IDENTIFICATION
Molecular formula : C
5-H
12-O
2
Developped formula : CH
3-CH
2O-CH
2O-CH
2-CH
3
CAS n° : 462-95-3
UN n° : 2373
| Synonyms : |
Diethoxymethane |
|
Diethylformal |
PHYSICAL
PROPERTIES
| Colourless liquid
|
|
| Boiling point : |
87.5°C
|
| Density (d204) : |
0.839 |
| Vapour pressure
: |
60 mm at 25°C |
| Flash point : |
- 5°C |
| Autoignition temperature
: |
174°C |
| Molecular weight
: |
104.17 |
| Refractory index
: |
hD20
= 1.3730 |
List of azeotropes
Ethylal makes azeotropes with the following products :
|
Boiling point |
% of ethylal |
Ethanol
Water
Ethanol - water
Methanol
Isopropylic alcohol (82.45°)
Cyclo hexane (80.75°)
Ethyl nitrate (87.68°)
Ethyl sulphur (92.1°)
Methyl carbonate (90.35°)
2 iodopropane (89.35°)
propyl alcohol (97.2°)
n Heptane (98.4°)
1,2-dichloroethane (83.45°)
trichloroethylene (86.9°)
CHBrCl2 (90.2°)
thiophene (84.7°)
triethylamine (89.35°)
allyl alcohol (96.95°)
isopropyl acetate (91°)
|
74.2°C
75.2°C
73.2°C
63.2°C
79.6°C
80.1°C
85.85°C
85.9°C
86°C
86.15°C
86.15°C
87.8°C
88.95°C
89.2°C
94.05°C
< 83.9°C
< 86.8°C
< 87°C
< 87.6°C
|
58
90
69,5 (18.4 % ethanol - 12.1 % water)
35
48
17
51
65
60
63
89
4
78
46.5
26
89
> 68
|
Ethylal makes no azeotropes with :
n-Hexane
methyl cyclohexane
benzene
isopropyl ether
CS
2
tetrahydrothiophene
1-chlorobutane
isobutylalcohol
ter-amylalcohol
acetic acid
acetone
2-butanone
3-methyl-2-butanone
propyl formiate
isobutyl formiate
ethyl acetate
ethyl propionate
methyl isobutyrate
butyl nitrate
propyl alcohol - water
CHEMICAL
PROPERTIES
Reactivity data
Incompatibilities
Strong oxidizing agents.
Strong acids.
Hazardous Combustion or Decomposition Products
Toxic fumes of : carbon monoxide, carbon dioxide.
APPLICATIONS
- Pharmacy
- Glues
SPECIFICATIONS
Our actual specifications are (one quality) :
| Ethylal |
99.9 % min. |
|
| Water |
0,02 % max |
(200ppm) |
| Ethanol |
0,01 % max |
(100ppm) |
| Aldehydes |
0,01 % max |
(100ppm) |
| BHT |
0,01 % max |
(100ppm) |
HEALTH & SAFETY
Toxicity data
Acute Toxicity Data
| Oral LD-50 |
(rat) : 3536 mg/kg
(rabbit) : 2604 mg/kg |
Inhalation LC-50 (rat) : 6643 ppm/6 hours
Dermal LD-50 (rat) : > 20 ml/kg
Skin irritation (guinea pig) : very slight
Skin sensitization (guinea pig) : none
Eye irritation (rabbit, unwashed eyes) : slight
Eye irritation (rabbit, washed eyes) : slight
Subchronic Toxicity Data
| Inhalation study (16 exposures,
rat): |
LOEL = 1500 ppm (increase in
weight: liver)
NOEL = 750 ppm< |
|
LOEL = lowest-observed-effect level
NOEL = no-observed-effect level |
| Ethylal is not
known to cause cancer, nor adverse reproduction effects. |
Health hazard data
Acute Effects
May be harmful by inhalation, ingestion, or skin absorption. Vapour
or mist is irritating to the eyes, mucous membranes and upper respiration tract.
Causes skin irritation.
To the best of our knowledge, the chemical, physical, and toxicological properties
have not been thoroughly investigated.
First Aid
In case of contact, immediately flush eyes with copious amounts of
water for at least 15 minutes.
In case of contact, immediately wash skin with soap and copious amounts of water.
If inhaled, remove to fresh air. If not breathing give artificial respiration.
If breathing is difficult, give oxygen.
If swallowed, wash out mouth with water provided the person is conscious. Call
a physician.
Wash contaminated clothing before reuse.
Fire and explosion hazard data
Special Fire Fighting Procedures
Wear self-contained breathing apparatus and protective clothing to
prevent contact with skin and eyes.
Flammable liquid.
Unusual Fire and Explosions Hazard
Vapour may travel considerable distance to source of ignition and
flash back.
Emits toxic fumes under fire conditions.
HANDELING, STORAGE AND TRANSPORT
Wear appropriate NIOSH/MSHA-approved respirator, chemical-resistant gloves,
safety goggles, other protective cloting.
Safety shower and eye bath.
Use only in a chemical fume hood.
Do not breathe vapour.
Do not get in eyes, on skin, on clothing.
Avoid prolonged or repeated exposure.
Wash thoroughly after handling.
Irritant.
Keep tightly closed.
Keep away from heat, sparks, and open flame.
May develop pressure.
Refrigerate before opening.
Irritating to eyes, respiratory system and skin.
Keep away from sources of ignition. No smoking.
In case of contact with eyes, rinse immediately with plenty of water and seek
medical advice.
Wear suitable protective clothing, gloves and eye/face protection.
Transport
ADR Class 3,
II
I.D. n° : 33
UN n° : 2373
IMO : Class 3
EMS n° : 3-06
MFAG n° : 330
