1923Views16Replies

Author Options:

Is there any water soluble powder that when compressed into a form, stays that way? Answered

Basically what the title says, I need it for an experiment. 

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.
0
steveastrouk
steveastrouk

11 years ago

Mix nearly any fine powder with a little starch powder and it will "tablet". We've pelletised glass powders like that.

0
Zem
Zem

Answer 11 years ago

Corn startch? Or just startch? 

0
orksecurity
orksecurity

11 years ago

Soap?

I think we need to know more about what you're trying to construct, what it has to stand up to while solid, and how quickly you want it to dissolve. After all, _iron_ will dissolve if you give it enough time...

0
Zem
Zem

Answer 11 years ago

I'm trying to get baking soda to compress into little tablets... But it wouldn't work, so I asked the question above 

0
gearhead1951
gearhead1951

11 years ago

try corn starch ,  that was th' original medium for making medicine into pills

0
seandogue
seandogue

Answer 11 years ago

x-actly (I came back to the thread just to add those two, but you beat me to it....)

0
lemonie
lemonie

11 years ago

Several tonnes will compress a lot of powders into lumps. Dampening them helps, but I reckon steve has a good answer on this.

L

0
steveastrouk
steveastrouk

Answer 11 years ago

I thought that pressure was all you needed, until trying to compress glass powders. My grandfather was a pharmacist, and my dad remembered the "magic ingredient"

0
lemonie
lemonie

Answer 11 years ago

It depends upon what it is. Potassium bromide for example will press into transparent disks (~10 tonnes per square cm), glass I wouldn't expect. But ye-olde pharacutical preparations are obviously tried & tested - a good answer.

L

0
lemonie
lemonie

Answer 11 years ago

Although I may be out on the pressure, the gauge did read 10 tonnes, but I'm not too sure after that.

L

0
Kiteman
Kiteman

11 years ago

Sugar
Salt
Baking powder
Poster paint...

...just about any powder can be pressed into solid blocks with enough pressure.