IUPAC Name: Magnesium prop-1-ene chloride
Synonyms of Magnesium,chloro-2-propen-1-yl- (CAS NO.2622-05-1): Allylmagnesium chloride
Molecular Structure:
Molecular Formula: C₃H₅ClMg
Molecular Weight: 100.83
CAS NO: 2622-05-1
EINECS: 220-067-1 
Melting Point: -21°C
Boiling Point:  66°C
Density:  0.995 g/mL at 25 °C
Flash Point: 1 °F
Storage temp:  water-free area
Water Solubility:  vigorous reaction
H bond acceptors: 0
H bond donors: 0
Freely Rotating Bonds: 2
Polar Surface Area: Å² 
Product Categories: GRIGNARD REAGENTS;Classes of Metal Compounds;Grignard Reagents & Alkyl Metals;Mg (Magnesium) Compounds;Synthetic Organic Chemistry;Typical Metal Compounds;Alkyl;Grignard Reagents;Organometallic Reagents
SMILES: [Cl-].[Mg+]CC=C
InChI: InChI=1/C3H5.ClH.Mg/c1-3-2;;/h3H,1-2H2;1H;/q;;+1/p-1/rC3H5Mg.ClH/c1-2-3-4;/h2H,1,3H2;1H/q+1;/p-1
InChIKey: PLYLAFITHJUEGX-AZFTXRGLAB
Std. InChI: InChI=1S/C3H5.ClH.Mg/c1-3-2;;/h3H,1-2H2;1H;/q;;+1/p-1
Std. InChIKey: PLYLAFITHJUEGX-UHFFFAOYSA-M

Safety Information of Magnesium,chloro-2-propen-1-yl- (CAS NO.2622-05-1):
Hazard Codes: F,C
Risk Statements: 11-14-15-34 
R11: Highly flammable. 
R14 : Reacts violently with water. 
R15: Contact with water liberates extremely flammable gases. 
R34: Causes burns.
Safety Statements: 16-26-36/37/39-43-45-7/8-6-43-33 
S16: Keep away from sources of ignition. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. 
S43: In case of fire use ... (there follows the type of fire-fighting equipment to be used.) 
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S7/8: Keep container tightly closed and dry 
S6: Keep under ... (inert gas to be specified by the manufacturer)
S43: In case of fire use ... (there follows the type of fire-fighting equipment to be used.) 
S33: Take precautionary measures against static discharges.
RIDADR UN: 3399 4.3/PG 1
WGK Germany: 1
F: 1-3-10
HazardClass: 4.2
PackingGroup: I

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Flammable liquid and vapor.
Extinguishing Media: Do NOT use carbon dioxide. Use dry chemical to fight fire. DO NOT USE WATER! 
Handling: Use spark-proof tools and explosion proof equipment. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Handle under an inert atmosphere. Do not allow contact with water. Use only in a chemical fume hood.
Storage: Keep away from sources of ignition. Do not store in direct sunlight. Store in a tightly closed container. Store in a dry area. Flammables-area. Corrosives area. Water free area. Store under nitrogen. Store at room temperature.