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103-75-3

Basic Information
CAS No.: 103-75-3
Name: 2H-Pyran,2-ethoxy-3,4-dihydro-
Article Data: 10
Cas Database
Molecular Structure:
Molecular Structure of 103-75-3 (2H-Pyran,2-ethoxy-3,4-dihydro-)
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
Solubility: N/A
Appearance: colorless liquid
Hazard Symbols: IrritantXi
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.



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,