)
Boiling point :217.15°C (rough estimate)
Density :1.2829 (rough estimate)
refractive index :1.4880 (estimate)
storage temp. :Store below +30°C.
solubility :cold water: soluble220 part
pka :15.88±0.40(Predicted)
form :powder to crystal
color :White to Almost white
Water Solubility :Slightly soluble in water.
Merck :14,8866
BRN :1753983
Dielectric constant :2.9（22℃）
CAS DataBase Reference :110-14-5(CAS DataBase Reference)
EPA Substance Registry System :Butanediamide (110-14-5)

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 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. P280 Wear protective gloves/protective clothing/eye protection/face protection. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. 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.