Methylmagnesium Bromide Property

Boiling point:

78-80℃

Density 

1.035 g/mL at 25 °C

Flash point:

77 °F

storage temp. 

water-free area

form 

Solution, may develop some turbidity precipitate

color 

Pale brown

Water Solubility 

Reacts with water.

Sensitive 

Air & Moisture Sensitive

BRN 

3535220

Exposure limits

ACGIH: TWA 400 ppm; STEL 500 ppm
OSHA: TWA 400 ppm(1200 mg/m3)
NIOSH: IDLH 1900 ppm

InChIKey

AVFUHBJCUUTGCD-UHFFFAOYSA-M

CAS DataBase Reference

75-16-1(CAS DataBase Reference)

EPA Substance Registry System

Magnesium, bromomethyl- (75-16-1)

Safety

Hazard Codes 

C,F+,F

Risk Statements 

12-14-19-22-34-66-67-52/53-10-65-63-48/20-14/15-11-37

Safety Statements 

9-16-26-45-61-36/37/39-62-43-36/37-23

RIDADR 

UN 3399 4.3/PG 1

WGK Germany 

2

RTECS 

OM3700000

F 

1-3-10

TSCA 

Yes

HazardClass 

4.3

PackingGroup 

I

HS Code 

29319090

Hazardous Substances Data

75-16-1(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H226Flammable liquid and vapour

H260In contact with water releases flammable gases which may ignite spontaneously

H261In contact with water releases flammable gas

H302Harmful if swallowed

H304May be fatal if swallowed and enters airways

H314Causes severe skin burns and eye damage

H315Causes skin irritation

H318Causes serious eye damage

H320Causes eye irritation

H335May cause respiratory irritation

H336May cause drowsiness or dizziness

H351Suspected of causing cancer

H371May cause damage to organs

H372Causes damage to organs through prolonged or repeated exposure

H373May cause damage to organs through prolonged or repeated exposure

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P223Keep away from any possible contact with water, because of violent reaction and possible flash fire.

P231+P232Handle under inert gas. Protect from moisture.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P309IF exposed or if you feel unwell:

P310Immediately call a POISON CENTER or doctor/physician.

P335+P334Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages.

P370+P378In case of fire: Use … for extinction.

P402+P404Store in a dry place. Store in a closed container.

P403+P235Store in a well-ventilated place. Keep cool.

P405Store locked up.

P422Store contents under …

P501Dispose of contents/container to..…

Methylmagnesium Bromide Chemical Properties,Usage,Production

Chemical Properties

Clear brown solution when properly stored

Uses

Grignard reagent in greener solvent, 2-methyltetrahydrofuran (2-MeTHF)

Uses

Methylmagnesium bromide is widely used in organic synthesis.

Application

Methylmagnesium bromide solution (3M in diethyl ether) be used to synthesize:
3(4R)-{3(2R,3S)-[4′-(1′-triphenylmethyl)imidazole]-2-bromo-1-oxobutyl)-4-phenyl2-oxazolidinone.
Benzyl 2-(2-oxopropyl)piperidine-1-carboxylate.
(R*, R*) 1-[1-(1-phenylethyl)pyrrolidin-2-yl]propan-2-one).

Definition

Available in solution inether.

General Description

A colorless cloudy solution in diethyl ether. Flash point -49°F. Vapors heavier than air.

Air & Water Reactions

Highly flammable. Reacts with water or moisture in the air to form flammable methane gas. The heat from this reaction may be sufficient to ignite the produced methane [AAR 1991]. Unstable peroxides may form with exposure of the ether to air. This is a slow process.

Reactivity Profile

Organometallics, such as METHYL MAGNESIUM BROMIDE, are reactive with many other groups. Incompatible with acids and bases. Organometallics are good reducing agents and therefore incompatible with oxidizing agents. Often reactive with water to generate toxic or flammable gases.

Hazard

Flammable, dangerous fire and explosionrisk.

Health Hazard

Fire will produce irritating, corrosive and/or toxic gases. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution.

Fire Hazard

Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.

Safety Profile

May ignite spontaneously in air. A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits acrid smoke and irritating fumes.