Can I buy some Sodium Hypochlorite from somewhere?

[Waihou Thumper]

I got some of that 30 seconds stuff and it is okay, but was wondering if I could perhaps obtain it in a 20 litre container from somewhere and a little more concentrated?
I am aware of HSNO regulations and my responsibilities...
Anyone know?

[slofox]

Any chemical company would have this in stock. I used to buy it in bulk from Hamilton Chemicals for tray sterilizing when I had a seedling nursery. You could try a rural supply company too - maybe.

[Waihou Thumper]

Any chemical company would have this in stock. I used to buy it in bulk from Hamilton Chemicals for tray sterilizing when I had a seedling nursery. You could try a rural supply company too - maybe.

Concentrated enough to dilute and use....?
The price of 30 seconds is okay but I am sure I could make a 20 litres go further...:)

[skippa1]

I got some of that 30 seconds stuff and it is okay, but was wondering if I could perhaps obtain it in a 20 litre container from somewhere and a little more concentrated?
I am aware of HSNO regulations and my responsibilities...
Anyone know?
Pool shops?

[Blackbird]

If you know anyone who works at the Kinleith pulp and paper mill near Tokoroa, employees used to be able to buy 20 litre reject (for colour normally) full strength hypo. I retired from there 6 years ago so don't know what the current status is, but it was really cheap.

[slofox]

Concentrated enough to dilute and use....?
The price of 30 seconds is okay but I am sure I could make a 20 litres go further...:)



It is more concentrated than your regular supermarket bleach. I don't remember the exact strength but it was way cheaper for our purposes.

[fridayflash]

cheap supermarket bleach is wayyyy stronger than 30 seconds (which also has a small amount of soaping agent added) but the best way is a twenty
litre or pool chlorine, you just gotta work out your mixing ratio as its rather strong

[Winston001]

What are you using it for? I've used 30 Seconds Outdoor Spray and Walk Away concentrate and have been pleasantly surprised with its results. The main reason was to kill lichen on our tile roof. It took a couple of months to actually kill and four months before the dead lichen fell off but it certainly did the job.

My memory is that the outdoor stuff has another active chemical in it but can't find any info.

I understand the problem with bleach is that it is volatile. It breaks down in sunlight and also evaporates fairly quickly.

[Edbear]

Concentrated enough to dilute and use....?
The price of 30 seconds is okay but I am sure I could make a 20 litres go further...:)



Kinleith mill. I used to get it from there.

[Edbear]

If you know anyone who works at the Kinleith pulp and paper mill near Tokoroa, employees used to be able to buy 20 litre reject (for colour normally) full strength hypo. I retired from there 6 years ago so don't know what the current status is, but it was really cheap.

I didn't get it from you, did I? It was back in the '90's.

[R650R]

cheap supermarket bleach is wayyyy stronger than 30 seconds (which also has a small amount of soaping agent added) but the best way is a twenty
litre or pool chlorine, you just gotta work out your mixing ratio as its rather strong

And even stronger than that is a product called Chlorogen, white bottle with blue and red label. Cheap as prob cause many don't realise what it is.
BTW what on earth are you cleaning???

[Oakie]

So what are you using it for?

From Wiki:

Uses
Bleaching

Household bleach is, in general, a solution containing 3-8% sodium hypochlorite and 0.01-0.05% sodium hydroxide; the sodium hydroxide is used to slow the decomposition of sodium hypochlorite into sodium chloride and sodium chlorate.[10]

In household form, sodium hypochlorite is used for removal of stains from laundry. It is particularly effective on cotton fiber, which stains easily but bleaches well. Usually 50 to 250 mL of bleach per load is recommended for a standard-size washer. The properties of household bleach that make it effective for removing stains also result in cumulative damage to organic fibers, such as cotton, and the useful lifespan of these materials will be shortened with regular bleaching. The sodium hydroxide (NaOH) that is also found in household bleach (as noted later) causes fiber degradation as well. It is not volatile, and residual amounts of NaOH not rinsed out will continue slowly degrading organic fibers in the presence of humidity. For these reasons, if stains are localized, spot treatments should be considered whenever possible. With safety precautions, post-treatment with vinegar (or another weak acid) will neutralize the NaOH, and volatilize the chlorine from residual hypochlorite. Old T-shirts and cotton sheets that rip easily demonstrate the costs of laundering with household bleach. Hot water increases the effectiveness of the bleach, owing to the increased reactivity of the molecules.

Stain removal

Sodium hypochlorite has destaining properties.[11] Amongst other applications, it can be used to remove mold stains, dental stains caused by fluorosis,[12] and stains on crockery, especially those caused by the tannins in tea.
Disinfection
See also: Hypochlorous acid

A weak solution of 2% household bleach in warm water is used to sanitize smooth surfaces prior to brewing of beer or wine. Surfaces must be rinsed to avoid imparting flavors to the brew; the chlorinated byproducts of sanitizing surfaces are also harmful. The mode of disinfectant action of sodium hypochlorite is similar to that of hypochlorous acid.

US Government regulations (21 CFR Part 178) allow food processing equipment and food contact surfaces to be sanitized with solutions containing bleach, provided that the solution is allowed to drain adequately before contact with food, and that the solutions do not exceed 200 parts per million (ppm) available chlorine (for example, one tablespoon of typical household bleach containing 5.25% sodium hypochlorite, per gallon of water). If higher concentrations are used, the surface must be rinsed with potable water after sanitizing.

A 1-in-5 dilution of household bleach with water (1 part bleach to 4 parts water) is effective against many bacteria and some viruses, and is often the disinfectant of choice in cleaning surfaces in hospitals (primarily in the United States). The solution is corrosive and needs to be thoroughly removed afterwards, so the bleach disinfection is sometimes followed by an ethanol disinfection. Liquids containing sodium hypochlorite as the main active component are also used for household cleaning and disinfection, for example toilet cleaners.[13] Some cleaners are formulated to be thick so as not to drain quickly from vertical surfaces, such as the inside of a toilet bowl.
Deodorising
[icon] This section requires expansion. (June 2013)

Sodium hypochlorite has deodorising properties[11]

Water treatment

In drinking water systems, swimming pools, etc., sodium hypochlorite is widely used for chlorination. Hypochlorites are an alternative to chlorine gas, which is difficult to handle in many contexts. Also, accidents involving chlorine gas are more serious than accidents involving hypochlorites.[citation needed] Chlorination usually produces small quantities of harmful byproducts. Hypochlorites are very similar to chlorine gas in this regard.

Sodium hypochlorite solutions have been used to treat dilute cyanide wastewater, such as electroplating wastes. In batch treatment operations, sodium hypochlorite has been used to treat more concentrated cyanide wastes, such as silver cyanide plating solutions. Toxic cyanide is oxidized to cyanate (OCN−) that is not toxic, idealized as follows:

CN− + OCl− → CNO− + Cl−

Sodium hypochlorite is commonly used as a biocide in industrial applications to control slime and bacteria formation in water systems used at power plants, pulp and paper mills, etc. in solutions typically of 10-15% by weight.

Endodontics

Sodium hypochlorite is now used in endodontics during root canal treatments. It is the medicament of choice due to its efficacy against pathogenic organisms and pulp digestion. In previous times, Henry Drysdale Dakin's solution (0.5%) had been used. Its concentration for use in endodontics today varies from 0.5% to 5.25%. At low concentrations it will dissolve mainly necrotic tissue; whereas at higher concentrations tissue dissolution is better but it also dissolves vital tissue, a generally undesirable effect. It has been shown that clinical effectiveness does not increase conclusively for concentrations higher than 1%.[14]
Nerve agent neutralization

At the various nerve agent (chemical warfare nerve gas) destruction facilities throughout the United States, 50% sodium hypochlorite is used as a means of removing all traces of nerve agent or blister agent from Personal Protection Equipment after an entry is made by personnel into toxic areas. 50% sodium hypochlorite is also used to neutralize any accidental releases of nerve agent in the toxic areas. Lesser concentrations of sodium hypochlorite are used in similar fashion in the Pollution Abatement System to ensure that no nerve agent is released in furnace flue gas.
Reduction of skin damage

Dilute bleach baths have been used for decades to treat moderate to severe eczema in humans,[15][16] but it has not been clear why they work. According to work published by researchers at the Stanford University School of Medicine in November 2013, a very dilute (0.005%) solution of sodium hypochlorite in water was successful in treating skin damage with an inflammatory component caused by radiation therapy, excess sun exposure or ageing in laboratory mice. Mice with radiation dermatitis given daily 30-minute baths in bleach solution experienced less severe skin damage and better healing and hair regrowth than animals bathed in water. A molecule called nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kB) is known to play a critical role in inflammation, ageing and response to radiation. The researchers found that if NF-kB activity was blocked in elderly mice by bathing them in bleach solution, the animals' skin began to look younger, going from old and fragile to thicker, with increased cell proliferation. The effect diminished after the baths were stopped, indicating that regular exposure was necessary to maintain skin thickness.[15][17]

[Oakie]

What are you using it for? I've used 30 Seconds Outdoor Spray and Walk Away concentrate and have been pleasantly surprised with its results. The main reason was to kill lichen on our tile roof. It took a couple of months to actually kill and four months before the dead lichen fell off but it certainly did the job. .

Sulphate of Iron! Sure knocks the snot out of moss in the lawn within about a day. Might stain the tile roof though.

[Waihou Thumper]

What are you using it for? I've used 30 Seconds Outdoor Spray and Walk Away concentrate and have been pleasantly surprised with its results. The main reason was to kill lichen on our tile roof. It took a couple of months to actually kill and four months before the dead lichen fell off but it certainly did the job.


Yep, that works fine, just thought there may be cheaper alternatives for bulk jobs...


And even stronger than that is a product called Chlorogen, white bottle with blue and red label. Cheap as prob cause many don't realise what it is.
BTW what on earth are you cleaning???

Chlorogene....cheaper? I don't think so...


So what are you using it for?


Paths, floors, roofs, getting the dog smell out of the yard, general sanitising...

[Robbo]

Yep, that works fine, just thought there may be cheaper alternatives for bulk jobs...



Chlorogene....cheaper? I don't think so...



Paths, floors, roofs, getting the dog smell out of the yard, general sanitising...

Select Chemicals in Bryant Road Te Rapa, Hamilton sell it in 20 ltr containers. Depending on what you are using it for it can be diluted down a further 50% with water and will achieve the same results as Thirty seconds at a fraction of the price.

[Waihou Thumper]

Thanks, will give it a go....