Methyl magnesium bromide

119.26 g·mol−1

1.035g/ mL at 25°C

78-80 °C

-20 °C

vigorous reaction with water

clear brown solution when properly stored

UN 3399 4.3/PG 1

R10 - Flammable
R11 - Highly flammable
R12 - Extremely flammable
R14 - Reacts violently with water
R14/15 - Reacts violently with water, liberating extremely flammable gases
R19 - May form explosive peroxides
R22 - Harmful if swallowed
R34 - Causes burns
R48/20 - Harmful: danger of serious damage to health by prolonged exposure through inhalation
R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment
R63 - Possible risk of harm to the unborn child
R65 - Harmful: may cause lung damage if swallowed
R66 - Repeated exposure may cause skin dryness or cracking
R67 - Vapours may cause drowsiness and dizziness

S16 - Keep away from sources of ignition - No smoking
S23 - Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer)
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36/37 - Wear suitable protective clothing and gloves
S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection
S43 - In case of fire use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add - Never use water)
S45 - In case of accident or if you feel unwell seek medical advice immediately (show the label where possible)
S61 - Avoid release to the environment. Refer to special instructions/safety data sheet
S62 - If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label where possible
S9 - Keep container in a well-ventilated place

F, C