3,4-Dihydro-2H-pyran
- CAS No.
- 110-87-2
- Chemical Name:
- 3,4-Dihydro-2H-pyran
- Synonyms
- DHP;DIHYDROPYRAN;3,4-DIHYDROPYRAN;DIHYDROPYRANE;Pyran, dihydro-;dihydro-2H-pyran;3,4-dihydro-2h-pyra;3,4-Dihydro-2-pyran;2,3-DIHYDRO-4H-PYRAN;3,4-Dihydro-2H-pyrane
- CBNumber:
- CB5324066
- Molecular Formula:
- C5H8O
- Molecular Weight:
- 84.12
- MOL File:
- 110-87-2.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/8/24 19:19:26
| Melting point | -70 °C (lit.) |
|---|---|
| Boiling point | 86 °C (lit.) |
| Density | 0.922 g/mL at 25 °C (lit.) |
| vapor density | 2.9 (vs air) |
| vapor pressure | 77.8 hPa (20 °C) |
| refractive index |
n |
| Flash point | 4 °F |
| storage temp. | Store below +30°C. |
| solubility | 7.7g/l |
| form | Liquid |
| color | Clear colorless to yellow |
| PH | 7 (5g/l, H2O, 20℃) |
| explosive limit | 1.1-13.8%(V) |
| Water Solubility | 20 g/L (20 ºC) |
| BRN | 103493 |
| Stability | Volatile |
| InChIKey | BUDQDWGNQVEFAC-UHFFFAOYSA-N |
| LogP | 0.690 |
| CAS DataBase Reference | 110-87-2(CAS DataBase Reference) |
| NIST Chemistry Reference | 2H-Pyran, 3,4-dihydro-(110-87-2) |
| EPA Substance Registry System | 2H-Pyran, 3,4-dihydro- (110-87-2) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H315-H317-H319-H412 | |||||||||
| Precautionary statements | P210-P233-P273-P280-P303+P361+P353-P305+P351+P338 | |||||||||
| Hazard Codes | F,Xi | |||||||||
| Risk Statements | 11-36/37/38-36/38-19 | |||||||||
| Safety Statements | 16-26-36-37/39-33-7/9 | |||||||||
| RIDADR | UN 2376 3/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | UP7700000 | |||||||||
| Autoignition Temperature | 240 °C | |||||||||
| Hazard Note | Highly Flammable/Irritant | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29329995 | |||||||||
| Toxicity | LD50 orally in Rabbit: > 4000 mg/kg | |||||||||
| NFPA 704 |
|
3,4-Dihydro-2H-pyran price More Price(15)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | D106208 | 3,4-Dihydro-2H-pyran 97% | 110-87-2 | 100ML | ₹2706.25 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | D106208 | 3,4-Dihydro-2H-pyran 97% | 110-87-2 | 500ML | ₹10294.58 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.02971 | 3,4-Dihydro-2H-pyran for synthesis | 110-87-2 | 100ML | ₹3210 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.02971 | 3,4-Dihydro-2H-pyran for synthesis | 110-87-2 | 250ML | ₹4790 | 2022-06-14 | Buy |
| TCI Chemicals (India) | D0555 | 3,4-Dihydro-2H-pyran min. 97.0 % | 110-87-2 | 25ML | ₹2100 | 2022-05-26 | Buy |
3,4-Dihydro-2H-pyran Chemical Properties,Uses,Production
Chemical Properties
colorless to light yellow liqui
Uses
Widely used hydroxyl-protecting reagent3,4-Dihydro-2H-pyran is used as a hydroxyl-protecting reagent in organic synthesis. It acts as an intermediate in synthetic chemistry. It is used to protect various reactive functional groups. It is involved in the polymerization reaction either alone or with unsaturated compound and finds application in polymer industries. Further, it is employed in the preparation of bicyclic compounds of epoxide-fused, halo compounds and allenic alcohols.
Safety Profile
A flammable and very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidzing materials. Keep away from heat and open flame. To fight fire, use alcohol foam, CO2, or dry chemical. When heated to decomposition it emits acrid smoke and irritating
Purification Methods
Partially dry dihydropyran with Na2CO3, then fractionally distil it. The fraction b 84-85o is refluxed with Na until hydrogen no longer evolves when fresh Na is added. It is then dried, and distilled again through a 60 x 1.2cm column packed with glass rings [Brandon et al. J Am Chem Soc 72 2120 1950, UV: Elington et al. J Chem Soc 2873 1952, NMR: Bushweller & O'Neil Tetrahedron Lett 4713 1969]. It has been characterised as the 3,5-dinitrobenzoyloxy-tetrahydrofuran derivative, m 103o which forms pale yellow crystals from dihydropyran/Et2O [Woods & Kramer J Am Chem Soc 69 2246 1947]. [Beilstein 17/1 V 181.]
3,4-Dihydro-2H-pyran Preparation Products And Raw materials
Raw materials
Preparation Products
1of3
chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| ALMELO PRIVATE LIMITED | +91-9100991345 +91-8500807769 | Telangana, India | 114 | 58 | Inquiry |
| Vardhaman P Golechha | 9704422000 | Telangana, India | 294 | 58 | Inquiry |
| JSK Chemicals | +919879767970 | Gujarat, India | 3756 | 58 | Inquiry |
| PERFECT CHEMICAL | +91-9820465461 +91-9820465461 | Mumbai, India | 391 | 58 | Inquiry |
| BASF India Limited | +91-2262785600 +91-2262785600 | Maharashtra, India | 209 | 58 | Inquiry |
| Aether Industries Limited | +91-261-6603130 +91-2616603130 | Gujarat, India | 145 | 58 | Inquiry |
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Triveni chemicals | 08048762458 | New Delhi, India | 6093 | 58 | Inquiry |
| LOBA CHEMIE PVT.LTD. | 91-22-6663 6699 | Mumbai, India | 3077 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| ALMELO PRIVATE LIMITED | 58 |
| Vardhaman P Golechha | 58 |
| JSK Chemicals | 58 |
| PERFECT CHEMICAL | 58 |
| BASF India Limited | 58 |
| Aether Industries Limited | 58 |
| TCI Chemicals (India) Pvt. Ltd. | 58 |
| Otto Chemie Pvt. Ltd. | 58 |
| Triveni chemicals | 58 |
| LOBA CHEMIE PVT.LTD. | 58 |
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