20 grams of melt-in-your hand gallium for $10


#1

[Read the post]


#2

…I’m going to need more reassurance than probably safer than playing with mercury.


#3


#4

Gallium is fun to use for the disappearing spoon trick. As a side note I absolutely love Sam Kean’s book The Disappearing Spoon about the periodic table and stories about all the elements.


#5

Let’s not forget the aluminum infiltration trick.

I had the impression that this isn’t the sort of thing you want to accidentally ingest, though?


#6

Hey, as long as it’s not the infamous rare melt-your-hand variant.


#7

From the Wiki page: “While metallic gallium is not considered toxic, the data is inconclusive. Some sources suggest that it may cause dermatitis from prolonged exposure; but other tests have not caused a positive reaction.”


#8

I have a friend. It is one of his, uh, life goals, to one day float in a tub of gallium.


#9

Well, with enough 20-gram samples…


#10

You joke, but 10 minutes later, he’s already calculated out he’d need $95,000 to fill his bath.


#11

Buy your own terminator kit! Watch it melt and imitate your own face before it ends your life!


#12

I couldn’t get this to work when I tried it, but maybe I didn’t scratch through anodizing enough…


#13

That’s on a tub of gallium

Gallium is currently about $250/kg, so the Amazon price is about twice the bulk price (not bad actually). Assuming he needs 100kg to float, that’s a mere $25000.
You won’t need to fill a bath because, with a density of 5.9 and as I note above, you would more or less float on top of it. Still displace body weight, of course. A decent quantity to half fill a typical bath would be about 600kg, or $150000, but your floor loading might not permit.

I would say, get it while it’s cheap.


#14

Also, if you fell in molten metal, you would float as well.


#15

It suddenly occurred to me this conversation has been had before.


#16

20 grams of melt-in-your hand gallium for $10

One more hyphen: melt-in-your-hand gallium.


#17

$10? Bought.

Don’t drop it on the carpet. You’re welcome.


#18

Not too shabby to accomplish a life goal. I’ve paid more than that for a used Toyota (not a life goal).


#19

86 degrees? It’s about that hot in Silicon Valley today; maybe a good time for home-made gallium semiconductors?


#20

I prefer chocolate.

“probably safer” than mercury…