Peroxides in Petroleum Spirits?

[FriendlyFinger]

Does Petroleum Spirits form explosive peroxides?

Swim used some 40¢X-60¢X ligroin a year ago to extract THC from green stuff and want's to use the same solvent again. After extraction, swim collects the spent powered material, rams it in a wide neck flask, puts it in a water bath and recovers the solvent untill dry.

If so, can you test the same way you would for Diethyl Ether.?
Does a Ferro-salt destroy the peroxide quickly?

Thanks,
FF

[raffike]

Does Petroleum Spirits form explosive peroxides?
They don't form explosives even in the presence of H2O2,alkanes are pretty stable,they only burn when heated to some certain temperature.

[Lilienthal]

For a simple peroxide test soak filter paper stripes in KI / starch solution. Peroxides should give a purple-blueish spot due to the I₂ / starch inclusion complex. But only ethers (especially diethylether) form explosive peroxides on storage under light and oxygen.

[GC_MS]

For a simple peroxide test soak filter paper stripes in KI / starch solution. Peroxides should give a purple-blueish spot due to the I2 / starch inclusion complex. But only ethers (especially diethylether) form explosive peroxides on storage under light and oxygen.

Is this KI/starch solution turning purple the same as the iodometric titration they use to determine the concentration of peracids in a solution? I have read about "iodometric titrations" in a couple of peracid-related articles, but they never explain how exactly they performed the titration.

[lugh]

is the technique in which an oxidant is treated with I^- to produce I₃^-, which is then tritrated, usually with thiosulfate