ChemicalBook > CAS DataBase List > 3,4-Dihydro-2H-pyran

3,4-Dihydro-2H-pyran

Product Name
3,4-Dihydro-2H-pyran
CAS No.
110-87-2
Chemical Name
3,4-Dihydro-2H-pyran
Synonyms
DHP;DIHYDROPYRAN;3,4-DIHYDROPYRAN;DIHYDROPYRANE;Pyran, dihydro-;dihydro-2H-pyran;3,4-Dihydro-2-pyran;3,4-dihydro-2h-pyra;2,3-DIHYDRO-4H-PYRAN;3,4-Dihydro-2H-pyrane
CBNumber
CB5324066
Molecular Formula
C5H8O
Formula Weight
84.12
MOL File
110-87-2.mol
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3,4-Dihydro-2H-pyran Property

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)
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Safety

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
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H225Highly Flammable liquid and vapour

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
D106208
Product name
3,4-Dihydro-2H-pyran
Purity
97%
Packaging
100ml
Price
$35.6
Updated
2024/03/01
Sigma-Aldrich
Product number
D106208
Product name
3,4-Dihydro-2H-pyran
Purity
97%
Packaging
500ml
Price
$121
Updated
2024/03/01
Sigma-Aldrich
Product number
8.02971
Product name
3,4-Dihydro-2H-pyran
Purity
for synthesis
Packaging
100mL
Price
$39.4
Updated
2024/03/01
Sigma-Aldrich
Product number
8.02971
Product name
3,4-Dihydro-2H-pyran
Purity
for synthesis
Packaging
250ML
Price
$84
Updated
2024/03/01
TCI Chemical
Product number
D0555
Product name
3,4-Dihydro-2H-pyran
Purity
>97.0%(GC)
Packaging
25mL
Price
$21
Updated
2024/03/01
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3,4-Dihydro-2H-pyran Chemical Properties,Usage,Production

Chemical Properties

colorless to light yellow liqui

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.

Flammability and Explosibility

Flammable

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

Tetrahydrofurfuryl alcohol

Preparation Products

Glutaraldehyde 2-[(5-NITRO-2-FURYL)METHOXY]TETRAHYDRO-2H-PYRAN 4-CHLORO-2-(TETRAHYDRO-2H-PYRAN-2-YL)-5-HYDROXYPYRIDAZIN-3(2H)-ONE Pyrazole-3-boronic acid
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3,4-Dihydro-2H-pyran Suppliers

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

Hebei Weibang Biotechnology Co., Ltd
Product
3,4-Dihydro-2H-pyran 110-87-2
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2024-10-28
Hebei Yanxi Chemical Co., Ltd.
Product
3,4-Dihydro-2H-pyran 110-87-2
Price
US $10.00-1.00/kg
Min. Order
1kg
Purity
0.99
Supply Ability
10 tons
Release date
2023-09-12
Hebei Chuanghai Biotechnology Co,.LTD
Product
3,4-Dihydro-2H-pyran 110-87-2
Price
US $10.00/KG
Min. Order
1KG
Purity
99.%
Supply Ability
10 ton
Release date
2024-08-23

110-87-2, 3,4-Dihydro-2H-pyranRelated Search:

Centchroman Ammonium dihydrogen phosphate Dipotassium hydrogen phosphate trihydrate Aluminum dihydrogen phosphate Boron nitride Sodium phosphate dibasic dodecahydrate Tetrahydro-4H-pyran-4-one Geniposide Oleuropein 2-ETHOXY-3,4-DIHYDROPYRAN Harpagoside VERBENALIN PICROSIDE I Picroside II LOGANIC ACID 3,4-DIHYDRO-2-METHOXY-2H-PYRAN CITRININ sodium 3,4-dihydro-2H-pyran-2-carboxylate

  • 3,4-dihydro-2h-pyra
  • 3,4-Dihydro-2-pyran
  • delta(Sup2)-Dihydropyran
  • delta2-Dihydropyran
  • Pyran, dihydro-
  • pyran,dihydro-
  • δ2-dihydropyran
  • DIHYDROPYRAN
  • DHP
  • 5,6-DIHYDRO-4H-PYRAN
  • 3,4-DIHYDRO-2ETA-PYRAN
  • 2,3-DIHYDRO-4H-PYRAN
  • 3,4-DIHYDRO-2H-PYRAN
  • 3,4-DIHYDROPYRAN
  • DIHYDROPYRANE
  • dihydro-2H-pyran
  • 3,4-Dihydro-2H-pyrane
  • 3,4-Dihydro-2H-pyran,99%
  • 2,3-Dihydro-2H-pyran
  • 2,3-Dihydropyran, DHP
  • 3,4-Dihydro-2H-pyran ,98%
  • 3,4-Dihydro-2H-pyran, 99% 100GR
  • 3,4-Dihydro-2H-pyran, 99% 500GR
  • 3,4-Dihydro-2H-pyran (DHP)
  • Dihydropyran,3,4-Dihydro-2H-pyran
  • 3,4-DIHYDRO-2H-PYRAN FOR SYNTHESIS
  • Dihydropyran/DHP
  • 3,4-Dihydro-2<i>H</i>-pyran
  • 2H-3,4-Dihydropyran
  • 2H-Pyran,3,4-dihydro-
  • 3,4-Dihdro-2H-pyrane
  • 3,4-DIHYDRO-2H-PYRAN, 97%3,4-DIHYDRO-2H-PYRAN, 97%3,4-DIHYDRO-2H-PYRAN, 97%3,4-DIHYDRO-2H-PYRAN, 97%
  • 3,4-Dihydro-2H-pyran &gt
  • 3,4-Dihydro-2H-pyran ISO 9001：2015 REACH
  • 3,4-Dihydro-2H-pyran (3,4-DHP) pure, 98%
  • 3,4-Dihydro-2H-Pyan
  • 3,4-Dihydro-2H-pyran, ≥ 96.0%
  • 110-87-2
  • Others
  • Protection and Derivatization
  • Protecting and Derivatizing Reagents
  • Synthetic Reagents
  • Protection & Derivatization Reagents (for Synthesis)
  • Halogenated Heterocycles ,Isoquinolines ,Quinolines ,Quinazolines ,Quinaldines
  • Protection and Derivatization
  • Others
  • Protecting and Derivatizing Reagents
  • Protection & Derivatization Reagents (for Synthesis)
  • Synthetic Organic Chemistry
  • Oxygen cyclic compounds