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CAS RN: 110-87-2 | Product Number: D0555

3,4-Dihydro-2H-pyran


Purity: >97.0%(GC)
Synonyms:
  • DHP
Documents:
25ML
$18.00
≥20  ≥20 
100ML
$32.00
≥20  ≥20 
500ML
$101.00
16   ≥20 

* Please contact our distributors or TCI to order our products. The above prices do not include freight cost, customs, and other charges to the destination.
* The storage conditions are subject to change without notice.


Product Number D0555
Purity / Analysis Method >97.0%(GC)
Molecular Formula / Molecular Weight C__5H__8O = 84.12  
Physical State (20 deg.C) Liquid
CAS RN 110-87-2
Reaxys Registry Number 103493
PubChem Substance ID 87567211
SDBS (AIST Spectral DB) 2119
MDL Number

MFCD00006558

Specifications
Appearance Colorless to Light yellow clear liquid
Purity(GC) min. 97.0 %
Properties (reference)
Boiling Point 86 °C
Flash point -6 °C
Specific Gravity (20/20) 0.93
Refractive Index 1.44
GHS
Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
H225 : Highly flammable liquid and vapor.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P240 : Ground/bond container and receiving equipment.
P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233 : Keep container tightly closed.
P243 : Take precautionary measures against static discharge.
P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment.
P242 : Use only non-sparking tools.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
P403 + P235 : Store in a well-ventilated place. Keep cool.
Related Laws:
Transport Information:
UN Number UN2376
Class 3
Packing Group II
H.S.code* 2932.99-000
*This code is applied to the products when TCI exports from Japan and not for import in your country.
Application
THP Protection of Alcohols

Typical Procedure :THP protection of (R)-(+)-glycidol
(R = (R)-(+)-glycidyl) : Pyridinium p-toluenesulfonate (PPTS) (1.00 g, 4.05 mmol) and 3,4-dihydro-2H-pyran (11.3 mL, 121.5 mmol) are added to a stirred solution of (R)-(+)-glycidol (6.00 g, 80.99 mmol) in dichloromethane (80 mL) at 0 °C under argon atmosphere. After 6 h, aqueous NaHCO3 solution (60 mL) is added and the layers are separated. The aqueous layer is extracted with dichloromethane (3x50 mL). Combined organic layer is dried over MgSO4, filtered, and concentrated in vacuo. The crude mixture is purified by column chromatography (EtOAc:hexane = 1:5) to give the desired product (9.22 g, 72%).

References


PubMed Literature


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