(3E)-1,3-Pentadiene
trans-1,3-Pentadiene
CAS: 2004-70-8
Molecular Formula: C5H8
(3E)-1,3-Pentadiene - Names and Identifiers
| Name | trans-1,3-Pentadiene |
| Synonyms | 1,3-PENTADIENE trans-piperylene TRANS-PIPERYLENE (E)-1,3-Pentadiene (3E)-1,3-Pentadiene (3E)-penta-1,3-diene TRANS-1,3-PENTADIENE trans-1,3-Pentadiene 1-Methyl-1,3-Butadiene trans-1,3-Pentadiene (stabilized with TBC) |
| CAS | 2004-70-8 |
| EINECS | 217-909-5 |
| InChI | InChI=1/C5H8/c1-3-5-4-2/h3-5H,1H2,2H3/b5-4+ |
(3E)-1,3-Pentadiene - Physico-chemical Properties
| Molecular Formula | C5H8 |
| Molar Mass | 68.12 |
| Density | 0.678 g/mL at 20 °C0.683 g/mL at 25 °C (lit.) |
| Melting Point | -87 °C (lit.) |
| Boling Point | 42 °C (lit.) |
| Flash Point | <−30°F |
| Vapor Presure | 6.56 psi ( 20 °C) |
| Vapor Density | 2.4 (vs air) |
| Appearance | clear liquid |
| Specific Gravity | 0.6764 |
| Color | Colorless to Almost colorless |
| BRN | 1523659 |
| Storage Condition | 2-8°C |
| Stability | Stable. Highly flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents. |
| Refractive Index | n20/D 1.433(lit.) |
(3E)-1,3-Pentadiene - Risk and Safety
| Risk Codes | R11 - Highly Flammable R65 - Harmful: May cause lung damage if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S23 - Do not breathe vapour. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. |
| UN IDs | UN 3295 3/PG 2 |
| WGK Germany | 3 |
| RTECS | RZ2465000 |
| Hazard Class | 3.1 |
| Packing Group | I |
| Toxicity | LD50 ivn-mus: 18 mg/kg CSLNX* NX#04179 |
(3E)-1,3-Pentadiene - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | 1, 3-pentadiene is a relatively active cationic monomer, but there are many side reactions in its polymerization system, such as chain transfer, cyclization, cross-linking, etc., therefore, the conversion of PD cation polymerization initiated by using a Lewis acid such as AlCl3 is incomplete, the polymer molecular weight is low, and a large amount of gel is produced. It has been reported that the TM SCl /AlCl3 system has a high initiating activity, and the initiated PD polymerization reaction has a high conversion rate and polymerization rate, but the TM SCl has no obvious effect on the gelation phenomenon. |
| Use | 1, 3-pentadiene (PD) is the main component of C5 fraction, which is a by-product of ethylene industry, it is also the main component of aliphatic hydrocarbon petroleum resin synthesized by cationic polymerization. The application of PD homopolymer is limited due to its performance defects. Therefore, the introduction of other olefins for copolymerization has become the main means of resin modification. For example, the copolymerization of PD and isobutylene was studied. The copolymerization of PD and styrene (St) in H dichloromethane was studied, trans isomer of 3-pentadiene. |
| Application | 1, 3-pentadiene including trans-1, 3-pentadiene can be used as a resin raw material for Diene polymerization, its polymer can be used as a modifier of rubber and synthetic resin, can improve the adhesion; Used as a raw material of curing agent of epoxy resin, trans-1, 3-pentadiene reacts with maleic anhydride, formation of 3-methyl tetrahydrophthalic anhydride, is an excellent resin curing agent, this kind of curing agent is cheap, can improve the resin weather resistance, electrical insulation, especially can produce good light transmittance resin; it is also a raw material for sulfone; It is also used as a substitute for turpentine. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
