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Key Documents

L050250

Sigma-Aldrich

Cap B

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About This Item

UNSPSC Code:
12352200

type

for DNA synthesis

product line

Proligo Reagents

storage condition

dry at room temperature

impurities

≤100 ppm water content (Karl Fischer)

color

clear

suitability

conforms to structure (GC, Formulation)

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Preparation Note

Acetonitrile / N-Methylimidazole / Pyridine 8/1/1 (v/v/v)

Other Notes

Cap B solution, containing acetonitrile (ACN), pyridine 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.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Repr. 2 - Skin Corr. 1B

Storage Class

3 - Flammable liquids

wgk_germany

WGK 2

flash_point_f

35.6 °F

flash_point_c

2 °C


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