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Cas Database |
| Name |
4-Methylpenta-1,3-diene |
EINECS | N/A |
| CAS No. | 926-56-7 | Density | 0.707g/cm3 |
| PSA | 0.00000 | LogP | 2.13860 |
| Solubility | N/A | Melting Point |
-94.9°C (estimate) |
| Formula | C6H10 | Boiling Point | 76.5°Cat760mmHg |
| Molecular Weight | 82.1454 | Flash Point | °C |
| Transport Information | N/A | Appearance | N/A |
| Safety | A very dangerous fire hazard when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes. See also 2-METHYL-1,3-PENTADIENE. | Risk Codes | 11-65 |
| Molecular Structure |
|
Hazard Symbols |
 
|
| Synonyms |
1,1-Dimethyl-1,3-butadiene;1,1-Dimethylbutadiene; 2-Methyl-2,4-pentadiene; 4-Methyl-1,3-pentadiene |
Article Data | 73 |
4-Methylpenta-1,3-diene Synthetic route
- 76109-67-6
N-(1-isopropylallyloxycarbonyl)aniline
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 97206-71-8
4-methyl-3-(phenylamino)pent-1-ene
C
- 62-53-3
aniline
| Conditions | Yield |
|---|---|
| PdLn In 1,4-dioxane at 100℃; for 0.25h; | A n/a B 2 % Chromat. C 98% |
- 926-56-7
4-methyl-1,3-pentadiene
| Conditions | Yield |
|---|---|
| With tetrabutyl ammonium fluoride In dimethyl sulfoxide at 25℃; | 72% |
- 146514-07-0
(E)-but-2-en-1-yl phenylcarbamate
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 35755-80-7
(E)-N-(2-butenyl)aniline
C
- 62-53-3
aniline
| Conditions | Yield |
|---|---|
| PdLn In 1,4-dioxane at 100℃; for 6h; | A n/a B 70% C 30% |
- 107-86-8
3,3-dimethyl acrylaldehyde
- 1779-49-3
Methyltriphenylphosphonium bromide
- 926-56-7
4-methyl-1,3-pentadiene
| Conditions | Yield |
|---|---|
| With n-butyllithium In diethyl ether; pentane for 12h; Ambient temperature; | 57% |
| With n-butyllithium In diethyl ether; toluene at 20℃; Inert atmosphere; | 14% |
- 3664-56-0
1,3,3-trimethylcyclopropene
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 21020-27-9
4-methylpent-2-yne
C
- 3043-33-2
2-methyl-2,3-pentadiene
D
- 926-54-5
trans-2-methyl-1,3-pentadiene
| Conditions | Yield |
|---|---|
| In pentane at 23℃; Irradiation; Further byproducts given; | A 37% B 14% C 31% D 11% |
- 3664-56-0
1,3,3-trimethylcyclopropene
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 21020-27-9
4-methylpent-2-yne
C
- 3043-33-2
2-methyl-2,3-pentadiene
D
- 513-81-5
2,3-dimethyl-buta-1,3-diene
| Conditions | Yield |
|---|---|
| In pentane at 23℃; Irradiation; Further byproducts given; | A 37% B 14% C 31% D 7% |
- 3664-56-0
1,3,3-trimethylcyclopropene
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 21020-27-9
4-methylpent-2-yne
C
- 3043-33-2
2-methyl-2,3-pentadiene
D
- 926-54-5
trans-2-methyl-1,3-pentadiene
E
- 513-81-5
2,3-dimethyl-buta-1,3-diene
| Conditions | Yield |
|---|---|
| In pentane at 23℃; Product distribution; Irradiation; | A 37% B 14% C 31% D 11% E 7% |
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 1118-58-7
1,3-Dimethyl-1,3-butadien
C
- 1489-61-8
1,3-dimethylcyclobutene
| Conditions | Yield |
|---|---|
| With tert.-butyl lithium | A 19% B 32% C 37% |
- 107-41-5
2-methyl-2,4-pentanediol
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 926-54-5
trans-2-methyl-1,3-pentadiene
| Conditions | Yield |
|---|---|
| With hydrogen bromide In water Dehydration; | A 7% B n/a |
- 5182-37-6
2,4,4,6-tetramethyl-1,3-dioxane
A
- 926-56-7
4-methyl-1,3-pentadiene
B
- 1118-58-7
1,3-Dimethyl-1,3-butadien
| Conditions | Yield |
|---|---|
| With phosphate-catalyst; water at 325℃; |
4-Methylpenta-1,3-diene Chemical Properties
IUPAC Name: 4-Methylpenta-1,3-diene
Synonyms: 4-Methylpenta-1,3-diene ; 1,3-Pentadiene, 4-methyl- ; 3-Methyl-1,4-pentadiene ; 4-Methyl-1,3-pentadiene ; Penta-1,3-diene, 4-methyl-
The Molecular Formula of 4-Methylpenta-1,3-diene (CAS NO.926-56-7):C6H10
The Molecular Weight of 4-Methylpenta-1,3-diene (CAS NO.926-56-7):82.1436g/mol
The Molecular Structure of 4-Methylpenta-1,3-diene (CAS NO.926-56-7):
Index of Refraction: 1.421
Molar Refractivity: 29.47 cm3
Molar Volume: 116 cm3
Surface Tension: 19.2 dyne/cm
Density: 0.707 g/ cm3
Flash Point: -18°C
Enthalpy of Vaporization: 30.44 kJ/mol
Boiling Point: 76.5 °C at 760 mmHg
Vapour Pressure: 111 mmHg at 25°C
4-Methylpenta-1,3-diene Uses
4-Methylpenta-1,3-diene ,whose cas register No. is 926-56-7, can be used as reducing agent.
4-Methylpenta-1,3-diene Safety Profile
A very dangerous fire hazard when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes. See also 2-METHYL-1,3-PENTADIENE.
Hazard Codes: 
F,
Xn
Risk Statements: 11-65
R11:Highly flammable.
R65:Harmful: may cause lung damage if swallowed.
Safety Statements: 16-36-62
S16:Keep away from sources of ignition.
S36:Wear suitable protective clothing.
S62:If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label.
RIDADR: UN 2461 3/PG 2
WGK Germany: 3
HazardClass: 3.1
PackingGroup: II
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