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

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