3,4-Dihydro-2H-pyran , 98% , 110-87-2

Synonym(s):
3,4-Dihydro-2H-pyran

CAS NO.：110-87-2

Empirical Formula: C5H8O

Molecular Weight: 84.12

MDL number: MFCD00006558

EINECS: 203-810-4

PRODUCT Properties

• Melting point: -70 °C (lit.)
• Boiling point: 86 °C (lit.)
• Density: 0.922 g/mL at 25 °C (lit.)
• vapor density: 2.9 (vs air)
• vapor pressure: 77.8 hPa (20 °C)
• refractive index: n20/D 1.440(lit.)
• Flash point: 4 °F
• storage temp.: Store below +30°C.
• solubility: 7.7g/l
• form: Liquid
• color: Clear colorless to yellow
• PH: 7 (5g/l, H2O, 20℃)
• explosive limit: 1.1-13.8%(V)
• Water Solubility: 20 g/L (20 ºC)
• BRN: 103493
• Stability: Volatile
• InChIKey: BUDQDWGNQVEFAC-UHFFFAOYSA-N
• LogP: 0.690
• CAS DataBase Reference: 110-87-2(CAS DataBase Reference)
• NIST Chemistry Reference: 2H-Pyran, 3,4-dihydro-(110-87-2)
• EPA Substance Registry System: 2H-Pyran, 3,4-dihydro- (110-87-2)

Description and Uses

Widely used hydroxyl-protecting reagent3,4-Dihydro-2H-pyran is used as a hydroxyl-protecting reagent in organic synthesis. It acts as an intermediate in synthetic chemistry. It is used to protect various reactive functional groups. It is involved in the polymerization reaction either alone or with unsaturated compound and finds application in polymer industries. Further, it is employed in the preparation of bicyclic compounds of epoxide-fused, halo compounds and allenic alcohols.

Safety

• Symbol(GHS): GHS02,GHS07
• Signal word: Danger
• Hazard statements: H225-H315-H317-H319-H412
• Precautionary statements: P210-P233-P273-P280-P303+P361+P353-P305+P351+P338
• Hazard Codes: F,Xi
• Risk Statements: 11-36/37/38-36/38-19
• Safety Statements: 16-26-36-37/39-33-7/9
• RIDADR: UN 2376 3/PG 2
• WGK Germany: 3
• RTECS: UP7700000
• Autoignition Temperature: 240 °C
• Hazard Note: Highly Flammable/Irritant
• TSCA: Yes
• HazardClass: 3
• PackingGroup: II
• HS Code: 29329995
• Toxicity: LD50 orally in Rabbit: > 4000 mg/kg