Cap B
ALDRICH/L050031
Product Type: Custom product
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| color | clear Appearance of Solution |
| impurities | ≤120 ppm water content (Karl Fischer) |
| product line | Proligo Reagents |
| Quality Level | 200  |
| suitability | conforms to structure (GC, Formulation) |
| Other Notes: | Cap B solution, containing tetrahydrofuran (THF) and N-methylimidazole (NMI), is mixed in situ with Cap A solution during the capping (acetylation) reaction. Lutidine is applied as a mild base while NMI provides a powerful acylation catalyst. |
| Preparation Note: | Tetrahydrofurane / N-Methylimidazole 84/16 (v/v) |
| Symbol |     GHS02,GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H302 + H312 - H314 - H335 - H351 |
| Precautionary statements | P210 - P260 - P280 - P305 + P351 + P338 - P370 + P378 - P403 + P235 |
| Hazard Codes | F,C |
| Risk Statements | 11-19-21-34-37-40 |
| Safety Statements | 16-26-36/37/39-45 |
| RIDADR | UN 2924 8(3) / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 6.1 °F |
| Flash Point(C) | -14.4 °C |
| Supplemental Hazard Statements | EUH019 |
| UNSPSC | 12352200 |