| Identification | More | [Name]
1,4-PENTADIENE | [CAS]
591-93-5 | [Synonyms]
1,4-PENTADIENE
ALLYLETHYLENE
DIVINYLMETHANE
PENTADIENE-1,4
CH2=CHCH2CH=CH2
Penta-1,4-diene
Pentadiene-1,4 (technical)
1,4-PENTADIENE 99+%
1,4-Pentadiene,98+%
PENTADIENE-1,4: TECH. | [EINECS(EC#)]
209-736-9 | [Molecular Formula]
C5H8 | [MDL Number]
MFCD00008665 | [Molecular Weight]
68.12 | [MOL File]
591-93-5.mol |
| Chemical Properties | Back Directory | [Appearance]
colourless liquid | [Melting point ]
-148 °C | [Boiling point ]
26 °C(lit.) | [density ]
0.659 g/mL at 25 °C(lit.)
| [vapor pressure ]
11.91 psi ( 20 °C)
| [refractive index ]
n20/D 1.389(lit.)
| [Fp ]
40 °F
| [storage temp. ]
0-6°C | [solubility ]
Soluble in acetone, alcohol, benzene, and ether (Weast, 1986) | [form ]
Liquid or gas | [pka]
>14 (Schwarzenbach et al., 1993) | [color ]
Clear colorless | [Stability:]
Stable. Highly flammable. Note low boiling point and low flash point. Incompatible with strong oxidizing agents. | [Water Solubility ]
558 mg/kg at 25 °C (shake flask-GC, McAuliffe, 1966) | [BRN ]
1696934 | [Henry's Law Constant]
0.120 at 25 °C (Hine and Mookerjee, 1975) | [CAS DataBase Reference]
591-93-5(CAS DataBase Reference) | [EPA Substance Registry System]
1,4-Pentadiene (591-93-5) |
| Safety Data | Back Directory | [Hazard Codes ]
F+,Xn | [Risk Statements ]
R12:Extremely Flammable.
R65:Harmful: May cause lung damage if swallowed. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking .
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label . | [RIDADR ]
UN 3295 3/PG 1
| [WGK Germany ]
3
| [HazardClass ]
3.1 | [PackingGroup ]
II | [HS Code ]
29012900 |
| Raw materials And Preparation Products | Back Directory | [Raw materials]
1,2,4,5-Tetrabromopentane-->2-METHYL-1,5-HEXADIENE-->2,5-DIMETHYL-1,5-HEXADIENE-->1-PENTEN-4-YNE-->5,5-Dimethyl-2-[4-(trifluoromethyl)phenyl]-1,3,2-dioxaborinane-->Allyl chloride-->Allyl bromide | [Preparation Products]
1,3-Cyclopentadiene-->4,5-Dimethyl-2,6-octadiene.-->TRANS-1,3-PENTADIENE-->TRANS-1,3-PENTADIENE-->CIS-1,3-PENTADIENE-->2-Methyl-2-butene-->propene |
| Hazard Information | Back Directory | [General Description]
A colorless liquid. Less dense than water and insoluble in water. Hence floats on water. | [Reactivity Profile]
1,4-PENTADIENE(591-93-5) may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release gaseous hydrogen. Can undergo exothermic polymerization reactions in the presence of various catalysts (such as acids) or initiators. May undergo autoxidation upon exposure to the air to form explosive peroxides. Violent explosions have occurred at low temperatures in ammonia synthesis gas units. These explosions have been traced to the decomposition of addition products between dienes such as this one and oxides of nitrogen [Bretherick, 1995]. | [Air & Water Reactions]
Highly flammable. Insoluble in water. | [Health Hazard]
Vapor may cause dizziness or suffocation. Contact may irritate skin and eyes. | [Chemical Properties]
colourless liquid | [Uses]
1,4-Pentadiene can be used to obtain bioinsecticidal composition. | [Purification Methods]
Distil it from NaBH4. Purify it by preparative gas chromatography or distillation and stabilize it with 0.1% of 2,6-di-tert-butyl-p-cresol. [Reimann et al. J Am Chem Soc 108 5527 1986, Beilstein 1 IV 998.] |
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