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1,2-Pentanediol

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Name

1,2-Pentanediol

EINECS 226-285-3
CAS No. 5343-92-0 Density 0.978 g/cm3
PSA 40.46000 LogP 0.13970
Solubility miscible with water Melting Point 50.86°C (estimate)
Formula C5H12O2 Boiling Point 206 °C at 760 mmHg
Molecular Weight 104.149 Flash Point 104.4 °C
Transport Information N/A Appearance Clear colourless to slightly yellow oily liquid
Safety 24/25 Risk Codes 36/38
Molecular Structure Molecular Structure of 5343-92-0 (1,2-Pentanediol) Hazard Symbols N/A
Synonyms

pentane-1,2-diol;1,2 Pentandiol;

Article Data 89

1,2-Pentanediol Synthetic route

108740-82-5

methyl 2-hydroxyvalerate

5343-92-0

1,2-pentanediol

Conditions
ConditionsYield
With hydrogen at 225℃; under 75007.5 Torr; Temperature; Pressure;99.4%
5343-92-0

1,2-pentanediol

Conditions
ConditionsYield
With CuO#NiO; hydrogen at 215℃; under 157516 Torr; Temperature; Pressure;99.2%
1003-14-1

2-pentyloxirane

5343-92-0

1,2-pentanediol

Conditions
ConditionsYield
With water at 130℃; under 18751.9 Torr;91.2%
With water at 130℃; under 18751.9 Torr;90.2%
With water at 130℃; under 18751.9 Torr;90.2%
98-00-0

(2-furyl)methyl alcohol

A

97-99-4

Tetrahydrofurfuryl alcohol

B

5343-92-0

1,2-pentanediol

Conditions
ConditionsYield
With 5%PtO2-Al2O3; hydrogen In ethanol at 0 - 5℃; under 750.075 Torr; for 5h;A 15%
B 80%
With hydrogen; 5 % platinum dioxide on gamma-aluminum oxide In ethanol at 0 - 5℃; under 750.075 Torr; for 5h;A n/a
B 80%
With water; hydrogen at 120℃; under 22502.3 Torr; for 4h; chemoselective reaction;
617-31-2

2-hydroxyvaleric acid

5343-92-0

1,2-pentanediol

Conditions
ConditionsYield
With hydrogen; water-moist catalyst (coating: 8percent Ru and 1percent Re) In water at 190℃; under 187519 Torr; for 14h; Product distribution / selectivity;72.1%
With hydrogen; 3% Ru 2%Re/C In water at 190℃; under 187519 Torr; for 8h; Product distribution / selectivity;64.6%
98-01-1

furfural

A

111-29-5

1 ,5-pentanediol

B

5343-92-0

1,2-pentanediol

C

71-41-0

pentan-1-ol

Conditions
ConditionsYield
Stage #1: furfural With 0.5% Pd/C; hydrogen; acetic acid; scandium tris(trifluoromethanesulfonate) at 100℃; under 7600.51 Torr; for 6h; Autoclave;
Stage #2: With methanol; water Reagent/catalyst; Temperature; Pressure; Reflux;
A 14%
B 23%
C 62%
124-38-9

carbon dioxide

201230-82-2

carbon monoxide

A

67-56-1

methanol

B

71-23-8

propan-1-ol

C

57-55-6

propylene glycol

D

626-95-9

1,4-Pentanediol

E

111-29-5

1 ,5-pentanediol

F

110-63-4

Butane-1,4-diol

G

60-29-7

diethyl ether

H

34557-54-5

methane

I

64-17-5

ethanol

J

6032-29-7

(+/-)-2-pentanol

K

18826-95-4, 107-88-0

1.3-butanediol

L

5343-92-0

1,2-pentanediol

M

74-84-0

ethane

N

74-98-6

propane

O

115-10-6

Dimethyl ether

P

540-67-0

ethyl methyl ether

Q

78-83-1

2-methyl-propan-1-ol

R

2-pentanol

2-pentanol

S

71-41-0

pentan-1-ol

T

3174-67-2

1,3-pentanediol

U

79-20-9

acetic acid methyl ester

V

67-63-0

isopropyl alcohol

X

75-65-0

tert-butyl alcohol

Y

71-36-3

butan-1-ol

Z

584-03-2

1,2-dihydroxybutane

Conditions
ConditionsYield
With hydrogen; Cu/Co/Al at 260 - 320℃; under 45004.5 - 75007.5 Torr; Conversion of starting material;A 57.5%
B n/a
C n/a
D n/a
E n/a
F n/a
G n/a
H n/a
I 28.5%
J n/a
K n/a
L n/a
M n/a
N n/a
O n/a
P n/a
Q n/a
R n/a
S n/a
T n/a
U n/a
V n/a
W n/a
X n/a
Y n/a
Z n/a
With hydrogen; Cu/ZnO/Al2O3 at 285 - 300℃; under 45004.5 - 67506.8 Torr; Conversion of starting material;A 57.5%
B n/a
C n/a
D n/a
E n/a
F n/a
G n/a
H n/a
I 28.5%
J n/a
K n/a
L n/a
M n/a
N n/a
O n/a
P n/a
Q n/a
R n/a
S n/a
T n/a
U n/a
V n/a
W n/a
X n/a
Y n/a
Z n/a
124-38-9

carbon dioxide

201230-82-2

carbon monoxide

A

67-56-1

methanol

B

71-23-8

propan-1-ol

C

57-55-6

propylene glycol

D

626-95-9

1,4-Pentanediol

E

111-29-5

1 ,5-pentanediol

F

110-63-4

Butane-1,4-diol

G

60-29-7

diethyl ether

H

64-17-5

ethanol

I

6032-29-7

(+/-)-2-pentanol

J

18826-95-4, 107-88-0

1.3-butanediol

K

5343-92-0

1,2-pentanediol

L

115-10-6

Dimethyl ether

M

540-67-0

ethyl methyl ether

N

78-83-1

2-methyl-propan-1-ol

O

584-02-1

2-pentanol

P

71-41-0

pentan-1-ol

Q

3174-67-2

1,3-pentanediol

R

79-20-9

acetic acid methyl ester

S

67-63-0

isopropyl alcohol

U

75-65-0

tert-butyl alcohol

V

71-36-3

butan-1-ol

W

584-03-2

1,2-dihydroxybutane

Conditions
ConditionsYield
With hydrogen; Zn/Cr/K at 350 - 420℃; under 75007.5 - 135014 Torr; Conversion of starting material;A 57.5%
B n/a
C n/a
D n/a
E n/a
F n/a
G n/a
H 28.5%
I n/a
J n/a
K n/a
L n/a
M n/a
N n/a
O n/a
P n/a
Q n/a
R n/a
S n/a
T n/a
U n/a
V n/a
W n/a
623-17-6

furfurylacetate

A

111-29-5

1 ,5-pentanediol

B

5343-92-0

1,2-pentanediol

C

71-41-0

pentan-1-ol

Conditions
ConditionsYield
Stage #1: furfurylacetate With 5%-palladium/activated carbon; hydrogen; acetic acid at 100℃; under 7600.51 Torr; for 6h; Autoclave;
Stage #2: With methanol; water Reagent/catalyst; Temperature; Pressure; Reflux;
A 24%
B 15%
C 56%
98-00-0

(2-furyl)methyl alcohol

A

111-29-5

1 ,5-pentanediol

B

5343-92-0

1,2-pentanediol

C

71-41-0

pentan-1-ol

Conditions
ConditionsYield
Stage #1: (2-furyl)methyl alcohol With 0.5 % platinum on carbon; W(OTf)6; hydrogen; acetic acid at 150℃; under 7600.51 Torr; for 6h; Autoclave;
Stage #2: With methanol; water Reagent/catalyst; Temperature; Pressure; Reflux;
A 24%
B 12%
C 54%
With Cu(50),Zn(50) (X%); hydrogen at 170℃; under 112511 - 187519 Torr; for 2h; Reagent/catalyst; Autoclave;A 26%
B 44.2%
C 13%

1,2-Pentanediol Chemical Properties

IUPAC Name: Pentane-1,2-diol 
Molecular Formula: C5H12O2
Molecular Weight: 104.15g/mol
EINECS: 226-285-3
Density: 0.978 g/cm3
Flash Point: 104.4 °C
Freely Rotating Bonds: 5
Index of Refraction: 1.443
Molar Refractivity: 28.24 cm3
Molar Volume: 106.4 cm3
Polarizability: 11.19 ×10-24 cm3
Surface Tension: 36.6 dyne/cm 
Boiling Point: 206 °C at 760 mmHg
Enthalpy of Vaporization: 51.45 kJ/mol
Vapour Pressure: 0.0575 mmHg at 25 °C 
Appearance: pure colorless to light yellow liquid
Solubility : soluble in alcohol, ether and ethyl acetate and other organic solvent
1,2-Pentanediol , its cas register number is 5343-92-0. The chemical synonyms of 1,2-Pentanediol (CAS NO.5343-92-0)  are Pentane-1,2-diol . Its product categories are Alcohols ; Monomers ; Polymer Science ; Organic Building Blocks ; Oxygen Compounds ; Polyols . The structure of 1,2-Pentanediol (CAS NO.5343-92-0) is
                       

1,2-Pentanediol Uses

 1,2-Pentanediol (CAS NO.5343-92-0) can be used as fungicide propiconazole intermediate.

1,2-Pentanediol Safety Profile

Risk Statements:  36/38
36/38:  Irritating to eyes and skin  
Safety Statements:  24/25
24/25:  Avoid contact with skin and eyes 
WGK Germany: 1
RTECS: SA0455000
F: 3

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