3,4-Dihydro-2H-Pyran (DHP) CAS 110-87-2 Purity >99.0% (GC)

Short Description:

Chemical Name: 3,4-Dihydro-2H-Pyran

Synonyms: DHP; Dihydropyran 

CAS: 110-87-2

Purity: >99.0% (GC)

Appearance: Colorless Clear Liquid

Used as a Hydroxyl-Protecting Reagent in Organic Synthesis

Contact: Dr. Alvin Huang

Mobile/Wechat/WhatsApp: +86-15026746401

E-Mail: alvin@ruifuchem.com


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Description:

Ruifu Chemical is the leading manufacturer of 3,4-Dihydro-2H-Pyran (DHP) (CAS: 110-87-2) with high quality, widely used as a hydroxyl-protecting reagent in organic synthesis. Ruifu provide worldwide delivery, competitive price, small and bulk quantities available. Purchase 3,4-Dihydro-2H-Pyran, Please contact: alvin@ruifuchem.com

Chemical Properties:

Chemical Name 3,4-Dihydro-2H-Pyran 
Synonyms DHP; 3,4-DHP; 3,4-Dihydropyran; Dihydropyran; 2,3,4-Trihydropyran, 2H-3,4-Dihydropyran, Dihydro-2H-Pyran; 2,3-Dihydropyran; δ2-Dihydropyran; 3,4-Dihydro-1,2-Pyran
Stock Status In Stock, Commercial Production  
CAS Number 110-87-2
Molecular Formula C5H8O
Molecular Weight 84.12 g/mol
Melting Point -70℃(lit.) 
Boiling Point 86℃(lit.) 
Flash Point -6℃ 
Density 0.922 g/mL at 25℃(lit.) 
Refractive Index n20/D 1.440(lit.)
Water Solubility  20 g/L (20℃)  
Hazard Class 3; Flammable Liquid
COA & MSDS Available
Sample  Available
Origin Shanghai, China
Brand Ruifu Chemical

Specifications:

Items Inspection Standards Results
Appearance Colorless Clear Liquid  Colorless Clear Liquid 
Purity / Analysis Method >99.0% (GC)  99.33%
Water by Karl Fischer  <0.30% 0.28% 
Tetrahydropyran <1.50% 0.62%
Density (20℃) 0.925~0.933 Complies 
Refractive Index n20/D 1.440~1.443 Complies 
Infrared Spectrum Consistent with Structure Complies 
Conclusion The product has been tested and complies with the given specifications

Package/Storage/Shipping:

Package: Bottle, 25kg/Drum, 180kg/Drum, or according to customer's requirement.
Storage: Keep the container tightly closed. Store in a cool, dry, well-ventilated warehouse away from incompatible substances. Protect from light and moisture. Incompatible with oxidizing agents, strong acids and alcohols.
Shipping: Deliver to worldwide by air, by FedEx / DHL Express. Provide fast and reliable delivery. 

Advantages:

Sufficient Capacity: Sufficient facilities and technicians

Professional Service: One stop purchasing service

OEM Package: Custom package and label available

Fast Delivery: If within stock, three days delivery guaranteed

Stable Supply: Maintain reasonable stock    

Technical Support: Technology solution available

Custom Synthesis Service: Ranged from grams to kilos

High Quality: Established a complete quality assurance system

FAQ:

How to Purchase? Please contact Dr. Alvin Huang: sales@ruifuchem.com or alvin@ruifuchem.com 
15 Years Experience? We have more than 15 years of experience in the manufacture and export of a wide range of high quality pharmaceutical intermediates or fine chemicals.
Main Markets? Sell to domestic market, North America, Europe, India, Korea, Japanese, Australia, etc.
Advantages? Superior quality, affordable price, professional services and technical support, fast delivery.
Quality AssuranceStrict quality control system. Professional equipment for analysis include NMR, LC-MS, GC, HPLC, ICP-MS, UV, IR, OR, K.F, ROI, LOD, MP, Clarity, Solubility, Microbial limit test, etc.
SamplesMost products provide free samples for quality evaluation, shipping cost should be paid by customers.
Factory AuditFactory audit welcome. Please make an appointment in advance.
MOQ? No MOQ. Small order is acceptable.
Delivery Time? If within stock, three days delivery guaranteed.
TransportationBy Express (FedEx, DHL), by Air, by Sea.
Documents? After sales service: COA, MOA, ROS, MSDS, etc. can be provided.
Custom SynthesisCan provide custom synthesis services to best fit your research needs.
Payment TermsProforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T (Telex Transfer), PayPal, Western Union, etc. 

110-87-2 - Safety Information:

Risk Codes R11 - Highly Flammable
R36/37/38 - Irritating to eyes, respiratory system and skin.
R36/38 - Irritating to eyes and skin.
R19 - May form explosive peroxides
Safety Description S16 - Keep away from sources of ignition.
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36 - Wear suitable protective clothing.
S37/39 - Wear suitable gloves and eye/face protection
S33 - Take precautionary measures against static discharges.
S7/9 -
UN IDs UN 2376 3/PG 2
WGK Germany 3
RTECS UP7700000
TSCA Yes
HS Code 2932999099
Hazard Note Highly Flammable/Irritant
Hazard Class 3
Packing Group II
Toxicity LD50 orally in Rabbit: > 4000 mg/kg

110-87-2 - Application:

3,4-Dihydro-2H-Pyran (DHP) (CAS: 110-87-2) 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.
3,4-Dihydro-2H-Pyran is widely used as OH Protection reagent.  Tetrahydropyran, pentanediol, Glutaric acid, valerolactone, pentadiene and resin products;  Can also be used as pharmaceutical intermediates; Can also be used as pharmaceutical intermediates; Can also be used as solvents, organic synthesis intermediates; Widely used for the protection of hydroxyl groups, generally do not react with Nucleophilic Reagents and organometallic reagents, it is resistant to strong alkali and is easy to change under low pH or Lewis acid conditions. Alcohol Group-protecting reagent; Widely used reagent for hydroxyl group protection. 

110-87-2 - Production Method:

3,4-Dihydro-2H-Pyran (CAS: 110-87-2) is obtained by dehydration and ring expansion of tetrahydrofurfuryl alcohol.

110-87-2 - 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.

110-87-2 - Storage Method:

Store in a cool and ventilated warehouse. Away from fire, heat source, anti-static. Storage temperature should not exceed 30℃. It should be stored separately from the oxidant, and mixed storage should not be avoided. Explosion-proof lighting and ventilation facilities shall be adopted. The use of spark-prone mechanical equipment and tools is prohibited. The storage area shall be equipped with emergency treatment equipment for leakage and appropriate containment materials. 

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