Cap B
ALDRICH/L050083
Product Type: Custom product
| impurities | ≤200 ppm Water content (Karl Fischer) |
| product line | Proligo Reagents |
| Quality Level | 200  |
| General description: | Cap B solution contains tetrahydrofuran (THF), pyridine, and N-methylimidazole (NMI). It is mixed in situ with Cap A solution during the capping (acetylation) reaction. Pyridine is applied as a mild base while NMI provides a powerful acylation catalyst. |
| Other Notes: | Cap B solution, containing tetrahydrofuran (THF), pyridine and N-methylimidazole (NMI), is mixed in situ with Cap A solution during the capping (acetylation) reaction. Pyridine is applied as a mild base while NMI provides a powerful acylation catalyst. |
| Packaging: | 200L stainless steel returnable drum |
| Preparation Note: | Tetrahydrofurane / N-Methylimidazole / Pyridine 8/1/1 (v/v/v) |
| Symbol |     GHS02,GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H302 + H312 - H314 - H335 - H336 - H351 |
| Precautionary statements | P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | F,C |
| Risk Statements | 11-19-20/21/22-34-37-40 |
| Safety Statements | 16-26-36/37/39-45 |
| RIDADR | UN 2924 8(3) / PGII |
| WGK Germany | WGK 2 |
| Flash Point(F) | 6.1 °F |
| Flash Point(C) | -14.4 °C |
| Supplemental Hazard Statements | EUH019 |
| UNSPSC | 12352200 |