Why not use liquid chorine instead of bleach ?

Here in Canada we can get the purox liquid chlorine for about $1 per litre at Canadian Tire. Why would I use bleach instead of this ?

Thanks

Liquid chlorine is bleach. The only difference I am aware of is that the stuff labeled liquid chlorine comes in higher concentrations like 12.5%. Whether you purchase stuff labeled "liquid chlorine" or "bleach", make sure you know the concentration before you dump it in - so you don't fade a liner or over chlorinate.

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Originally Posted by hancop

Here in Canada we can get the purox liquid chlorine for about $1 per litre at Canadian Tire. Why would I use bleach instead of this ?

Thanks

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Nice to see another Canadian here! We'll be driving from Quebec to Whitby this weekend to visit friends.

I just did the math on this yesterday in fact and came to the conclusion that the cost per ppm between Purox from Canadian Tire and Javex from IGA is the same, with cal hypo being a bit less expensive than bleach. And you have to buy twice as much from IGA because the bleach there is 5-6% and at Canadian Tire it's 10-12% . I'll find the numbers in My Big Pile o' Papers and post them for you.

Regards,

Interesting that you are coming to Whitby, as that is where I live. :)

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Originally Posted by hancop

Here in Canada we can get the purox liquid chlorine for about $1 per litre at Canadian Tire. Why would I use bleach instead of this ?

Thanks

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Purox is around 10% and bleach is around 5%. If purox is around $1/l ($4.99 for a 5l bottle) and a 3.6l bottle of bleach at Wal-Mart is $1.17, the cost comparison is in favour of bleach by amost 50% if you do the math at $.325/l.

I just checked the specs on the purox. It says the following:

10.8% (w/w) sodium hypochlorite, or 10.8 grams sodium hypochlorite per 100 grams of bleach solution.

Then right under the above, it says the following:

12.0 % (w/v) available chlorine, or 12 grams of free chlorine per 100 ml of bleach solution.


Therefore since the container is 5L and 1000ml equals 1L, what is the % chlorine we should use for this container for our calculations ?

I also noticed that the PH is labeled as 12.8 minimum.

Thanks

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Originally Posted by hancop

Interesting that you are coming to Whitby, as that is where I live. :)

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It's a small planet. Do you know Nicole, George and Jeanine ? ;)

Sorry, don't know those people

Here's the math, do correct me if I'm wrong. All prices in CDN$.

For cal hypo, I bought 25 kg of 70% cal hypo for $77.93, that's $0.0031/g, you need 29.5 grams for 1 ppm in 20000 liters so that's $0.09/ppm. (Source: Taylor Chemistry Guide from my K2005)

For the Canadian Tire Purox, it's $4.99 for 5 liters, that's $0.998/liter, you need 0.2 liters of the stuff for 1 ppm in 20000 liters (assume it's 10%) so that's $0.20/ppm. (Source: www.canadiantire.ca)

For the IGA Javex, it's $2.49 for 3.6 liters, that's $0.69/liter, you need 0.4 liters of the stuff for 1 ppm in 20000 liters (assume it's 5%) so that's $0.27/ppm. (Source: www.iga.net)

I think the math works out, let me know if it doesn't.:confused:

Expensive bleach! :eek: $1.17 for the same size of WalMart band.

I'm interested to see if your calculations for cal hypo are correct. It's a little beyond me.