3,4-Dihydro-2H-pyran CAS 110-87-2

Product Description:

Product Name: 3,4-Dihydro-2H-pyran CAS NO: 110-87-2

Synonyms:

3,4-2H-dihydropyran;

2H-Pyran, 3,4-dihydro-;

2,3-dihydropyran;

Chemical & Physical Properties:

Appearance: Colorless liquid

Assay :≥99.00%

Density: 0.922

Boiling Point: 86℃

Melting Point: -70℃

Flash Point: -9℃

Refractive Index: 1.4405-1.4425

Water Solubility: 20 g/L (20 ℃)

Stability: Stable under normal temperatures and pressures.

Storage Condition: Flammables area

Vapor Density: 2.9 (vs air)

Vapor Pressure: 74.4mmHg at 25℃

Safety Information:

Hazard Class: 3

Safety Statements: S16-S26-S37/39

HS Code: 29329995

Packing Group: II

WGK Germany: 3

RIDADR: UN 2376

Risk Statements: R11; R36/38

Hazard Codes: F,Xi

Symbols: GHS02, GHS07

Caution Statements: P210; P261; P305 + P351 + P338

Hazard Declaration: H225; H315; H319; H335

Signal Word: Danger

Dihydropyran is a heterocyclic compound with the formula C5H8O. The six-membered, non-aromatic ring has five carbon atoms and one oxygen atom. It contains one double bond. There are two isomers of dihydropyran that differ by the location of the double bond. 3,4-Dihydro-2H-pyran has a double bond at position 5; 3,6-dihydro-2H-pyran has the double bond at position 4. Widely used in OH protection reagents. The chemical properties of dihydropyran are active. Tetrahydropyran, pentanediol, glutaric acid, valerolactone, pentadiene and resin products can be prepared through polymerization, hydrogenation, oxidation and other reactions.

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