L050083

Cap B

• NACRES: NA.51
• UNSPSC Code: 12352200

Properties

• product line: Proligo Reagents
• impurities: ≤200 ppm Water content (Karl Fischer)
• Quality Level: 200

Description

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)

Safety Information

• pictograms: GHS02,GHS08,GHS05,GHS07
• signalword: Danger
• hcodes: H225,H302 + H312,H314,H335,H336,H351,H361d
• pcodes: P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Carc. 2 - Eye Dam. 1 - Flam. Liq. 2 - Repr. 2 - Skin Corr. 1B - STOT SE 3
• target_organs: Central nervous system, Respiratory system
• supp_hazards: EUH019
• Storage Class: 3 - Flammable liquids
• wgk: WGK 2
• flash_point_f: 6.1 °F
• flash_point_c: -14.4 °C