Applied Chemistry

Hello everybody I need some help. The problem is production some chlorine gas as unwanted result of reaction during manufacturing main product. We can’t let it go to the air. So I search for any method to discard it in a safe way and reasonable price.I am not familiar with this. I think maybe we can pass it throughout something like limestone or gypsum (or any other material, I don’t know) and by this way turn it to safe material. So I ask for any way to do this.

My first post here...please be nice. I'm in the process of restoring/rebuilding a 1945-era nitrous oxide injection system designed in Germany during WW2. It uses an 85L insulated nitrous oxide tank which is not pressurized by the nitrous oxide evaporation itself, but uses compressed air for injection. The tank is rated at 8 atu, but a safety valve vents at 6 atu. The compressed air is stored in two 7L bottles at 150 atu and runs through a pressure reduction valve to bring it down to 4.5-5.5 atu before entering the tank. I have a stack of captured paperwork and notes regarding the system's design/use and one of the comments reads (basic translation): "Compressed ai…

i read this from internet as follows : disadvantage of activated carbon It does stop absorbing once its saturated.. and could start to realease other harmfull gases if not replaced. You cant just put a carbon block in your room and expect it to adsorb air, it needs a pumping system or filtering system of some sort. anyone here can tell me the above said is true ? * if it is, how to use a pumping system or filtering system ? * what is the simplest & most effective way to use activated carbon in bedroom ? * activated carbon is safe to put in bedroom while people are sleeping ? thanks.

I was going to try and start a business of selling ice cream. I figured out where to get the permits and everything however having an issue figuring out how to store the ice cream. I was going to try normal ice in a chest but I was afraid it would melt too quickly. I was going to try adding Dry ice to the ice chest and I looked up a video saying you can do this in an ice chest if you put a barrier. However I would be planning to keep move any ice cream I don't sell back to the freezer for storage and leave the chest with dry ice in my garage. I read that if inhaled dry ice can make you suffocate. So is this a reasonably safe idea? Any advice?

Could you kindly help me with this paragraph ? it reads: Not all lakes are equally affected by acid rain; the damage depends on the kind of bedrock present. Limestone neutralizes acids and has a buffering effect, but granite, composed of silicates, does not undergo any acid-base reaction. So a lake surrounded by granite rock is likely to suffer more damage from acid rain. But granite's lack of reaction with acid also means that gravestone made of granite are going to last longer than those made of limestone. i don't understand why it says 'but granite, composed of silicates, does not undergo any acid-base reaction, So a lake surrounded by granite rock is lik…

Are fuming acids safe to handle without a gas mask? Are glass stoppers good for fuming acids?

I've seen some...let's say "tutorials" about HNO3 vacuum distillation.The best one i think is the one from UncleFester's book. Now...i can't really find anything complete about the vacuum apparatus.I've seen how to "install" the glassware and i understand that but i couldn't find anything about the vacuum source and water source.How to install them?Can someone give me a "picture" or something please?UncleFester(it's just a nickname) said in his book that his method will give very concentrated HNO3.Since that book is about explosive and he is not stupid the acid should be pretty pure and good for anything else,not just explosives.

So...i came across this: .To this solution add *x-substance* in ½ gram amounts. I've never seen something like that before.Maybe it's not being used in my country...So,what's that"1/2 gram amounts"?How do i calculate that?

Hey guys can you help me out here... I created a battery out of these materials NH4Cl, MnO2, Zinc strips, carbon rod ... What i did is make a 4 M solution of NH4Cl, by putting 20 grams of it into 85 ml of water... then I dipped a felt pad into it Then I got 4 grams of the MnO2 and spread it onto the felt pad Then I wrapped it around a carbon rod Finally I covered the felt pad with multiple zinc strips ... Finally I got an average of a 1.5 volt from this, using a voltmeter, yet when I connect it to a light bulb, it doesnt flash, but flashed from a 1.2 volt battery ... Can anyone tell me why this happens ? ... Is it because the zinc strips ar…

Attila Csige R&D Engineer Apr. 18. 2014 4025 Linus Way, Carmichael, CA 95608 916-265-3653 Cell: 916-340-4814 Email: mc2inv@gmail.com Dear Sir/Madam. I am looking for two materials, first of all, I would like to know, under what name can I find them in the US and where can I purchase them. These two materials are being used to produce rammed graphite mold and for making carbon brush for electric motors. These materials are the follows: 1./ Coal tar pitch, binding pitch/impregnation pitch/bituminous pitch. This is essentially finely ground bitumen…

Please show and explain the work to figure out these questions 1. you react 3.50 g of solid sodium metal with water to produce hurdogen gas and sodium hydroxide. if at the end of the reaction there is 6.8 l of solution, what is the concentration of sodium hydroxide? Answer: 0.022 M NaOH 2. an excess of aqueous calcium chloride is reacted with 350 ml of .650 M aqueous sodium carbonate. if 10g of a solid is produced, what is the percent yield Answer: 43.8%

Hello friends! I have just installed a mixing vessel in which I use Diethyl Ether for mixing and washing an organic powder material. After washing/mixing for a few minutes I don't need to filter it and just want to evaporate the ether. The quantity of Ether in one batch is around 25 to 30 liters. When I start the mixer with slow rpm, the ether gets vaporize itself and I have installed an exhaust pipe from the top of mixer for travelling ether vapors. My product economics allow me to evaporate the ether instead of collecting/condensing its vapors for re-use. In simple words, I don't need the recycled ether at the end of my mixing process and just want to re…

Hello all, I'm a physiologist by trade but was recently assigned a chemical job, and my chemist supervisor is not willing to help..would really need help from anyone right now. - 1st, we mixed 1ml PBS solution into 9ml DD H2O and then 10ml of this solution was further mixed into 990ml DD H2O. (This final solution of PBS-DD H2O is hereby known as solution A) - Say we mixed 1ml of H2O2 (30%) with 99ml of the solution A creating solution B, - And then 1.5ml of solution B was mixed into 1.5ml of solution A, what is the concentration of H2O2 in the 3ml solution? Thank you very much in advance!! And sorry if im confusing and/or using inappropriate terms, im really no…

Hi all, So i have this 2.5L of H2O2 (30%) stock, and i know the M of H2O2 in the stock is 22.05M, How do i make 1M of H2O2 using a phosphate buffer solution (PBS)? Thank you in advance!

Hey everyone, Just did an experiment spectrophotometer looking at the effects of high temperatures and found something rather unusual. Its with the secondary azo dye; congo red with beta-glucans in the form of brewers yeast and oyster mushroom tablets BUT at temperatures of 50 and 70 degrees celsius. Repeated tries over 3 times and found that the higher the concentration of the tablets, the lower the absorbance read by the spectrophotoemeter. Essentially saying the presence of these dye complexes actually decrease absorbance. Can anyone help me out and give me a hypothetical or actual reason on why this happens please? Literature and Journals aren't really…

I had some water lube (used for water injection in performance engines) sent to a lab to be analyzed. I wanted to try to reproduce it. I was told they found this in it: poly (random-ethylenglycol-propyleneglycol) butyl ether (random-PEG-PPG) (~1100 center mass). I'm having a hard time finding anything like this close to that center mass. Is there a simpler term, or way to communicate to someone what I'm trying to find? And where would be the best place to locate and purchase? Any help would be very appreciated. My background is automotive, and I'm struggling locating suppliers. I'm not even 100% sure I can purchase it.

Hi All I am currently trying to analyse Rapramycin (Sirolimus).I have a DES and I am trying to extract the Raprmycin with DMSO and analyse it on the GCMS underivatised does anyone have any experience of this analysis Thanks

In 2007, the electronic industry transitioned from ~60/40 lead/tin to unleaded ~95/5 tin/silver/copper solder. Its different behavior posed some manufacturing headaches to get used to it, the soldering iron tips grew more deposits due to temperature increase from 190C to 230C and difficult to keep a tinned-'wetting' Decided to experiment, and had a soldering iron tip made of 24K gold. It was shiny and clean at the operating temperature, did not tarnish. But it dissolved and dripped together with the molten tin instantly. If the gold melting point is 1065C, how can that happen at 230C ? The puddle for shure contained the gold within the tin, liquid until solidif…

Theoretical mass percent of oxygen = (mass of 3 oxygen atoms)/(Mass of KClO3) Mass of ( K =39.10 Cl =35.45 O=16.00 ) So (mass of 3 oxygen atoms= 48.00)/(Mass of KClO3= 122.55) 48.00/122.55 = .3916x100=39.16% Right?

Good Evening Everyone!! I had a question about buying a used AA from eBay (since new ones are pretty expensive), and was wondering if anyone had any experience in buying a machine from an eBay vendor? Is possible to buy an AA, with minimal repair costs, and get one up and running? I thank you all ahead of time for your help.

Hello everyone, I have a few questions. First of all, I'm looking to melt Al2O3 in a flux in a crucible. I was wondering what would be the best combination of crucible lining and flux to do so at the lowest possible temperature. I know that it can be done in a platinum crucible quite easily but i don't exactly have 5 grand to throw down on a crucible so if anyone knows if this is possible or even theoretically possible in any less expensive apparatuses i would love to hear from you. Thanks a ton in advance.

Hello folks, As I think I mentioned in a previous post, I'm doing some science teaching at a local college. To achieve the unit descriptor for the module the students are working on, they need to, and I quote: "Investigate and explain the effects of one or more given factors, for example temperature, pH, substrate concentration or enzyme concentration on the functioning of enzymes." Should be easy enough. I want to run this practical, taken from the Nuffield Foundation website. That will hit the criterion for showing the effect of concentration on an enzyme-substrate based reaction. I will adapt the method to include a heated water bath to bring temperature int…

I've synthesized a handful of polyurethanes for my PI and run these samples through our TGA to determine the temperature at which the polymer is 90% of its original weight. My PI has now asked me to type up a summary of my findings and I'm not sure what to say about the 90% weight data. What is the significance of the temperature at which a polymer is 90% of its original weight? Thanks very much!

Is there a method for testing the age of paper compounds and organic samples to identify the year it was made after BP? I understand that in testing paper, a technician would identify the constituents on a historical reference standard for paper manufacturing -- essentially what was used in the manufacturing of paper when, to conclude the date of likely manufacture by cross-referencing. However, is there a test for charcoal, could the remaining ash be somehow tested for age, and if so, how? Cheers, R

I wanted to conduct my own station of self made fire works and wanted to know a way to create a windy made self propelled flammable or combustible material.