DIETHYLALUMINUM CHLORIDE Property

Melting point:

-85°C

Boiling point:

125°C 50mm

Density 

0.887 g/mL at 25 °C

vapor pressure 

3 mmHg ( 60 °C)

Flash point:

−9 °F

storage temp. 

0-6°C

solubility 

Miscible with hexane.

form 

Solution

Specific Gravity

0.711 (20/4℃）

color 

Colorless

Water Solubility 

reac H2O [CRC10]

Sensitive 

Air & Moisture Sensitive

Merck 

326

BRN 

4123259

CAS DataBase Reference

96-10-6(CAS DataBase Reference)

EPA Substance Registry System

Aluminum, chlorodiethyl- (96-10-6)

Safety

Hazard Codes 

F,C,N

Risk Statements 

14-17-34-67-65-62-51/53-48/20-14/15-11-63-50/53

Safety Statements 

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

RIDADR 

UN 3394 4.2/PG 1

WGK Germany 

2

RTECS 

BD0558000

F 

10

TSCA 

Yes

HazardClass 

4.3

PackingGroup 

I

HS Code 

29319090

Hazardous Substances Data

96-10-6(Hazardous Substances Data)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H250Catches fire spontaneously if exposed to air

H260In contact with water releases flammable gases which may ignite spontaneously

H304May be fatal if swallowed and enters airways

H314Causes severe skin burns and eye damage

H336May cause drowsiness or dizziness

H373May cause damage to organs through prolonged or repeated exposure

H412Harmful to aquatic life with long lasting effects

Precautionary statements

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

P231+P232Handle under inert gas. Protect from moisture.

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

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

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.

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

DIETHYLALUMINUM CHLORIDE Chemical Properties,Usage,Production

Chemical Properties

colorless solution

Chemical Properties

The aluminum alkyl halides are flammable, reactive, and may be spontaneously combustible in air. They are colorless to yellow liquids. Ethylaluminum dichloride:(563-43-9):

Production Methods

Ethylaluminum sesquichloride (26.5 kg) added to a nitrogen-purged reactor, was heated to 175 ℃. Then, while the mixture was stirred vigorously, 1.1 kg sodium was added over a 30 min period; the mixture was further heated at 155 – 190 ℃ for 60 min. The diethylaluminum chloride product distilled from the reactor at 100 – 161 ℃ (1.3 – 6.1 kPa). In this example, an excess of ethylaluminum sesquichloride was employed to facilitate draining the voluminous byproduct salt and aluminum solids from the reactor. In an alternate approach, a heavy hydrocarbon oil, added prior to reaction, may be employed to remove the solids in slurry form, permitting the use of a stoichiometric ratio of ethylaluminum sesquichloride and sodium reactants.

General Description

Colorless liquid. Dangerous fire and explosion hazard. Used as an intermediate in production of organometallics.

Air & Water Reactions

Pyrophoric in air [Hawley]. Reacts violently with water, Rose(1961).

Reactivity Profile

Organometallics, such as DIETHYLALUMINUM CHLORIDE, 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. Organometallics containing halogens (fluorine, chlorine, bromine, iodine) bonded to the metal typically with generate gaseous hydrohalic acids (HF, HCl, HBr, HI) with water.

Potential Exposure

These materials are used as components of olefin polymerization catalysts. The reader is referred to the entry on “Aluminum alkyls” for additional information on this entry. The aluminum alkyl halides parallel very closely the aluminum alkyls

Shipping

UN3052 Spontaneously combustible. Water reactive releasing large quantities of toxic and deadly hydrogen gas. (Note: this number does not appear in the 49/CFR HazMat tables)

Purification Methods

Distil it from excess dry NaCl (to remove ethyl aluminium dichloride) in a 50-cm column containing a heated nichrome spiral. [Beilstein 4 IV 4403.]

Incompatibilities

The aluminum alkyl halides are strong reducing agents; they react—possibly violently—with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. These chemicals react violently with nitromethaneEthylaluminum sesquichloride reacts explosively with carbon tetrachloride at room temperature. This chemical reacts violently with water, forming corrosive hydrogen chloride and flammable ethane gas. Diethylaluminum chloride may form an explosive product with chlorine azide.