2,5-Norbornadiene
- CAS No.
- 121-46-0
- Chemical Name:
- 2,5-Norbornadiene
- Synonyms
- Norbornadiene;BICYCLO[2.2.1]HEPTA-2,5-DIENE;Norborna-2,5-diene;Bicyclo[2.2.1]heptadiene;BICYCLO[2.2.1]-2,5-HEPTADIENE;Norbornadine;2,5-NORBORNADINE;Bicycloheptadiene;2,5-NORBORNADIENE;Dicycloheptadiene
- CBNumber:
- CB7406300
- Molecular Formula:
- C7H8
- Molecular Weight:
- 92.14
- MDL Number:
- MFCD00082301
- MOL File:
- 121-46-0.mol
- MSDS File:
- SDS
| Melting point | -20--19°C |
|---|---|
| Boiling point | 89 °C(lit.) |
| Density | 0.906 g/mL at 25 °C(lit.) |
| vapor pressure | 69 hPa (20 °C) |
| refractive index |
n |
| Flash point | 12 °F |
| storage temp. | Store below +30°C. |
| solubility | Chloroform (Sparingly) |
| form | A liquid |
| color | Colorless to Almost colorless |
| Odor | Very diffusive, gassy-piney, camphoraceous-woody odor |
| explosive limit | 1.6-6.3%(V) |
| Water Solubility | Immiscible with water. |
| λmax | 195nm(EtOH)(lit.) |
| BRN | 506224 |
| Stability | Volatile |
| InChIKey | SJYNFBVQFBRSIB-UHFFFAOYSA-N |
| LogP | 2.67 at 25℃ and pH7 |
| Surface tension | 64.3-64.4mN/m at 900μg/L and 20.3℃ |
| CAS DataBase Reference | 121-46-0(CAS DataBase Reference) |
| EWG's Food Scores | 1 |
| FDA UNII | W9ZTQ75ZUS |
| NIST Chemistry Reference | 2,5-Norbornadiene(121-46-0) |
| EPA Substance Registry System | 2,5-Norbornadiene (121-46-0) |
| UNSPSC Code | 12352300 |
| NACRES | NA.23 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS02 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225 | |||||||||
| Precautionary statements | P210-P233-P240-P241-P242-P243 | |||||||||
| Hazard Codes | F | |||||||||
| Risk Statements | 11 | |||||||||
| Safety Statements | 16-23 | |||||||||
| RIDADR | UN 2251 3/PG 2 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | RB6535000 | |||||||||
| F | 13 | |||||||||
| Autoignition Temperature | 350 °C | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29021990 | |||||||||
| Toxicity | LD50 orl-rat: 890 mg/kg SHELL* | |||||||||
| NFPA 704 |
|
2,5-Norbornadiene price More Price(15)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | B33803 | Bicyclo[2.2.1]hepta-2,5-diene 98% | 121-46-0 | 5ml | $40.3 | 2024-03-01 | Buy |
| Sigma-Aldrich | B33803 | Bicyclo[2.2.1]hepta-2,5-diene 98% | 121-46-0 | 100ml | $232 | 2024-03-01 | Buy |
| Sigma-Aldrich | 8.20918 | 2,5-Norbornadiene (stabilised) for synthesis | 121-46-0 | 250ML | $212 | 2024-03-01 | Buy |
| TCI Chemical | N0346 | 2,5-Norbornadiene (stabilized with BHT) >97.0%(GC) | 121-46-0 | 25mL | $55 | 2024-03-01 | Buy |
| TCI Chemical | N0346 | 2,5-Norbornadiene (stabilized with BHT) >97.0%(GC) | 121-46-0 | 100mL | $158 | 2024-03-01 | Buy |
2,5-Norbornadiene Chemical Properties,Uses,Production
Chemical Properties
2,5-Norbornadiene, also known as dicycloheptadiene, is a clear colorless to slightly yellow liquid that is soluble in petroleum ether and insoluble in water. Commercially available goods usually contain 500 ppm of 2,6-di-tert-butyl-p-methylphenol (BHT) as a stabilizer. Analyzing the structural characteristics of NBD, it can be found that it has good reaction properties and can synthesize a variety of organic compounds through addition or substitution reactions at the double bond.
Uses
2,5-Norbornadiene is used as an intermediate in prostaglandin synthesis and shows anti-ethylene effect on plants. It acts as a starting material for the synthesis of diamantane and as an acetylene transfer agent for instance, in reaction with 3,6-di-2-pyridyl-1,2,4,5-tetrazine. It is also a useful dienophile in Diels-Alder reactions.
Uses
2,5-Norbornadiene is industrially available
as a chemical intermediate. It was not intended
for use in perfumes, and it is only occasionally
used as such. It serves mainly as a starting
material for the manufacture of industrial
chemicals, etc.
2,5-Norbornadiene has occasionally been used in
Pine needle fragrances to improve the diffusiveness of the fragrance, and to lend initial
power and short life to the fragrances which
are intended for "short-effect" purposes, e.g.
dishwashing detergent fragrances, etc.
It is also used as a masking agent when a
volatile and powerful material is needed at
low cost.
Preparation
2,5-Norbornadiene is of interest as a metal-binding ligand, whose complexes are useful for homogeneous catalysis. Norbornadiene can be formed by a Diels-Alder reaction between cyclopentadiene and acetylene.
General Description
2,5-norbornadiene, stabilized appears as a colorless liquid. Insoluble in water and less dense than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. When heated will polymerize and at decomposition emits acrid smoke and irritating fumes.
Air & Water Reactions
Highly flammable. Insoluble in water.
Reactivity Profile
2,5-NORBORNADIENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions. Violent explosions at low temperatures in ammonia synthesis gas units have been traced to the addition products of dienes and nitrogen dioxide [Bretherick, 5th Ed., 1995].
Health Hazard
Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Safety Profile
Poison by intravenous route. Moderately toxic by ingestion and intraperitoneal routes. Mildly toxic by inhalation. A flammable liquid. When heated to decomposition it emits acrid smoke and irritating fumes.
Purification Methods
Purify the diene by distillation from activated alumina [Landis & Halpern J Am Chem Soc 109 1746 1987]. [Beilstein 5 IV 879.]
2,5-Norbornadiene Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531157085 | abby@chuanghaibio.com | China | 8808 | 58 |
| Hebei Mujin Biotechnology Co.,Ltd | +86 13288715578 +8613288715578 | sales@hbmojin.com | China | 12809 | 58 |
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 20234 | 58 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-371-+86-371-66670886 | info@dakenam.com | China | 19805 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21628 | 55 |
| Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 | jack.li@time-chemicals.com | China | 1803 | 55 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29858 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28172 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 | linda@hubeijusheng.com | CHINA | 22963 | 58 |
| Shandong chuangyingchemical Co., Ltd. | 18853181302 | sale@chuangyingchem.com | CHINA | 5906 | 58 |
View Lastest Price from 2,5-Norbornadiene manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-04-23 | 2,5-Norbornadiene
121-46-0
|
US $10.00 / KG | 1KG | 99% | 10 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-03-21 | 2,5-Norbornadiene
121-46-0
|
US $0.00 / KG | 1KG | 99% | 50000KG/month | Hebei Mujin Biotechnology Co.,Ltd | |
 |
2023-12-26 | 2,5-Norbornadiene
121-46-0
|
US $100.00-1.00 / KG | 1KG | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd |
-
- 2,5-Norbornadiene
121-46-0
- US $10.00 / KG
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- 2,5-Norbornadiene
121-46-0
- US $0.00 / KG
- 99%
- Hebei Mujin Biotechnology Co.,Ltd
-
- 2,5-Norbornadiene
121-46-0
- US $100.00-1.00 / KG
- 99%
- Henan Fengda Chemical Co., Ltd
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