2,5-Dimethylpyridine
2,5-lutidine
CAS: 589-93-5
Molecular Formula: C7H9N
2,5-Dimethylpyridine - Names and Identifiers
| Name | 2,5-lutidine |
| Synonyms | 25L Lutidine 2,5-lutidine 2,5-LUTIDINE 2,5-DIMETHYLPYRIDINE 2,5-Dimethylpyridine 2,5-dimethyl-pyridin pyridine,2,5-dimethyl- 2,5-two Methyl pyridine 5-methyl-2-methylpyridine |
| CAS | 589-93-5 |
| EINECS | 209-666-9 |
| InChI | InChI=1/C7H9N/c1-6-3-4-7(2)8-5-6/h3-5H,1-2H3 |
2,5-Dimethylpyridine - Physico-chemical Properties
| Molecular Formula | C7H9N |
| Molar Mass | 107.15 |
| Density | 0.926g/mLat 25°C(lit.) |
| Melting Point | −15°C(lit.) |
| Boling Point | 157°C(lit.) |
| Flash Point | 118°F |
| Water Solubility | 77g/L(23 ºC) |
| Vapor Presure | 2.4 mm Hg ( 20 °C) |
| Appearance | clear liquid |
| Color | Colorless to Light orange to Yellow |
| pKa | 6.4(at 25℃) |
| Sensitive | Hygroscopic |
| Refractive Index | n20/D 1.499(lit.) |
| Physical and Chemical Properties | Colorless liquid. Melting Point -15.9 °c, boiling point 152-155 °c (157 °c, 162-166 °c), relative density 0.9261(25/4 °c), refractive index 1.4991, flash point 47 °c. Soluble in ethanol, ether, cold water, slightly soluble in hot water. Can be volatilized with water vapor. |
2,5-Dimethylpyridine - Risk and Safety
| Risk Codes | R10 - Flammable R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| 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. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| RTECS | OK9625000 |
| Hazard Class | 3.2 |
| Packing Group | III |
2,5-Dimethylpyridine - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | for organic synthesis. |
| Production method | It is obtained by separating the 156-159 ℃ pyridine base fraction recovered from coal coking by-products. |
| category | flammable liquid |
| toxicity classification | poisoning |
| acute toxicity | oral administration-rat LD50: 800 mg/kg; Oral administration-mouse LD50: 670 mg/m3 |
| flammability hazard characteristics | it is more flammable when exposed to open flames, high temperatures and oxidants; toxic nitrogen oxide gas when exposed to heat |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidants and acids |
| fire extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 fire extinguishing agent |
Last Update：2024-04-10 22:29:15
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View History
2,5-Dimethylpyridine
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