应用
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.

备注
Incompatible with oxidizing agents, strong acids and alcohols.

基本信息

MDL
MFCD00006558

EINECS
203-810-4

分子式
C₅H₈O

分子量
84.12

熔点
-70°

沸点
85-86°

闪点
-15°(5°F)

密度
0.926

折射率
1.4420

灵敏度
Ambient temperatures.

形态
Liquid

溶解性
Miscible with water and chloroform.

Beilstein
103493

GHS危害和防范说明

GHS符号

Hazard Statements
H225-H315-H319-H335
Highly flammable liquid and vapour.Causes skin irritation.Causes serious eye irritation.May cause respiratory irritation.

Precautionary Statements
P210-P261-P280g-P305+P351+P338-P403+P233
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.Avoid breathing dust/fume/gas/mist/vapours/spray.Wear protective gloves.IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.Store in a well-ventilated place. Keep container tightly closed.

安全信息

危险等级
3

包装组
II

危险类别
11-36/37/38
Highly flammable.Irritating to eyes, respiratory system and skin.

安全等级
7/9-16-23-26-37
Keep container tightly closed and in a well-ventilated place.Keep away from sources of ignition - No smoking.Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer).In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

欧盟危险品标志

TSCA
是