Then, 500 μl of stannous chloride suspension (100 mg SnCl 2 in 1,000 μl ethylene glycol mixed well before pipetting) was added while stirring. A volume of 100 μl of ninhydrin reagent was added to 1–10 ...

The solution turns brown. This brown colour is the displaced bromine. The chlorine has gone to form sodium chloride.

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After solubilization, and under stirring and inert atmosphere, chloroacetyl chloride was added (molar ratio PEG:chloroacetyl chloride = 1:6), remaining under stirring at room temperature for 8 h.

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DRC Disruptions Persist; Low Operating Rate for Downstream Enterprises Resuming Production [SMM Tin Midday Review] ...

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