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2-Methyl-1,3-dioxolane

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Name

2-Methyl-1,3-dioxolane

EINECS 207-841-4
CAS No. 497-26-7 Density 0.97g/cm3
PSA 18.46000 LogP 0.37920
Solubility very soluble SOLVENT Melting Point N/A
Formula C4H8 O2 Boiling Point 82 - 83 C
Molecular Weight 88.1063 Flash Point -2 C
Transport Information HAZARD Appearance clear liquid
Safety Moderately toxic by ingestion. Mildly toxic by inhalation. A skin and eye irritant. When heated to decomposition it emits acrid smoke and irritating fumes. Risk Codes 11-36
Molecular Structure Molecular Structure of 497-26-7 (2-METHYL-1,3-DIOXOLANE) Hazard Symbols 2 (Packing Group: II) UN NO.
Synonyms

2-Methyl-1,3-dioxacyclopentane;2-Methyl-1,3-dioxolane;2-Methyldioxolane;Methyl dioxolane;NSC 5209;

Article Data 73

2-Methyl-1,3-dioxolane Synthetic route

107-21-1

ethylene glycol

75-07-0

acetaldehyde

497-26-7

2-methyl-1,3-dioxolane

Conditions
ConditionsYield
With chloro-trimethyl-silane at 20℃; for 0.416667h;97%
With toluene-4-sulfonic acid 1.)cooling, 1 h 2.)20 deg C, 20 h;57%
With C6H12Bi6O28S6 for 4h; Reflux;10%
64-17-5

ethanol

107-21-1

ethylene glycol

497-26-7

2-methyl-1,3-dioxolane

Conditions
ConditionsYield
With iron(III) chloride hexahydrate; sodium nitrite at 50℃; for 24h; Temperature; Time; UV-irradiation;67%
4360-63-8

2-bromomethyl-1,3-dioxolane

24398-88-7

ethyl 3-bromobenzoate

A

497-26-7

2-methyl-1,3-dioxolane

B

4405-17-8

di(1,3-dioxolan-2-yl)methane

C

93-89-0

benzoic acid ethyl ester

D

898776-72-2

ethyl 3-((1,3-dioxolan-2-yl)methyl)benzoate

E

3,3'-dicarbethoxybiphenyl

Conditions
ConditionsYield
With pyridine; 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone; 1,10-Phenanthroline; NiI2*3.5H2O; sodium iodide; zinc at 20 - 60℃; for 19h; chemoselective reaction;A n/a
B n/a
C n/a
D 66%
E n/a
110-80-5

2-ethoxy-ethanol

546-67-8

lead(IV) tetraacetate

A

497-26-7

2-methyl-1,3-dioxolane

B

111-15-9

2-ethoxyethyl acetate

C

141-78-6

ethyl acetate

Conditions
ConditionsYield
In chlorobenzene at 140℃; for 0.5h;A 27%
B 63%
C 10%
110-80-5

2-ethoxy-ethanol

A

497-26-7

2-methyl-1,3-dioxolane

B

111-15-9

2-ethoxyethyl acetate

C

141-78-6

ethyl acetate

Conditions
ConditionsYield
With lead(IV) acetate In chlorobenzene at 140℃; for 0.5h; glass tube;A 27%
B 63%
C 10%
764-48-7

2-hydroxyethyl vinyl ether

497-26-7

2-methyl-1,3-dioxolane

Conditions
ConditionsYield
With potassium hydroxide at 120℃; Product distribution; cyclization, various alkalis;51%
With sulfuric acid
107-21-1

ethylene glycol

A

497-26-7

2-methyl-1,3-dioxolane

B

123-91-1

1,4-dioxane

C

75-07-0

acetaldehyde

D

111-46-6

diethylene glycol

Conditions
ConditionsYield
With tungsten trioxide on silica; hydrogen In water at 340℃; Temperature; Inert atmosphere;A 38.8%
B 28.7%
C 44.9%
D n/a
110-80-5

2-ethoxy-ethanol

A

497-26-7

2-methyl-1,3-dioxolane

B

628-35-3

ethylene glycol monoformate

C

22056-82-2

ethoxyacetaldehyde

D

109-94-4

formic acid ethyl ester

Conditions
ConditionsYield
With air; methyl nitrite; nitrogen(II) oxide at 23.85℃; under 750 Torr; for 2h; Oxidation; UV-irradiation; Further byproducts given;A 3.4%
B 36%
C 24%
D 43%
107-21-1

ethylene glycol

A

497-26-7

2-methyl-1,3-dioxolane

B

111-46-6

diethylene glycol

Conditions
ConditionsYield
With synthetic silica ge at 150℃; for 24h; Kinetics; Autoclave; Green chemistry;A 40%
B 9%
107-21-1

ethylene glycol

74-86-2

acetylene

A

497-26-7

2-methyl-1,3-dioxolane

B

764-78-3

ethylene glycol divinyl ether

C

764-48-7

2-hydroxyethyl vinyl ether

Conditions
ConditionsYield
With sodium hydroxide; cesium fluoride at 138 - 142℃; under 10297.1 Torr; for 3.5h;A 4%
B 11%
C 26%

2-Methyl-1,3-dioxolane Chemical Properties

Product Name: 2-Methyl-1,3-dioxolane (CAS NO.497-26-7)


Molecular Formula: C4H8O2
Molecular Weight: 88.11g/mol
Mol File: 497-26-7.mol
Einecs: 207-841-4
Appearance: Clear colorless liquid
Boiling point: 82.4 °C at 760 mmHg
Storage Temperature: Flammables area
Flash Point: 4 °C
Density: 0.97 g/cm3
Refractive index: n20/D 1.398(lit.)
Sensitive: Moisture Sensitive
Surface Tension: 27.9 dyne/cm
Enthalpy of Vaporization: 30.96 kJ/mol
Vapour Pressure: 87.6 mmHg at 25°C
XLogP3-AA: 0.2
H-Bond Donor: 0
H-Bond Acceptor: 2
Product Categories: Dioxanes & Dioxolanes; Dioxolanes

2-Methyl-1,3-dioxolane Toxicity Data With Reference

1.    

skn-rbt 500 mg/24H MLD

    85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,797.
2.    

eye-rbt 20 mg/24H MOD

    85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,797.
3.    

orl-rat LD50:2900 mg/kg

    GISAAA    Gigiena i Sanitariya. 47 (8)(1982),89.
4.    

ihl-rat LC50:80 g/m3

    GISAAA    Gigiena i Sanitariya. 39 (11)(1974),94.
5.    

orl-mus LD50:3500 mg/kg

    GISAAA    Gigiena i Sanitariya. 39 (11)(1974),94.
6.    

ihl-mus LC50:59 g/m3

    GISAAA    Gigiena i Sanitariya. 39 (11)(1974),94.

2-Methyl-1,3-dioxolane Consensus Reports

Reported in EPA TSCA Inventory.

2-Methyl-1,3-dioxolane Safety Profile

Moderately toxic by ingestion. Mildly toxic by inhalation. A skin and eye irritant. When heated to decomposition it emits acrid smoke and irritating fumes.
Safety Information of 2-Methyl-1,3-dioxolane (CAS NO.497-26-7):
Hazard Codes: F,Xi
Risk Statements: 11-36 
11:  Highly Flammable 
36:  Irritating to the eyes
Safety Statements: 16-26
16:  Keep away from sources of ignition - No smoking
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice

2-Methyl-1,3-dioxolane Specification

2-Methyl-1,3-dioxolane ,its CAS NO. is 497-26-7,the synonyms is 2-Methyl-1,3-dioxacyclopentane ; 2-Methyl-3-dioxolane ; 2-Methyldioxolane ; Acetaldehyde ethylene acetal ; 2-Methyl-1,3-dioxolane ; Methyldioxolane .

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