what is the plaster like gunk that clogs my drainpipe?

Every couple of years the drain pipe 10' past the kitchen sink clogs with white plaster-like material. The cold water from the kitchen is is unsoftened well water high in minerals. Lately its been clogging more frequently.We try to put very little grease down the sink. I suppose the dishwasher is an exception. I expect that the soap that accompanies it should keep it from clogging.I have a rubber coupling in the basement through which I shove a 50' blade up the pipe to reach the clog and eventually smash it open. Then I pour sinkfulls of water down the sink which flushes the crud into a bucket (mostly). My least favorite job. RotoRooter will do it for $100/150 bucks. For years i thought it was congealed grease and not necessarily minerals plating out. None of the plumbing treatments ever worked, though recently I tried gallons of boiling hot water/hot vinegar and I think that helps though I suspect some of my joints gave up with this treatment. Yesterday I went in the crawl to fix a detached drain pipe which was also the clogged line and found the clog at that very spot. OK this was my least favorite job. As I dug the plaster out of the downhill side of the detached pipe, water came out (uphill?). Now I always wondered about the slope of this pipe being rather shallow, but water flowing up? hmmmmm... I have some chunks of the material and have subjected it to some of the treatments I've tried in the past. Vinegar does nada. Soap does nada. Enzymes do nada as well. Still there are things to try. Hot water hot vinegar. I will take it to the lab and see what I can find out myself. Is it organic? Inorganic. A mixture? I have the tools. Of course if I find something that works, it will probably kill all living things within a 3 mile radius of my house. Any suggestions? p.s the methylethylketone cleaner/pipe glue failed to hold though the pipes are popped together and some plumbers putty will have to work until i can psyche my self into going down there again. I suppose I should wait until my stiff neck and backache get better as well. Since I cleaned the clog at the source I suspect it may take a while longer to happen again.
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clipped

water, shake it and see what happens.
Are you on septic or sewer? If sewer, could something be backing up?
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Interesting suggestion. If only it were that! Septic. I tried boiling water and vinegar. Will let it sit awhile
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wrote:

Why would you put grease down the sink drain, on a septic system.
If so, build an independent grease trap.
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Plates are greasy after dinner dude. We don't pour naked or even clothed grease down the sink. We even wipe greasier things with paper towels before washing.
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Well it seems that the stuff is organic as it goes right into organic solvent (ethyl acetate, CHCl3) and not water, or even soapy water??. The NMR shows an oil-like pattern (vegetable?). Very little unsaturation. So all I have to do in the future is pour massive amounts of organic solvents down my kitchen sink. What could possibly go wrong....hahahahahahahaha....... smileyface here. (won't matter just you wait....;-))).........)
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finding z0 wrote:

come to mind: pigment settled out of paint, and pvc pipe dissolving. Someone in the household works with dust/powders and the stuff comes out in the laundry? I have no idea if/how/why pvc would dissintegrate....just a thought :o)
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The closest I could come to solvents down the drain would be boiling water/vingar to try to clear the clog. Some connections apparently didn't like that. The other source of stress would be the snake (blade) I pound thru the pipe to clear the clog.


see hydrogen atoms. The Medical profession adopted this tech and renamed it MRI (Magnetic Resonance Imaging) dropping the "nuclear" as it scared people. It doesn't refer to harmful 'radiation', but it does have to do with the nucleus of an atom. We spin a small sample of compund in a magnetic field. MD's spin the magnetic field around the sample (you). CHCl3, actually, CDCl3 (D-chloroform) is a common solvent used to dissolve sample for this procedure.

We are running a household with 2 daughters, one off to college, and we aren't home all day. Maybe someone is using our house as a drug factory during the day....? Wait! That might explain the $1000 in cash we find once a month on the kitchen table...hmmm.... When I first moved in there 23 yrs ago, my neighbor helped me clear that clog. He said that stuff is what happens to grease in the dark. He may be right. It only happens in the pipe from the kitchen sink, so trace food waste and bits of fat/oil must be the culprits. PVC wouldn't dissolve in solvents I used (in the lab) and would have a distinct pattern in an NMR spectra. We try not to put any amt of oil/ grease down the drain. There are dirty plates in the dishwasher, but you would expect the soap to keep the grease from gunking out. That is what soap does. I guess the slope of that pipe allows water to sit over long periods. I expect now that I've actually cleared the clog at the source, it won't form again as quickly. I mean that stuff was stuck to the top of the pipe as well and took a crow bar to break through. Cheers, and thanks for your interest.
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What do you use for dishwasher detergent? The white color of the clog is unusual for any grease or typical kitchen effluent.
R
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on 3/28/2008 7:32 PM finding z0 said the following:

Are you using granular dishwasher soap? That's what clogged my 4" septic tank pipe a couple of years ago. We switched to liquid soap after that.
--

Bill
In Hamptonburgh, NY
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roxisam had written this in response to http://www.thestuccocompany.com/maintenance/what-is-the-plaster-like-gunk-that-clogs-my-drainpipe-296647-.htm : We are having the exact issue. Did you ever find out what it was and how to solve or disolve it?
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replying to roxisam, FindingZ0 wrote:

http://www.thestuccocompany.com/maintenance/what-is-the-plaster-like-gunk-that-clogs-my-drainpipe-296647-.htm
Well it's been awhile and it is clogged again. Maybe 4 yrs or more.
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FindingZ0 wrote:

Lime deposits .
--
Snag



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On 5/20/2014 8:01 PM, Terry Coombs wrote:

TDD
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replying to The Daring Dufas , FindingZ0 wrote:

Probably hardened grease/lime mixture.
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On 5/21/2014 10:44 AM, FindingZ0 wrote:

TDD
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