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Tetrahydropyran CAS#142-68-7

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Chemical Name:Tetrahydropyran

CAS No.:142-68-7

Molecular Formula:C5H10O

Molecular weight:86.13

Sample:Available

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Product Details

Products Description of Tetrahydropyran CAS#142-68-7

Tetrahydropyran, also known as oxadiazine, is a six-membered oxygen-containing saturated heterocyclic ring. It is a colorless, flammable liquid at room temperature with a special smell. It is miscible in water, ethanol, ether, and other organic solvents. It generates explosive organic peroxides under light. It is prepared by hydrogenation of dihydropyran in the presence of Raney nickel or reaction of 5-dibromopentane and water in the presence of zinc oxide. It is mainly used as a solvent for nitro spray paint, rubber, and Grignard reaction. Tetrahydropyran ring-containing substances exist in many natural products. It is the structural core of pyranose. The marine biotoxin Maitotoxin contains 28 tetrahydropyran rings.

Tetrahydropyran Chemical Properties

Melting point	-45 °C (lit.)
Boiling point	88 °C (lit.)
density	0.881 g/mL at 25 °C (lit.)
vapor density	3 (vs air)
refractive index	n20/D 1.42(lit.)
Fp	4 °F
storage temp.	Store below +30°C.
solubility	>80.2g/l
form	Liquid
color	Clear colorless
Odor	at 0.10?%?in?dipropylene glycol. pungent sweet ethereal
Water Solubility	80 g/L (25 ºC)
Merck	14,9217
BRN	102436
Dielectric constant	7.3（30℃）
InChIKey	DHXVGJBLRPWPCS-UHFFFAOYSA-N
LogP	0.950
CAS DataBase Reference	142-68-7(CAS DataBase Reference)
NIST Chemistry Reference	2H-Pyran, tetrahydro-(142-68-7)
EPA Substance Registry System	Tetrahydropyran (142-68-7)

Safety Information

Hazard Codes	F,Xi,Xn
Risk Statements	11-36/37/38-9-19-52/53-22
Safety Statements	9-16-26-33-36-61
RIDADR	UN 1993 3/PG 2
WGK Germany	3
TSCA	Yes
HazardClass	3
PackingGroup	II
HS Code	29321100
Hazardous Substances Data	142-68-7(Hazardous Substances Data)

Product Application of Tetrahydropyran CAS#142-68-7

Tetrahydropyran is a pharmaceutical intermediate, commonly used in 1,5-dichloropentane, which can be used to synthesize heptanediamine and pimelic acid, and is also used in the production of synthetic fibers.

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