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Industrial 40% dimethylamine aqueous solution (Appendix A)

 Last Update: 2021-10-08
 Source: Internet
 Author: User

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Appendix A

(Standard appendix)

Typical chromatogram

A1 Method two determination of dimethylamine aqueous solution typical chromatogram

A typical chromatogram of dimethylamine aqueous solution is shown in Figure A1

Figure A1 Typical chromatogram of dimethylamine aqueous solution

A2 Chromatographic operating conditions

Column temperature: 50℃, vaporization chamber temperature=detection temperature=130℃;

Carrier gas (H ₂ ) flow rate: 60mL/min;

Bridge current: 150mA;

Injection volume: 2uL;

Paper speed: 30cm/h;

Chromatographic column: φ3 mm(id)×2m stainless steel column;

Carrier: 201 red carrier;

Fixing solution: cetyl alcohol , polyethylene glycol 600, potassium hydroxide

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