Merck
All Photos(3)

186562

Sigma-Aldrich

四氢呋喃

anhydrous, contains 250 ppm BHT as inhibitor, ≥99.9%

Synonym(s):
THF, 环氧丁烷, 环氧丙烷, 四氢呋喃
Empirical Formula (Hill Notation):
C4H8O
CAS Number:
Molecular Weight:
72.11
Beilstein:
102391
EC 号:
MDL编号:
PubChem化学物质编号:
NACRES:
NA.21

质量水平

200

等级

anhydrous

蒸汽密度

2.5 (vs air)

蒸汽压

114 mmHg ( 15 °C)
143 mmHg ( 20 °C)

测定

≥99.9%

形式

liquid

自燃温度

610 °F

包含

250 ppm BHT as inhibitor

expl. lim.

1.8-11.8 %

杂质

≤0.005% peroxides (as H2O2)
<0.002% water (All units except 100 mL)
<0.005% water (100 mL pkg)

折射率

n20/D 1.407 (lit.)

pH值(酸碱度)

~7

bp

65-67 °C (lit.)

mp

−108 °C (lit.)

溶解性

H2O: soluble

密度

0.889 g/mL at 25 °C (lit.)

SMILES string

C1CCOC1

InChI

1S/C4H8O/c1-2-4-5-3-1/h1-4H2

InChI key

WYURNTSHIVDZCO-UHFFFAOYSA-N

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一般描述

四氢呋喃(THF)是一种饱和环醚,主要用作有机溶剂。长期储存时,它会形成有机过氧化物。可通过添加丁基羟基甲苯(BHT)作为稳定剂而抑制这一过程。BHT能去除形成过氧化物所需的自由基。它是各种天然产物(聚醚类抗生素)的关键片段。THF可与硫化氢形成双水合物,其晶体结构已经过三维单晶研究法进行过研究。

应用

干燥四氢呋喃(THF)已用于合成二氯{双[1,1′,1′′-(膦三基)三哌啶]钯[(P(NC5H10)3)2Pd(Cl)2],广泛用作Heck反应中的催化剂。它已被用于各种芳基溴和烯烃的Heck交叉偶联反应介质。

包装

50, 200 L in Pure-Pac™ 2
1, 6×1, 2, 4×2 L in Sure/Seal™
208 L in steel drum
100, 12×100 mL in Sure/Seal™
18 L in Pure-Pac™ 1

其他说明

2-甲基四氢呋喃(414247)和环戊基甲基醚(675970)是许多THF应用更环保的替代选择。

警示用语:

Danger

危险分类

Acute Tox. 4 Oral - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 2

补充剂危害

储存分类代码

3 - Flammable liquids

WGK

WGK 1

闪点(F)

-6.2 °F - closed cup

闪点(C)

-21.2 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Certificate of Analysis

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Certificate of Origin

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