26 replies to this topic

[Mike Green]

10% solution of CaCl = 1.090 SG @77F RO water.

https://www.oxy.com/...e/173-01791.pdf

https://www.homebrew...ad.php?t=501377

Edited by Mike Green, 05 December 2016 - 11:32 PM.

[No Party JKor]

Here is my post from the HBT thread linked above. I recalled making the post but i didn't remember the details.

Great post. I'll never forget the first time I tried to weigh out some CaCl for a batch. It was the height of summer and I'd just bought a brand new pouch from the LHBS. I brought it out to our prototyping lab at work to use the gram balance. Our prototyping lab is in a smaller outbuilding from our main facility and is not climate controlled (no A/C!). I zipped it open and started weighing, before I could even get enough on the scale to hit my number I was already dealing with a goopy mess. I couldn't believe it.

I can't argue with the method in the OP, but my tack on this would likely be to create the anhydride in the oven, get a baseline mass of anhydrous and calculate the remaining quantity each time I pulled from the jar on an anhydrous basis.

For example, say cooked my CaCl2 to create 100g on anhydrous basis and then put it away.

Next time I brew I measure the weight of the jar and it's 105g. I know that each gram I use will have (100/105=) .952g of anhydrous. If I want 2g on anhydrous, I would weigh out (2/.952=) 2.10g of partially hydrated CaCl2. Now I know I have 98g of anhydrous remaining (and 102.9g of total mass remaining).

You can continue to repeat this process as long as you track your anhydrous content.

I can certainly see the merit in both methods, though. Now I'm tempted to go bake my CaCl2 to see what I've actually been using.

[mabrungard]

Heating the solids will cause them to melt into a solid mass that will have to be broken up to be more usable. 

[No Party JKor]

Martin's water chemistry post alarm went off!

[positiveContact]

Martin's water chemistry post alarm went off!

 

must have a google alert set up

[No Party JKor]

Heating the solids will cause them to melt into a solid mass that will have to be broken up to be more usable.

I'm going to give it a shot and see what i get. I noticed that the melting point drops significantly as the compound hydrates. Do you know how high in temp you need to go to get anhydrous?

[HVB]

must have a google alert set up

Yes he still has not addressed my pH issues