#now i've told you all i'm not obsessive about laundry. have a unrelated laundry opinion nobody asked for. i hate using vinegar

[beeseverywhen]

laundry and chemistry (starring: coin cleaning chemicals)

so i saw a post on here about laundry stripping and i wanted to try it out as i live somewhere with really hard water and can’t use very strong detergents day to day as i have very sensitive skin, so it seemed like an interesting thing to try and see what happened

(my suspicion is, it will leach the dye and i’ll have to redye the towels but thats no big issue as i kinda feel like a new colour anyway and am gonna make sure i only put the same colours in together during my trial)

anyway so immediately, i read the instructions and know that some adjustments are gonna have to be made, as borax isnt sold here (banned) so i’ll need a substitute for that at the least. the post directed me to use borax, laundry SOAP not detergent, and washing soda

now straight away i know i need to be on my guard here as a lot of stuff like this will have the same name as an american thing, but be a whole different product. (cleaning products are very different here, in part cause of different regulations, but i think a big factor is actually how we clean stuff? american washing machines tend to be a lot bigger, and with toploaders you can soak stuff/have cold cycles which allows you to use laundry bleach which isnt really used so much here) when i visit my family (non us country but american appliances are common) i have a complete nightmare finding like for like laundry stuff i’m not allergic too

anyway, i’m not so worried about allergies here as after the soak i’ll be rewashing anyway. so laundry SOAP i figure they mean plain soap, like castile soap; washing soda, i figure is likely the same as the soda crystals we use for cleaning, which brings me to the borax. now this i know i definitely cant get here, so i find out that i can make a borax substitute from soda crystals and bicarb of soda, as i’m already using the soda crystals, this seems like a good option.

so i go to buy myself some bicarb, and the shop are selling a product called ‘borax subsitute’ so i decide to pick up this and the bicarb and compare the two.

so soda crystals= sodium carbonate

bicarb of soda= sodium bicarbonate

borax substitute? that’s sodium sesquicarbonate

now i’ve got the borax substitute the bicarb seems a little redundant, however. if i’m mixing any kind of chemical i want to make sure i know what i’m going to end up making, and make sure i’m aware of any risks.

leading me on the the chemistry of this all. i find myself on a coin collecting site, where they explain that by mixing sodium bicarbonate (NaHCO₃) and sodium carbonate (Na₂CO₃) with water i can make sodium sesquicarbonate (Na₃H(CO₃)₂ ) AND CO₂ (so i need to ensure i have good ventilation!)

however i clearly have no need to make my own sodium sesquicarbonate as i have ready made borax substitute. which made me wonder, as i am using sodium sesquiocarbonate rather than borax (sodium tetraborate decahydrate) is the addition of soda crystals (washing soda) (sodium carbonate) now redundant? in fact, why did the original recipe say to mix washing soda and borax, when the washing soda is made of the same components as borax (minus the borate), is there a secondary reaction involved here, or is it a case of overengineering the recipe? and what about the laundry soap? will that react as well?

when i tried to investigate further i stumbled upon sodium percarbonate, otherwise known as oxygenated bleach, and made by mixing soda crystals and hydrogen peroxide. now, while i am willing to risk the dye in the towels somewhat by stripping, i’m not looking to bleach them, so i realise pretty soon that sodium percarbonate is to be avoided

i’m not intending to add any hydrogen peroxide (don’t have any, not very common here), but i do need to make sure that it isnt in any soap that i may use. i know that castille soap is made from olive oil, water, glycerine and potassium hydroxide (lye), so i need to check that mixing the lye and the sodium sesquicarbonate is not going to make anything a) dangerous b) bleaching (like sodium percarbonate). when i tried to research this, i came across a very alarming chemistry forum post in which someone mixed the two, and it lead to a exothermic (hot!) reaction producing a mystery chemical, which they poked??? noting ‘I touched the tip of my finger to it and didn't get any chemical burns.‘ i mean i know this isnt labwork, but have some awareness of health and saftey! don’t tocuh mystery chemicals.

anyway, this reaction turned out to be a one off, likely caused by the soap they’d made containing soy oil, which introduced acid in to the mix, luckily i am not at risk of this as i have a deadly allergy to soy, so no soy oil is in the building. anyway.

by this point i’m really starting to doubt the need for additional detergent, when there is already sodium sesquicarbonate and possibly, washing soda, in the mix. i’m also starting to think that american ‘laundry soap’ is not pure soap as i’d assumed, but maybe something else entirely. looking up american recipes, they all seem to mean something different by laundry soap and some of them are using detergents, honesly i’m still a little unclear on the benefit of combining washing soda and ‘borax substitute’ when washing soda is used to make ‘borax substitute, it seems to me that changing the proprotions of ingredients is unlikely to be helpful (or may be more helpful if it makes something better i guess, but this i doubt) i’ve been hoping i might come across an old web style forum or webpage, where a chemist might explain the benefit of using 3 ingredients rather than one, and explain what is being created when they are all mixed. as i’ve yet to find this, i’ve decided to go with equal amounts of all 3 and then i will experiment with removing one ingredient at a time and comparing the results, in the future.

by comparing the various laundry detergents in my house i have found that they actually vary quite a bit ingredients wise, even tho they are all sensitive non bio detergents, one of them includes optical brighteners including oxygenated bleach, so we will not be using that one with the coloured clothes (funnily enough this is actually the one that i avoid using and only use for rugs and sofa covers and stuff as my skin plays up with it. the other ones don’t seem to have anything major that’ll react with the rest, so lets see

i have also learnt that borate requires hot water to activate it, so the americans i saw using it without hot water, probably arent getting much benefit from it