wuttz

Some Useful Laboratory Cooling Mixtures
Mixture Temperatures (Centigrade)

Ethanol/Dry ice -72

Acetone/Dry ice -78
Isopropanol/Dry ice -78
Isoamyl acetate/Liquid nitrogen -79
Acylonitrile/Liquid nitrogen -82
Sulfur dioxide/Dry ice -82
Ethyl acetate//Liquid nitrogen -84
Ethyl methyl ketone/Liquid nitrogen -86
Acrolein/Liquid nitrogen -88
Nitroethane/Liquid nitrogen -90
Heptane/Liquid nitrogen -91
Cyclopentane/Liquid nitrogen -93
Hexane/Liquid nitrogen -94
Toluene/Liquid nitrogen -95
Methanol/Liquid nitrogen -98
Diethyl ether/Dry ice -100

LN2 -196
LHe4 -270

WARNING: Please be careful with these substances as some are extremely dangerous to life and property. This is posted here for reference only.

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billbartuska

It would be helpful if you would also list the flash points and LD50s for those.

For example, Diethyl Ether has a very low flash point and Sulfur Dioxide is extremely toxic.
Toluene is a known carcinogen.

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wuttz

thanks for the info billbart, very important to always be cautious with mixing substances.
i was just researching coolant temperatures. i think acetone/dice would be cheapest + safest.

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heelsparky0501

yea the farthest that im willing to go with chemicals and D.ice is acetone :] dont wanna go to crazy. :P

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mega_option101

I'd actually down to Dimethyl Ether + Dry Ice....

I just would not want to keep the Dimethyl Ether stored in my house

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