3-Methylpyridine N-oxide
3-Picoline-N-oxide
CAS: 1003-73-2
Molecular Formula: C6H7NO
3-Methylpyridine N-oxide - Names and Identifiers
| Name | 3-Picoline-N-oxide |
| Synonyms | 3-picoline-oxide 3-Picoline N-oxide 3-Picoline-N-oxide 3-Picoline, 1-oxide BETA-PICOLINE-N-OXIDE beta-Picoline 1-oxide 3-Methylpyrine-N-Oxide 3-Methylpyridin-N-oxid 3-methyl-pyridin1-oxide 3-Methylpyridine N-oxide 3-methylpyridine 1-oxide N-oxideof3-methylpyridine |
| CAS | 1003-73-2 |
| EINECS | 213-714-4 |
| InChI | InChI=1/C6H7NO/c1-6-3-2-4-7(8)5-6/h2-5H,1H3 |
3-Methylpyridine N-oxide - Physico-chemical Properties
| Molecular Formula | C6H7NO |
| Molar Mass | 109.13 |
| Density | 1.13 |
| Melting Point | 37-39°C(lit.) |
| Boling Point | 150°C15mm Hg(lit.) |
| Flash Point | >230°F |
| Water Solubility | soluble |
| Solubility | >2000g/l |
| Vapor Presure | 0.00578mmHg at 25°C |
| Appearance | Crystalline Low Melting Mass |
| Color | Pale yellow to brown |
| BRN | 106327 |
| pKa | pK1:10.921(+1) (25°C) |
| Storage Condition | Sealed in dry,Room Temperature |
| Sensitive | Hygroscopic |
| Refractive Index | 1.5444 (estimate) |
| Physical and Chemical Properties | This product is a colorless transparent liquid, crystallization into viscous, B. p.150 ℃/2kPa,m.p.38~40 ℃, soluble in water and organic solvents. |
3-Methylpyridine N-oxide - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. |
| WGK Germany | 1 |
| RTECS | UT5799000 |
| FLUKA BRAND F CODES | 3-10 |
| TSCA | Yes |
| HS Code | 29333990 |
3-Methylpyridine N-oxide - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | 3-picoline oxide is an organic compound, it can be used for the preparation of 2-chloro-5-methylpyridine compounds. 2-chloro-5-methylpyridine is an important intermediate for the production of pesticide imidacloprid and pyridin. Imidacloprid and Pyridoxine is a kind of chloronicotinoid insecticide, has the effect of killing and stomach poison to pests, and has excellent internal absorption activity, is a kind of efficient, broad-spectrum, safe, novel mechanism of action of pesticides, organophosphates, carbamates and synthetic pyrethroids with severe resistance to insect pests with special effects. |
| Use | 3-methylpyridine-n-oxide is an intermediate of imidacloprid and acetamiprid, used in the synthesis of the next intermediate 2-chloro-5-methylpyridine. |
| production method | the preparation method is prepared by reacting 3-methylpyridine with hydrogen peroxide in the presence of a catalyst. Add certain 3-methyl pyridine to the reaction kettle, add the catalyst, Dropwise add hydrogen peroxide at 60~75 ℃, and react at this temperature for 7~8H, this is followed by dehydration under reduced pressure to obtain 3-methylpyridine-n-oxide. |
Last Update：2024-04-10 22:29:15
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