How do you perform a melting point test?

Tough Old Man · 08-22-2005, 09:26 PM

I need to test my powder to determine whether it's prop or cyp. I know that prop melts between 197.6 and 204.8 degrees F. Cyp between 208.4 and 215.6 degrees. But how do you do it.

PT

**Mudge** · 08-22-2005, 09:44 PM

You take it to that point and see if it melts. Obviously you only have a few degrees of error to work with.

Witmaster · 08-22-2005, 09:52 PM

Well Water boils at 212 so, if you are limited on equipment, you could put a tempered beaker filled with water over flame and heat it to 197 degrees. You then take your powder in a seperate tempered vial and dip it into the heated water. Gradually heat the water and moniter the temp.

Keep in mind this will happen pretty quickly so you need to be paying very close attention.

Tough Old Man · 08-22-2005, 09:59 PM

Cool but how much powder. Are we talking about about a pinch, a 1/2 gram a gram? Help

Quote:

Originally Posted by Witmaster

Well Water boils at 212 so, if you are limited on equipment, you could put a tempered beaker filled with water over flame and heat it to 197 degrees. You then take your powder in a seperate tempered vial and dip it into the heated water. Gradually heat the water and moniter the temp.

Keep in mind this will happen pretty quickly so you need to be paying very close attention.

**Mudge** · 08-23-2005, 01:16 AM

Quanity doesn't matter, getting within a couple degrees though - is going to be fun with kitchen equipment. I would bring the temperature up very slowly watching a digital thermo, try to calibrate it to see where its at approximately for accuracy.

And again, talk to your source.

gococksDJS · 08-23-2005, 07:07 AM

If you had access to a hot plate of some sort, it's much easier to control temp with them.

Tough Old Man · 08-23-2005, 11:44 AM

Ok I perform a melting point test and it melted at approx 210-218 degrees tell ing me it is cyp and not Prop. Prop melts at 244-251 degrees and the oven never reach more then 220 degrees. My source is going to send me another 50 grams. Thank you all for your help.
PT

Quote:

Originally Posted by Mudge

Quanity doesn't matter, getting within a couple degrees though - is going to be fun with kitchen equipment. I would bring the temperature up very slowly watching a digital thermo, try to calibrate it to see where its at approximately for accuracy.

And again, talk to your source.

Witmaster · 08-23-2005, 01:30 PM

Good Job P.T.

Tough Old Man · 08-23-2005, 02:28 PM

Now it time to take Dg's knowledge and put it to work. I have 20 grams left and hope I don't fuck this up like the other 30 grams. Shouldn't have any problems as i'll add bb to it this time.

08-22-2005, 09:26 PM	#1
Tough Old Man Canine club CEO Join Date: Sep 2004 Location: baja calif, Mexico Posts: 6,933 Photos: 1	How do you perform a melting point test? I need to test my powder to determine whether it's prop or cyp. I know that prop melts between 197.6 and 204.8 degrees F. Cyp between 208.4 and 215.6 degrees. But how do you do it. PT

08-22-2005, 09:44 PM	#2
Mudge Dieting I swear! Super Moderator Join Date: Jun 2002 Location: Here Posts: 23,477 Photos: 1	You take it to that point and see if it melts. Obviously you only have a few degrees of error to work with. Kinesiology Comp Bench MaxCalc Motivation Bench form Charles Poliquin When I let go of what I am, I become what I might be. Lao-Tzu

08-22-2005, 09:52 PM	#3
Witmaster Esprit de Corps Elite Member Join Date: May 2004 Location: Oklahoma Posts: 4,995 Photos: 6	Well Water boils at 212 so, if you are limited on equipment, you could put a tempered beaker filled with water over flame and heat it to 197 degrees. You then take your powder in a seperate tempered vial and dip it into the heated water. Gradually heat the water and moniter the temp. Keep in mind this will happen pretty quickly so you need to be paying very close attention. NEVER write a check with your mouth that you can't cash with your ASS!! I can run faster mad than you can scared "All right brain... I don't like you and you don't like me. So let's just do this and I'll get back to killing you with beer" ~ Homer Simpson

08-23-2005, 01:16 AM	#5
Mudge Dieting I swear! Super Moderator Join Date: Jun 2002 Location: Here Posts: 23,477 Photos: 1	Quanity doesn't matter, getting within a couple degrees though - is going to be fun with kitchen equipment. I would bring the temperature up very slowly watching a digital thermo, try to calibrate it to see where its at approximately for accuracy. And again, talk to your source. Kinesiology Comp Bench MaxCalc Motivation Bench form Charles Poliquin When I let go of what I am, I become what I might be. Lao-Tzu

08-23-2005, 01:30 PM	#8
Witmaster Esprit de Corps Elite Member Join Date: May 2004 Location: Oklahoma Posts: 4,995 Photos: 6	Good Job P.T. NEVER write a check with your mouth that you can't cash with your ASS!! I can run faster mad than you can scared "All right brain... I don't like you and you don't like me. So let's just do this and I'll get back to killing you with beer" ~ Homer Simpson

08-23-2005, 07:07 AM	#6
gococksDJS RIP Foreman Join Date: Jul 2004 Posts: 6,000	If you had access to a hot plate of some sort, it's much easier to control temp with them.

08-23-2005, 02:28 PM	#9
Tough Old Man Canine club CEO Join Date: Sep 2004 Location: baja calif, Mexico Posts: 6,933 Photos: 1	Now it time to take Dg's knowledge and put it to work. I have 20 grams left and hope I don't fuck this up like the other 30 grams. Shouldn't have any problems as i'll add bb to it this time.

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