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180734

Sigma-Aldrich

3,4-Dihydro-2-methoxy-2H-pyran

99%

Synonym(s):

2-Methoxy-3,4-dihydro-2H-pyran

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About This Item

Empirical Formula (Hill Notation):
C6H10O2
CAS Number:
4454-05-1
Molecular Weight:
114.14
Beilstein:
107274
EC Number:
224-698-3
MDL number:
MFCD00006560
UNSPSC Code:
12352100
PubChem Substance ID:
24850892

Assay

99%

refractive index

n20/D 1.442 (lit.)

density

1.006 g/mL at 25 °C (lit.)

SMILES string

COC1CCC=CO1

InChI

1S/C6H10O2/c1-7-6-4-2-3-5-8-6/h3,5-6H,2,4H2,1H3

InChI key

XCYWUZHUTJDTGS-UHFFFAOYSA-N

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Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Warning

Hazard Statements

H226,H302 + H332,H319

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

78.8 °F - closed cup

Flash Point(C)

26 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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The acute toxicity of methoxydihydropyran.
D E Dodd et al.
Veterinary and human toxicology, 30(6), 545-550 (1988-12-01)
B Ballantyne et al.
Human toxicology, 8(3), 229-235 (1989-05-01)
1. The LC50 values for acrolein (AC) vapour to Sprague-Dawley rats (combined sexes) were determined to be 26 ppm (1 h) and 8.3 ppm (4 h). Signs of severe irritancy were present, and death was due to lung injury. 2.

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