Epichlorohydrin

(±)-Epichlorohydrin[1]
Epichlorohydrin skeletal structure
(R)-Epichlorohydrin
(S)-Epichlorohydrin
Names
Preferred IUPAC name
2-(Chloromethyl)oxirane
Other names
(Chloromethyl)oxirane
Epichlorohydrin
1-Chloro-2,3-epoxypropane
γ-Chloropropylene oxide
Glycidyl chloride
ECH
Identifiers
3D model (JSmol)
79785
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.128 Edit this at Wikidata
EC Number
  • 203-439-8
164180
KEGG
RTECS number
  • TX4900000
UNII
UN number 2023
  • InChI=1S/C3H5ClO/c4-1-3-2-5-3/h3H,1-2H2 checkY
    Key: BRLQWZUYTZBJKN-UHFFFAOYSA-N checkY
  • InChI=1/C3H5ClO/c4-1-3-2-5-3/h3H,1-2H2
    Key: BRLQWZUYTZBJKN-UHFFFAOYAY
  • ClCC1CO1
Properties
C3H5ClO
Molar mass 92.52 g/mol
Appearance colorless liquid
Odor garlic or chloroform-like
Density 1.1812 g/cm3
Melting point −25.6 °C (−14.1 °F; 247.6 K)
Boiling point 117.9 °C (244.2 °F; 391.0 K)
7% (20°C)[2]
Vapor pressure 13 mmHg (20°C)[2]
Hazards
GHS labelling:
GHS02: FlammableGHS05: CorrosiveGHS06: ToxicGHS07: Exclamation markGHS08: Health hazard
Danger
H226, H301, H311, H314, H317, H331, H350
P201, P202, P210, P233, P240, P241, P242, P243, P260, P261, P264, P270, P271, P272, P280, P281, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P311, P312, P321, P322, P330, P333+P313, P361, P363, P370+P378, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no code
3
3
2
Flash point 32 °C (90 °F; 305 K)
Explosive limits 3.8–21%[2]
Lethal dose or concentration (LD, LC):
3617 ppm (rat, 1 hr)
2165 ppm (rat, 1 hr)
250 ppm (rat, 8 hr)
244 ppm (rat, 8 hr)
360 ppm (rat, 6 hr)[3]
250 ppm (rat, 4 hr)[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 5 ppm (19 mg/m3) [skin][2]
REL (Recommended)
 Carcinogen[2]
IDLH (Immediate danger)
 Ca [75 ppm][2]
Safety data sheet (SDS) External MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Epichlorohydrin (abbreviated ECH) is an organochlorine compound and an epoxide. Despite its name, it is not a halohydrin. It is a colorless liquid with a pungent, garlic-like odor, moderately soluble in water, but miscible with most polar organic solvents.[4] It is a chiral molecule generally existing as a racemic mixture of right-handed and left-handed enantiomers. Epichlorohydrin is a highly reactive electrophilic compound and is used in the production of glycerol, plastics, epoxy glues and resins, epoxy diluents and elastomers.

  1. ^ Merck Index, 12th Edition, 3648.
  2. ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0254". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ a b "Epichlorohydrin". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ "EPA consumer factsheet". Epa.gov. Retrieved 2011-12-02.