Chinese Japanese Germany Korea


3,4-Dihydro-2H-pyran structure
Chemical Name:
DHP;DIHYDROPYRAN;DIHYDROPYRANE;pyran,dihydro-;Pyran, dihydro-;δ2-dihydropyran;3,4-DIHYDROPYRAN;dihydro-2H-pyran;Dihydropyran/DHP;3,4-Dihydro-2-pyran
Molecular Formula:
Formula Weight:
MOL File:

3,4-Dihydro-2H-pyran Properties

Melting point:
−70 °C(lit.)
Boiling point:
86 °C(lit.)
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. 
Flammables area
Clear colorless to yellow
7 (5g/l, H2O, 20℃)
explosive limit
Water Solubility 
20 g/L (20 ºC)
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)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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
HazardClass  3
PackingGroup  II
HS Code  29329995
Toxicity LD50 orally in Rabbit: > 4000 mg/kg
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to..…

3,4-Dihydro-2H-pyran price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich D106208 3,4-Dihydro-2H-pyran 97% 110-87-2 100ml $27 2018-11-13 Buy
Sigma-Aldrich D106208 3,4-Dihydro-2H-pyran 97% 110-87-2 500ml $111 2018-11-13 Buy
TCI Chemical D0555 3,4-Dihydro-2H-pyran >97.0%(GC) 110-87-2 25mL $12 2018-11-22 Buy
TCI Chemical D0555 3,4-Dihydro-2H-pyran >97.0%(GC) 110-87-2 100mL $26 2018-11-22 Buy
Alfa Aesar L02731 3,4-Dihydro-2H-pyran, 99% 110-87-2 25ml $20 2018-11-13 Buy

3,4-Dihydro-2H-pyran Chemical Properties,Uses,Production

Chemical Properties

colorless to light yellow liqui

Safety Profile

A flammable and very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidzing materials. Keep away from heat and open flame. To fight fire, use alcohol foam, CO2, or dry chemical. When heated to decomposition it emits acrid smoke and irritating

Purification Methods

Partially dry dihydropyran with Na2CO3, then fractionally distil it. The fraction b 84-85o is refluxed with Na until hydrogen no longer evolves when fresh Na is added. It is then dried, and distilled again through a 60 x 1.2cm column packed with glass rings [Brandon et al. J Am Chem Soc 72 2120 1950, UV: Elington et al. J Chem Soc 2873 1952, NMR: Bushweller & O'Neil Tetrahedron Lett 4713 1969]. It has been characterised as the 3,5-dinitrobenzoyloxy-tetrahydrofuran derivative, m 103o which forms pale yellow crystals from dihydropyran/Et2O [Woods & Kramer J Am Chem Soc 69 2246 1947]. [Beilstein 17/1 V 181.]

3,4-Dihydro-2H-pyran Preparation Products And Raw materials

Raw materials

Preparation Products

3,4-Dihydro-2H-pyran Suppliers

Global( 312)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555 CHINA 1374 55
Shanghai Yingrui Biopharma Co., Ltd.
+86-21-34979012 CHINA 663 60
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 China 19953 60
Shenzhen Sendi Biotechnology Co.Ltd.
0755-23311925 18102838259
0755-23311925 CHINA 3217 55
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22043 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20786 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32651 55
Jiangsu Qingquan Chemical Co., Ltd.
+86-571-86589381/86589382/86589383 CHINA 177 55
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20229 58
career henan chemical co
+86-371-86658258 CHINA 19997 58

View Lastest Price from 3,4-Dihydro-2H-pyran manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-17 3,4-Dihydro-2H-pyran
US $8.00 / kg 1kg 99% 10MT career henan chemical co

3,4-Dihydro-2H-pyran Spectrum

110-87-2(3,4-Dihydro-2H-pyran)Related Search:

Copyright 2017 © ChemicalBook. All rights reserved