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3,4-Dihydro-2H-pyran(CAS No. 110-87-2)

3,4-Dihydro-2H-pyran C5H8O (cas 110-87-2) Molecular Structure

110-87-2 Structure

Identification and Related Records

【Name】
3,4-Dihydro-2H-pyran
【CAS Registry number】
110-87-2
【Synonyms】
5,6-Dihydro-4H-pyran
DHP
DIHYDROPYRANE
2,3-Dihydropyran
3,4-Dihydropyran
2H-3,4-Dihydropyran
2H-Pyran,3,4-dihydro-
3,4-Dihdro-2H-pyrane
3,4-dihydro-2h-pyra
3,4-Dihydro-2-pyran
delta(Sup2)-Dihydropyran
delta2-Dihydropyran
Pyran, dihydro-
【EINECS(EC#)】
203-810-4
【Molecular Formula】
C5H8O (Products with the same molecular formula)
【Molecular Weight】
84.12
【Inchi】
InChI=1/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2
【InChIKey】
BUDQDWGNQVEFAC-UHFFFAOYSA-N
【Canonical SMILES】
C1CC=COC1
【MOL File】
110-87-2.mol

Chemical and Physical Properties

【Appearance】
Colorless liquid
【Density】
0.922
【Melting Point】
-70℃
【Boiling Point】
86℃
【Vapour】
74.4mmHg at 25°C
【Refractive Index】
1.4405-1.4425
【Flash Point】
-9℃
【Water】
20 g/L (20℃)
【Solubilities】
20 g/L (20 oC)
【Stability】
Stable under normal temperatures and pressures.
【HS Code】
29329995
【Storage temp】
Flammables area
【Computed Properties】
Molecular Weight:84.11642 [g/mol]
Molecular Formula:C5H8O
XLogP3:0.7
H-Bond Donor:0
H-Bond Acceptor:1
Rotatable Bond Count:0
Exact Mass:84.057515
MonoIsotopic Mass:84.057515
Topological Polar Surface Area:9.2
Heavy Atom Count:6
Formal Charge:0
Complexity:57
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0
Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:0
Covalently-Bonded Unit Count:1
Feature 3D Acceptor Count:1
Feature 3D Ring Count:1
Effective Rotor Count:0.8
Conformer Sampling RMSD:0.4
CID Conformer Count:1

Safety and Handling

【Hazard Codes】
F:Flammable
【Risk Statements】
R11;R36/38
【Safety Statements 】
S16;S26;S37/39
【HazardClass】
3
【Hazard Note】

Highly Flammable/Irritant

【Safety】

Hazard Codes:?FlammableF,?IrritantXi
Risk Statements: 11-36/37/38-36/38-19?
R11:Highly flammable.?
R36/37/38:Irritating to eyes, respiratory system and skin.?
R36/38:Irritating to eyes and skin.?
R19:May form explosive peroxides.
Safety Statements: 16-26-36-37/39-33-7/9?
S16:Keep away from sources of ignition.?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S36:Wear suitable protective clothing.?
S37/39:Wear suitable gloves and eye/face protection.?
S33:Take precautionary measures against static discharges.?
S7:Keep container tightly closed.?
S9:Keep container in a well-ventilated place.
RIDADR: UN 2376 3/PG 2
WGK Germany: 3
Hazard Note: Highly Flammable/Irritant
HazardClass: 3
PackingGroup: II
HS Code: 29329995
A flammable and very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing 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 fumes.

【PackingGroup 】
II
【Transport】
UN 2376
【Specification】

?Dihydropyran (CAS NO.110-87-2) is also named as 2,3-Dihydro-4H-pyran ; 2H-3,4-Dihydropyran ; 3,4-Dihydro-2H-pyran ; 3,4-Dihydropyran ; 5,6-Dihydro-4H-pyran ; AI3-16497 ; Dihydropyran (VAN) ; NSC 57860 ; delta2-Dihydropyran .?Dihydropyran (CAS NO.110-87-2) is colorless to light yellow liquid. It is soluble in most organic solvents.

【Report】

Reported in EPA TSCA Inventory.

Use and Manufacturing

【Usage】

This cyclic ether is used to protect alcohols in organic synthesis.

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