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| CAS No.: | 103-75-3 |
|---|---|
| Name: | 2-ETHOXY-3,4-DIHYDRO-2H-PYRAN |
| Article Data: | 10 |
| Molecular Structure: | |
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| Formula: | C7H12O2 |
| Molecular Weight: | 128.171 |
| Synonyms: | 2-Ethoxy-2,3-dihydro-4H-pyran;2-Ethoxy-2,3-dihydro-g-pyran;2-Ethoxy-3,4-dihydro-2H-pyran;2-Ethoxy-3,4-dihydropyran;3,4-Dihydro-2-ethoxy-2H-pyran;3,4-Dihydro-2-ethoxypyran;3,4-Dihydro-2H-pyran-2-yl ethyl ether;NSC 6271; |
| EINECS: | 203-141-8 |
| Density: | 0.96 g/cm3 |
| Melting Point: | 153-155 °C |
| Boiling Point: | 144.8 °C at 760 mmHg |
| Flash Point: | 24.4 °C |
| Appearance: | colorless liquid |
| Hazard Symbols: |
 Xi
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| Risk Codes: | 10-36/38 |
| Safety: | 26 |
| Transport Information: | UN 3271 |
| PSA: | 18.46000 |
| LogP: | 1.67310 |
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Specification
The IUPAC name of 2-Ethoxydihydropyran is 2-ethoxy-3,4-dihydro-2H-pyran. With the CAS registry number 103-75-3, it is also named as 2H-Pyran, 2-ethoxy-3,4-dihydro-. The product's categories are Alphabetic; D; DID-DIN, and the other registry number is 126753-01-3. Besides, it is colorless liquid, which should be stored in sealed, dark, ventilated and dry place at 2-8 °C. In addition, its molecular formula is C7H12O2 and molecular weight is 128.17.
The other characteristics of this product can be summarized as: (1)EINECS: 203-141-8; (2)ACD/LogP: 0.44; (3)# of Rule of 5 Violations: 0; (4)ACD/LogD (pH 5.5): 0.44; (5)ACD/LogD (pH 7.4): 0.44; (6)ACD/BCF (pH 5.5): 1.26; (7)ACD/BCF (pH 7.4): 1.26; (8)ACD/KOC (pH 5.5): 41.13; (9)ACD/KOC (pH 7.4): 41.13; (10)#H bond acceptors: 2; (11)#H bond donors: 0; (12)#Freely Rotating Bonds: 2 ; (13)Index of Refraction: 1.453; (14)Molar Refractivity: 35.77 cm3; (15)Molar Volume: 132.2 cm3; (16)Surface Tension: 29 dyne/cm; (17)Density: 0.96 g/cm3; (18)Flash Point: 24.4 °C; (19)Enthalpy of Vaporization: 36.61 kJ/mol; (20)Boiling Point: 144.8 °C at 760 mmHg; (21)Vapour Pressure: 6.32 mmHg at 25 °C.
Uses of 2-Ethoxydihydropyran: this chemical is used in organic synthesis. Similarly, it can react with Ethanol to get 1,1,5,5-Tetraethoxy-pentane.
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This reaction needs HCl at temperature of -10 °C. The yield is 89 %.
When you are using this chemical, please be cautious about it as the following: it is flammable. And it is also irritating to eyes and skin. In case of contact with eyes, please rinse immediately with plenty of water and seek medical advice.
People can use the following data to convert to the molecule structure.
(1)SMILES: O(CC)C1O\C=C/CC1
(2)InChI: InChI=1/C7H12O2/c1-2-8-7-5-3-4-6-9-7/h4,6-7H,2-3,5H2,1H3
(3)InChIKey: VZJFPIXCMVSTID-UHFFFAOYAC
(4)Std. InChI: InChI=1S/C7H12O2/c1-2-8-7-5-3-4-6-9-7/h4,6-7H,2-3,5H2,1H3
(5)Std. InChIKey: VZJFPIXCMVSTID-UHFFFAOYSA-N
The toxicity data is as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rabbit | LD50 | skin | 3560uL/kg (3.56mL/kg) | Union Carbide Data Sheet. Vol. 7/15/1971, | |
| rat | LCLo | inhalation | 8000ppm/4H (8000ppm) | American Industrial Hygiene Association Journal. Vol. 23, Pg. 95, 1962. | |
| rat | LD50 | oral | 6160mg/kg (6160mg/kg) | Union Carbide Data Sheet. Vol. 7/15/1971, |