Melting point :−89 °C(lit.)
Boiling point :102 °C(lit.)
Density :1.026 g/mL at 25 °C(lit.)
vapor density :3.7 (vs air)
vapor pressure :39 hPa (20 °C)
refractive index :n20/D 1.412(lit.)
RTECS :EM0595000
Flash point :71 °F
storage temp. :Store below +30°C.
solubility :Miscible with ether.
form :Liquid
color :Clear slightly yellow
Odor :pungent odor
explosive limit :2.5-7.3%(V)
Water Solubility :decomposes
FreezingPoint :-89℃
Sensitive :Moisture Sensitive
Merck :14,1598
BRN :605395
InChIKey :DVECBJCOGJRVPX-UHFFFAOYSA-N
LogP :0.51 at 25℃
CAS DataBase Reference :141-75-3(CAS DataBase Reference)
NIST Chemistry Reference :Butanoyl chloride(141-75-3)
EPA Substance Registry System :Butanoyl chloride (141-75-3)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.