tetrahydropyran
| Section 1. Identification | |||
|---|---|---|---|
| Chemical Name | tetrahydropyran | CAS No. | 142-68-7 |
| Synonyms | pentamethyleneoxide | Chinese Name | 四氢吡喃 |
| Molecular Formula | C5H10O | Molecular Weight | 86.1323 |
| UN No. | 3271 | Data Source | PubChem (NIH/NLM) |
| GHS Hazard Classification | |
|---|---|
| Signal Word | DANGER |
| Pictograms | GHS02 · Flammable GHS07 · Irritant |
| Hazard Statements | H225H315H319H335 |
| Precautionary Statements | P210P233P240P241P242P243P261P264P264+P265P271P280P302+P352P303+P361+P353P304+P340P305+P351+P338P319P321P332+P317P337+P317P362+P364P370+P378P403+P233P403+P235P405P501 |
| Contents | |||
|---|---|---|---|
| Section 2 | Hazards Identification | Section 5 | Fire-Fighting Measures |
| Section 9 | Physical and Chemical Properties | Section 10 | Stability and Reactivity |
| Section 11 | Toxicological Information | ||
Section 2. Hazards Identification
H225 (100%): Highly Flammable liquid and vapor [Danger Flammable liquids]
H315 (82.4%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (82.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (80.4%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P210, P233, P240, P241, P242, P243, P261, P264, P264+P265, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P403+P235, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 51 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
H225: Highly Flammable liquid and vapor [Danger Flammable liquids]
P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement)
Section 5. Fire-Fighting Measures
ALCOHOL FOAM.
Section 9. Physical and Chemical Properties
Colorless liquid with a pungent sweet odor like ether; [HSDB]
COLORLESS, MOBILE LIQUID
PUNGENT, SWEETISH ODOR
ETHER-LIKE
-49.2 °C
-4.0 °F (-20 °C) CC
MISCIBLE WITH ALC, ETHER, MANY OTHER ORG SOLVENTS
SOL IN BENZENE
water solubility = 80,200 mg/l @ 25 °C
0.8814 @ 20 °C/4 °C
4.0 (AIR= 1)
71.5 [mmHg]
vapor pressure = 71.5 mm Hg @ 25 °C
log Kow = 0.95
Henry's Law constant = 1.25X10-4 atm-cu m/mol @ 25 °C
FORMS PEROXIDES ON EXPOSURE TO AIR
INDEX OF REFRACTION: 1.4211 @ 20 °C/D
AZEOTROPE WITH WATER, BP 71 °C, CONTAINS 8.5% WATER; DIPOLE MOMENT: 1.87
hydroxyl radical rate constant = 1.38X10-11 cu m/molc-sec @ 25 °C
Coriolis coupling
Schoenflies notation
Atomic environment
Boiling point
Centrifugal distortion
Chemical bond
Chemical shift
Dielectric constant
Electric dipole moment
Equilibrium structure
Excess enthalpy
Fusion temperature
Heat of solution
Heat of sublimation
Internuclear distance
Lineshape
Melting temperature
Mixing enthalpy
Molecular structure
Nuclear magnetic resonance
Nuclear quadrupole coupling
Section 10. Stability and Reactivity
Tetrahydropyran
D: Other compounds that may form peroxides
Section 11. Toxicological Information
Neurotoxin - Acute solvent syndrome
LDLO RATS ORAL 3000 MG/KG
Disclaimer: This information is compiled for reference only and does not replace the manufacturer's official Safety Data Sheet. Always consult the supplier's SDS before handling any chemical.
