Questions tagged [cleaning]

For questions about cleaning agents and methods used to remove dirt, stains, residues, and bad smells, including proper waste disposal. For particular questions about surfactants, use the [surfactants] tag.

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48 views

Washing stainless steel separator from organic residue

In my lab we have a stainless steel separator for liquid products of one of our hi-pressure catalytic testing assembly. It is a steel cylinder with two short pipes and one another short pipe with a ...
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1answer
121 views

Is triclosan harmful?

I keep hearing about this product known as triclosan, and that it is used in sanitizing soap. And I also heard that it is harmful, and causes some sort of muscle problems. However some people aren't ...
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1answer
212 views

Cleaning with Vinegar - what surfaces does it react badly with? Metal window sills ok?

I'm cleaning up some mould around the home and I have some substance on my window sills which I'm not quite sure if it's dirt or mould. I have read about using Vinegar to clean up mould, but an ...
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1answer
191 views

Is it considered safe to sonicate with flammable solvents?

I use a sonicator at work in a cleaning process. It involves sonicating acetone, NMP, and IPA. We would like to move forward with other flammables as well. We currently do the work in a hood, but no ...
2
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1answer
805 views

Rust removal ended with black oxide on the metal?

I have tried to remove common red iron rust from a small piece of metal that looks like steel. I submerged it into hot water with a bit of citric acid, and let it sit overnight. In the morning I ...
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1answer
1k views

What is the correct way to clean spectrophotometry cuvettes?

The lab I started working in has a spectrophotometer with cuvettes. The cuvettes need to be inspected and cleaned regularly. The senior people in the lab are in disagreement as to the correct ...
2
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1answer
113 views

Why do cookies prevent toothpaste from foaming?

If I eat cookies and subsequently brush my teeth such that there is still small amounts of cookie material stuck to my teeth, the toothpaste will not foam as well as usually, making the process less ...
2
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1answer
142 views

How can I clean up from electrolysis?

So, I was doing a little experimental electrolysis in my basement. I used 2 (presumably) galvanized steel screws as my electrodes and ran 5A through tap water with a lot of NaCl dissolved in it (to ...
2
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1answer
430 views

Autoclaving certain plastics?

My professor is letting me use the autoclave in the future, but I am a novice. I asked him what materials were safe to autoclave for my notes, materials meaning glass or plastic-ware. He stated, "...
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1answer
2k views

How to remove paraffin wax drop from cam lense glass?

When I put a my cellphone on a table for charging, some drops of paraffin wax were laying there which I couldn't see. After some time during charging, heat melted the paraffin wax and it stuck on the ...
2
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1answer
2k views

What is formed when hydrogen peroxide reacts with titanium?

I just got night contact lenses, and you are supposed to use a "one-step" cleaning solution to clean it over a period of six hours. At the bottom of the lenses case, there is a "titanium plate ...
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0answers
22 views

Cleaning of chlorbutyl plungers

This is my first post, so please bear with me. At work I have some chlorobutyl plungers that I need to clean from any residual material that might be left after production. A colleague of mine told ...
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0answers
947 views

Difference between cleaning products [closed]

I have a few cleaning products and after I looked on the ingredients, they feel pretty redundant: Bath cleaner: Less than 5% anionic tensides, anionic tensides, scent. Shower cleaner: Less than 5% ...
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0answers
818 views

What would be a safe/good surfactant for ultrasonic cleaning vinyl records + distilled water and isopropyl alcohol

Title pretty much says it all besides the type of records I believe are pvc (60s - current, someone correct me if there may be other materials but I absolutely don't have any shellac records) and I ...
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0answers
814 views

Why does the black powder that comes off aluminum pans behave the way it does?

When I wet an aluminum pot or cookie sheet and then dry it with a towel, it creates dark gray marks on the towel. This happens more if the aluminum is a little rough. It seems that there's a fine ...
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0answers
227 views

How paper-tag survive in the dry-cleaning process?

This prevent the clothes from being ruined by ink on the paper tag. To put the garments attached with this paper through the whole process of dry-cleaning, I have the questions listed below paper ...
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3answers
5k views

How can I clean solid sulfur and its oxides from test tube?

I was experimenting with sulfur few years ago. The test tube I used for that purpose has still sulfur stuck onto it. I was searching for a way to dissolve it. I found an idea to try warm acetone. ...
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3answers
19k views

Why hot water is more effective than cold water in cleaning

Today while washing curtains, my mother dipped them in hot water(containing detergent) for an hour and then washed them.When i asked her that why she done that,her answer was simple(it will make the ...
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1answer
465 views

When we add soap in low concentrations to water it reduces the surface tension. Why? What is the purpose of this?

I understand how soaps lower the surface tension of water but I don't know what the purpose of this is. How does this help with cleaning, removing stains etc?
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1answer
103 views

What is the grey film/black sludge from mercury? How to remove it?

How to remove it? Any other simple method apart from distillation. I have a small container of mercury that I’ve collected over the past decade. I opened the container after a few years now and I ...
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3answers
798 views

Best way to clean a gold-plated yoyo bearing?

I have a gold-plated yoyo bearing which needs cleaning. Most people clean regular non-gold-plated bearings with mineral spirits (naphtha), lighter fluid (hexane/heptane), and acetone, but these gold ...
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1answer
2k views

Isopropyl alcohol to clean germs on countertops

My wife recently found some website recommending mixing 91% isopropyl alcohol, white vinegar, water, and corn starch and using it to wipe down countertops. This would be where we put our raw chicken ...
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1answer
55 views

Eco Friendly Cleaning Solution [closed]

I would like to find a solution that can kill roof algae, fungus, mold, mildew effectively without using environmentally unfriendly products but don't know enough about chemistry to make a solution ...
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1answer
1k views

How to dissolve the build-up from a paraffin based oil?

I have a CNC lathes that use "oil" for cutting fluid during the machining of mostly metal materials. Typically a heavy paraffinic based cutting oil (petroleum distillate) is used during machining. ...
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2answers
6k views

Cheap and not messy solvent for motor oil

I have an old oil cooler of an old Volkswagen engine (the type where the oil itself is cooled, and uses no water) stained with decades of usage. If I pass water through it, it comes out clear, but if ...
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1answer
116 views

How to remove wash anthracene oil/creostae oil from stainless steel tanker?

I once loaded anthracene oil/creosate Oil in my stainless steel tanker and I had to transport it to some factory. The material was inside the tanker for throughout the journey that was of around 8 ...
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1answer
91 views

Removing PTFE marks on glass bottles after using magnetic stir bars

I am using magnetic stir bars to agitate solutions for 4 weeks at a time. I have noticed at the bottom of the glass bottles that white marks have accumulated where the stir bar spins. Even with ...
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1answer
62 views

Ultrasonic bath operation time

I use an ultrasonic bath in my lab for some chemical treatment of samples. It usually takes several hours with short breaks or even without it. I have a timer at the bath with a limit 90 min. So I ...
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0answers
26 views

What would be the best combination to clean polyurethane [closed]

I am struggling to find the best composition to clean old golf balls and make them white again. The balls are made out of different types of coating, e.g. polyurethane or an isomer. I have found ...
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0answers
166 views

what is the relationship of Salt, White Vinegar and Water to create 1 liter of Hypochlorous Acid [closed]

What is the relationship of Salt, White Vinegar, and Water to create 1 liter of Hypochlorous Acid (for disinfecting and cleaning purposes), and how much time do I have to put it under a 9v battery ...
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0answers
97 views

Why is my washing powder not to be used for pre-wash?

Apologies but I can't find a more suitable stack exchange website to ask this question. I feel the technical answer is chemical in nature so I landed here. For at least the past two years (and on-...
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0answers
54 views

What neutralizes the active ingredients (napthalene and/or paradichlorobenzene) in moth balls? [closed]

Question: What is effective in removing residual moth ball smell from inside a car? Issue: We used moth balls in our car to rid it of mice. (Never do this; it does not work.) We removed the moth ...
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1answer
58 views

Function of 'organic' vs regular pipe cleaner

Recently, I needed to buy some pipe cleaner, as sometimes even with care hair and other detritus gets lodged so deep down the shower drain that it is not possible to get it out. I always try to avoid/...
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0answers
33 views

Homemade Fabreze mystery substance

My wife made a cleaning solution of isopropyl alchohol (1200mL), baking soda (100 mL) and distilled water(2400 mL). She first mixes baking soda with warm water till it dissolves. Then adds the ...
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0answers
3k views

Removing Lysol from oven [closed]

My son put Lysol in the oven, how do I make it safe again? I really don't want to blow up my house over a chicken pot pie. I have new recipe that I really want to try out and it does not include ...
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0answers
937 views

Crusty white armpit stain that can't be removed by washing

Some of my t-shirts (the ones that are 100% cotton) started developing this strange armpit stain: it makes the fabric feel brittle and crusty around it; it can't be washed off with water and ...
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0answers
202 views

Is there a chemical that will etch antimony but not stainless steel?

I am working with ultra high vacuum equipment made out of stainless steel that has been contaminated with a number of metals, but in particular Antimony. We'd like to do some machining of the ...
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1answer
881 views

How to remove epoxy on clothes?

How to remove epoxy on clothes in the perspective of chemistry? More precisely in my case, how to remove the hardener of epoxy, which consists of two components: hardener and resin. The clothes is ...
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1answer
44 views

Why does saliva clean so well?

I notice that saliva seems to clean well, much better than plain water. For example, tar spots on the car can be difficult to get off. I typically use really powerful solvents to get them off, like 95%...
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5answers
119 views

How can I clean stained garden rocks?

I have some white garden pebbles which are now yellow with trace of rust. I have tried to soak them in bleach diluted with water without success. Could I receive suggestions of an appropriate ...
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1answer
174 views

Cleaning with sodium bicarbonate

I have a small metal, most likely silver, cross. It is an old object and has turned dark. In order to clean it, my mother told me to boil it for a few minutes in water containing sodium bicarbonate. ...
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1answer
47 views

What chemical can be used for getting rid of hard water spots on cars?

Most water spot removers available on Amazon or automotive stores are just fine abrasives which remove a small amount of your car's clearcoat every time you use them. I'm looking for a chemical which ...
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1answer
2k views

Methanol vs Ethanol Substrate cleaning

We have to clean substrates, often made of STO or MgO, before PLD for thin film growth. Previously we would use ethanol for sonication to clean the substrates. We recently ran out of ethanol but have ...
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1answer
190 views

Is *rinsing* (after washing) with cold water is as efficient as rinsing with hot water?

Let say I have, a dishwashing soap, plenty of cold water (5 °C) and only have 2 L of hot water (60 °C) to clean a t-shirt with oil stains. Should I use the 2 L to wash the t-shirt and then the cold ...
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2answers
1k views

How to clean a copper pan from black burned fat chemically?

I have several copper pans which I use daily. I don’t have the time to always clean them. Now they have a thick crust of black burned fat. When I wash it with dish soda, nothing changes. And I don’t ...
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1answer
201 views

How does Drain opener decompose?

I used drain opener (sodium hydroxide and sodium hypochlorite) in an RV and accidentally caused it to drain out (mixed about 1:10 with water) onto concrete below. There is a fairly strong smell. ...
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1answer
1k views

How to determine the products of a redox reaction

I'm doing a paper on water treatment methods, and in one section, I'm describing how a nearby water treatment plant is removing Trichloroethylene ($\ce{C2HCl3}$) from water by oxidizing it using Ozone ...
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2answers
2k views

How do I clean a silk tie at the knot?

I would like to know how I can clean a silk tie at the knot. I presume it got filthy, over time, due to "fatty" fingers. I am looking for answers either based on 1) good theory or 2) personal ...
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0answers
42 views

Isopropyl Alcohol Vs Acetone for Dissolving Organic Contaminants on PCB

Acetone is widely used in the labs as a solvent to clean the vials and tubes as it is good solvent for organic materials. While Isopropyl alcohol is used as a rubbing alcohol for cleaning contaminants ...
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0answers
13 views

Is common cleaning borax an octahydrate or a decahydrate? [duplicate]

I just got some borax to clean up, whether it needs it or not (coronavirus shutdown is driving me crazy...) When I looked it up online, half the places called it a decahydrate and the other half said ...