Why not use liquid chorine instead of bleach ?

[giroup01]

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

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,

[hancop]

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

[hancop]

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

[giroup01]

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.

[Kinguni]

Expensive bleach! $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.

[prh129]

One other point, in case you're not aware, is that the higher concentrations of bleach will break down faster so try to keep them away from heat & light & use them up first if you have both liquid chlorine and bleach.

Peter

[cleancloths]

Nobody, I repeat NOBODY uses liquid chlorine in a swimming pool. You might think you are, but you are using bleach. Some large commercial pools use chlorine gas, but never liquid. You are not equipped to deal with liquid chlorine. Believe me, I am a chemical engineer and used to work in a chlorine / caustic soda production facility. Liquid chlorine does not exist in nature, and the only way to get it is to compress and deep chill to liquefy it. It will only remain a liquid under pressure and low temperature. When exposed to normal pressures and temperatures it will quickly flash off to a greenish yellow gas. If you were hanging around liquid chlorine without a respirator you would most likely now be in a hospital with chemical pneumonia, unless you were already dead.

[giroup01]

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

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

[hancop]

Sorry, don't know those people