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Thread: Sodium hydrochlorite and sodium hydroxide in bleach

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    Sodium hydrochlorite and sodium hydroxide in bleach

    Usually I get generic bleach at Publix. The label says it contains Sodium hydrochlorite and "other materials". It works fine.

    Sometimes when they are sold out of the generic bleach we get Clorox concentrated bleach. The label says it contains Sodium hydrochlorite and sodium hydroxide. It makes bubbles on the surface of the pool. The bubbles go away in a few minutes, and it is not a problem, but I wonder what the extra ingredient - sodium hydroxide - is. Is it making the bubbles, and is it causing any other problem?
    36 x 18 oval pool, inground, plaster pool.
    27000 gallons
    1 hp pump. Sand filter
    Pool built in 1971.

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    Mod Squad jblizzle's Avatar
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    Re: Sodium hydrochlorite and sodium hydroxide in bleach

    Are you sure you are not buying some splashless Clorox bleach or something with additives? Those will cause foaming.
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    gtemkin's Avatar
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    Re: Sodium hydrochlorite and sodium hydroxide in bleach

    i don't think there's any difference at all. The MSDS for the Publix product lists Sodium Hydroxide in the same percentage as the Clorox products. Maybe the bottle labeling doesn't go into the same level of detail.
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    Re: Sodium hydrochlorite and sodium hydroxide in bleach

    Quote Originally Posted by jblizzle View Post
    Are you sure you are not buying some splashless Clorox bleach or something with additives? Those will cause foaming.
    Yes, it is splashless Clorox. I didn't know there were additives. I thought "splashless" had something to do with the shape of the bottle. I will stop buying splashless. Do you have any idea what the long term effects of those additives in the water will be?
    36 x 18 oval pool, inground, plaster pool.
    27000 gallons
    1 hp pump. Sand filter
    Pool built in 1971.

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    Re: Sodium hydrochlorite and sodium hydroxide in bleach

    Splashless bleach contains several surfactants including Cetyl Betaine, Sodium Xylene Sulfonate and Cocamidopropyl betaine. They are also used in personal care products.

    For small amounts, there should not be any long term adverse effects that you would have to be concerned about.

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    Re: Sodium hydrochlorite and sodium hydroxide in bleach

    Thanks for the info.
    36 x 18 oval pool, inground, plaster pool.
    27000 gallons
    1 hp pump. Sand filter
    Pool built in 1971.

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