Water softener...
would STPP benefit any in already softened water or would that just be overkill and oversuds?
would STPP benefit any in already softened water or would that just be overkill and oversuds?
First wash in TSPP
- Thread starter midcentnurse
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Got my STPP in the mail today. It's a bit more pure than the stuff in your pic, but most likely will have the same results. I'm doing a load now. Fyi, it seems to cut down the suds level, which is a plus in my book.
You can see the suds level in this video. Without the STPP, there are about twice the suds.
You can see the suds level in this video. Without the STPP, there are about twice the suds.
mamapinky
Well-known member
Benny how can you tell the purity of stpp by looking at it? Also congrats on your getting your stpp you will love it did you notice better rinsing? I enjoyed the video. Cheryl
Odoban
I checked the material safety data sheet and it is a quaternary ammonia-based disinfectant with some alcohol added to carry the eucalyptus oil fragrance.
I checked the material safety data sheet and it is a quaternary ammonia-based disinfectant with some alcohol added to carry the eucalyptus oil fragrance.
mralex
Well-known member
Just to be on the safe side, is this the right product for adding to the wash?
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Greetings!
Yes, it is, although food grade is a purer form than you need for laundry.
Yes, it is, although food grade is a purer form than you need for laundry.
As wonderful as
STPP is, if it is exposed to moisture, it turns pretty quickly into TSP - not that there's anything wrong with that, it's a wonderful cleanser. Just - it's available at every paint counter or major food ingredient distributor for a fraction of the cost.
It's really important to read and follow the storage instructions on STPP exactly.
STPP is, if it is exposed to moisture, it turns pretty quickly into TSP - not that there's anything wrong with that, it's a wonderful cleanser. Just - it's available at every paint counter or major food ingredient distributor for a fraction of the cost.
It's really important to read and follow the storage instructions on STPP exactly.
Hey Alex
That link you provided is for TSPP (tetrasodium pyrophosphate). I don't think this is exactly what you were looking for.
What is normally used for laundry is STPP (sodium tripolyphosphate).
I have bought it from this company. Now that phosphates have been recently removed from dishwasher detergents, my parents-in-law use it in their dishwasher with fantastic results.
That link you provided is for TSPP (tetrasodium pyrophosphate). I don't think this is exactly what you were looking for.
What is normally used for laundry is STPP (sodium tripolyphosphate).
I have bought it from this company. Now that phosphates have been recently removed from dishwasher detergents, my parents-in-law use it in their dishwasher with fantastic results.
Buy STPP - Sodium Tripolyphosphate UK - water softener - Sequestrant
Sodium tripolyphosphate / Pentasodium Triphosphate (STPP) 7758-29-4 Builder and water softener in detergents. Sequestrant for alkaline metals. Scale, corrosion, and lead control. Packs available 1Kg to 25Kg. Website prices include delivery and VAT
mistralni.co.uk
mralex
Well-known member
Thanks!
Marky_Mark - I actually had bookmarked the exact link ! Thank you for the reminder!
It's a bit more expensive than my Borax powder but I really want to try it!
Marky_Mark - I actually had bookmarked the exact link ! Thank you for the reminder!
It's a bit more expensive than my Borax powder but I really want to try it!
toploader55
Well-known member
Mr. Alex... You'll love it.
I don't use LCB anymore. STPP not TSPP
I don't use LCB anymore. STPP not TSPP
I ordered more STPP last night. According to my account history at ChemistryStore.com, 55 pounds lasts me close to 4 years. When you order, they award you bonus points. Last night I checked and I had $15 and change so I used that and it brought the price of the 55 lb quantity down to $100, or less than $2.00 a pound and $2 and change a month, which is not bad.
[this post was last edited: 8/13/2017-13:12]
[this post was last edited: 8/13/2017-13:12]
STPP<--->TSP
A good indicator of the status of stored STPP is whether or not the powder flows easily. If it does, it's probably NOT turned into STP. If it's as hard as a brick, it's probably turned.
The laws of physics stipulate that entropy is always increasing.
STPP is a higher energy molecule, and of lower entropy than TSP. So there is a tendency for it to degrade into the lower energy molecule. But I don't think it's as much of an issue for STPP that is properly stored as some here would have us believe.
Still planning on doing some testing with well water to see if my long term stored STPP is still active.
Also, a simple mnemonic to help remember which is which: The "T" stands for "Tri". The power of STPP is that it's got three (poly) phosphate groups in one molecule, hence "Tri Poly Phosphate". TSP has only one phosphate group, but three sodium atoms for every phosphate group. Thus, "Tri Sodium Phosphate".
A good indicator of the status of stored STPP is whether or not the powder flows easily. If it does, it's probably NOT turned into STP. If it's as hard as a brick, it's probably turned.
The laws of physics stipulate that entropy is always increasing.
STPP is a higher energy molecule, and of lower entropy than TSP. So there is a tendency for it to degrade into the lower energy molecule. But I don't think it's as much of an issue for STPP that is properly stored as some here would have us believe.
Still planning on doing some testing with well water to see if my long term stored STPP is still active.
Also, a simple mnemonic to help remember which is which: The "T" stands for "Tri". The power of STPP is that it's got three (poly) phosphate groups in one molecule, hence "Tri Poly Phosphate". TSP has only one phosphate group, but three sodium atoms for every phosphate group. Thus, "Tri Sodium Phosphate".
