Chironex

OK, all of you chemists out there, I need your help, please. I want to end up with a dilution of 350 micro moles/liter of ethrel (Ethephon - 2-chlorethyl phosphonic acid) in final solution. I am starting with 1 pint containing .04 pounds per 473.16 ml, or (.33 pounds per gallon) from a 3.9% solution containing 96.1% inert ingredients. The molecular weight of this compound is 144.49401 g/mole. I need the final solution to contain .00035 moles of ethephon/liter.

How much would I need to dilute this to achieve the desired amount (350 micro moles) in my final solution?

By my calculations I would need to add 1.93757246 ml to 1 liter of water to achieve 350 micromoles dilution. Can someone please help me to verify this? (I would round it to 1.94 ml/L)


Thanks in advnce for your assistance!

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Scot