Melting point :-47 °C
Boiling point :173-174 °C(lit.)
Density :1.26 g/mL at 25 °C(lit.)
vapor pressure :3 mm Hg ( 20 °C)
refractive index :n20/D 1.461(lit.)
Flash point :163 °F
storage temp. :Store below +30°C.
solubility :Chloroform, DMSO (Sparingly), Ethyl Acetate (Slightly)
form :Liquid
color :Clear colorless to yellow
explosive limit :5.5-11.7%(V)
Water Solubility :soluble in diethyl ether, ethanol, slightly soluble in water.
Sensitive :Moisture Sensitive
BRN :773860
Stability :Hygroscopic, Moisture Sensitive
InChI :1S/C4H6Cl2O/c5-3-1-2-4(6)7/h1-3H2
InChIKey :CDIIZULDSLKBKV-UHFFFAOYSA-N
SMILES :ClCCCC(Cl)=O
CAS DataBase Reference :4635-59-0(CAS DataBase Reference)
NIST Chemistry Reference :Butanoyl chloride, 4-chloro-(4635-59-0)
EPA Substance Registry System :Butanoyl chloride, 4-chloro- (4635-59-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404 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 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. 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.