| |
|
Inventor: Combe; Michel D.
Address: Fox Point, WI
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7553863 |
Ultrapure 4-methylpyrazole |
June 30, 2009 |
| Disclosed is an ultrapure 4-methylpyrazole containing less than 0.1% pyrazole and containing less than 10 ppm each of hydrazine and nitrobenzaldehyde. The ultrapure 4-methylpyrazole is prepared by a novel process so that less than 0.01% of ethylvinyl ether is present. |
|
|
|
