| TETRAHYDROPYRAN | ||
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PRODUCT IDENTIFICATION |
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| CAS NO. | 142-68-7 |
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| EINECS NO. | 205-552-8 | |
| FORMULA | C5H10O | |
| MOL WT. | 86.13 | |
| H.S. CODE | ||
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TOXICITY |
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| SYNONYMS | Oxane; Pentamethylene oxide; Tetrahydro-2H-pyran; | |
| Oxacyclohexane; THP; Tetrahidropirano; Tétrahydropyranne; | ||
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SMILES |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | clear liquid | |
| MELTING POINT | -45 C | |
| BOILING POINT | 88 C | |
| SPECIFIC GRAVITY | 0.881 | |
| SOLUBILITY IN WATER | ||
| pH | ||
| VAPOR DENSITY | ||
| AUTOIGNITION |
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| NFPA RATINGS | Health: 1; Flammability: 4; Reactivity: 1 | |
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REFRACTIVE INDEX |
1.419 -1.422 | |
| FLASH POINT |
-15 C |
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| STABILITY | May form peroxides in the absence of inhibitors. Light sensitive | |
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GENERAL DESCRIPTION & APPLICATIONS |
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| Pyran is a heterocyclic compound of six-membered diunsaturated ring structure composed of five carbon atoms and one oxygen atom. The ring is the basis of the pyranoses' cyclic or ring structures. The term of pyran also indicate six membered cyclic ether (also called oxane); three membered cyclic ether is called epoxide (or oxirane); four membered cyclic ether, oxetane; five membered cyclic ether, furan (or oxolane) respectively. Their unhindered oxygen atom carries two unshared pairs of electrons - a structure which favors the formation of coordination complexes and the solvation of cations. Cyclic ethers are used as important solvents, as chemical intermediate and as monomer for ring-opening polymerization. They are unstable at room temperature due to possibility of peroxide formation; stabilizer is sometimes needed for storage and transportation. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
Clear liquid | |
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PURITY |
99.0% min |
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WATER |
0.2% max |
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COLOR (APHA) |
20 max |
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| TRANSPORTATION | ||
| PACKING | 170kgs in drum | |
| HAZARD CLASS | 3 (Packing Group: II) | |
| UN NO. | 1993, 3271 | |
| OTHER INFORMATION | ||
| Hazard Symbols: + XI, Risk Phrases: 11-36/37/38, Safety Phrases: 9-16-26-33-36 | ||
