Thiosulfate (IUPAC-recommended spelling; sometimes thiosulphate in British English) is an oxyanion of sulfur with the chemical formula S2O2−3. Thiosulfate also refers to the compounds containing this anion, which are the salts of thiosulfuric acid, e.g. sodium thiosulfate Na2S2O3. Thiosulfate also refers to the esters of thiosulfuric acid, e.g. CH3−O−S(=O)2−S−CH3. The prefix thio- indicates that the thiosulfate is a sulfate with one oxygen replaced by sulfur. Thiosulfate is tetrahedral at the central S atom. Thiosulfate salts occur naturally. Thiosulfate ion has C3v symmetry, and is produced by certain biochemical processes. It rapidly dechlorinates water and is notable for its use to halt bleaching in the paper-making industry. Thiosulfate salts are mainly used in dying in textiles and the bleaching of natural substances. Sodium thiosulfate, commonly called hypo (from "hyposulfite"), was widely used in photography to fix black and white negatives and prints after the developing stage; modern 'rapid' fixers use ammonium thiosulfate as a fixing salt because it acts three to four times faster. Some bacteria can metabolise thiosulfates. (Wikipedia).
Synthesizing Sulfur Dichloride: A Noxious Liquid That You DON'T WANT | Thionyl Chloride (Part 1)
Sulfur chlorides are both beautifully fascinating and horrendously vile. Today, we'll be synthesizing sulfur dichloride: a cherry-red liquid that is now my least favorite chemical to work with. Not only does it reek like death, but it also coats everything it touches in a layer of sulfur t
From playlist Chemical madness
Thiophosgene. Sulfur analogue of phosgene
Thiophosgene is a suflur analogue of phosgene. It's an orange-red liquid with strong smell! And this reagent is the highlight of today's video! ____________________________ 0:00 Thiophosgene presentation 0:30 Unpacking 1:35 Opening 1:45 Thiophosgene and moist air 2:10 Thiophosgene and mos
From playlist Unique chemicals!
In this video we are going to make mercury thiocyanate which is an interesting, highly toxic mercury salt when burned. Patreon: https://www.patreon.com/thyzoid Discord: https://discord.gg/UrjAt44HWH (Let me know if the discord link does not work) Instagram: https://www.instagram.com/thyzo
From playlist Organic Chemistry
Transesterification of Thionoesters
In this video, I discuss my first big project from my PhD - the transesterification of thionoesters. https://www.patreon.com/thatchemist Community Discord: https://discord.gg/QWNPETtPcZ -----------------------------------------------------------------------------------------------------
From playlist Chemistry Wisdom
Thulium - Periodic Table of Videos
Thulium, element number 69, is a hard one to isolate. More links in description below ↓↓↓ Support Periodic Videos on Patreon: https://www.patreon.com/periodicvideos A video on every element: http://bit.ly/118elements More at http://www.periodicvideos.com/ Follow us on Facebook at http:/
From playlist With Portuguese subtitles (Português) - Periodic Videos
Total Synthesis of Dysifragilone A, B and Dysidavarone C
An organic chemistry minilecture on the Total Synthesis of Dysifragilone A, B and Dysidavarone C by Yang-Ming Li, Yu-Tong Sun, Bi-Yuan Li, Hong-Bo Qin* Highlights include a reductive Heck coupling, palladium-catalysed α-arylation reaction and a dissolving metal enolate addition. NB: Reup
From playlist Total Synthesis
Making a Compound With a Great Smell: Benzoin
In todays video we are going to make some benzoin. Benzoin is an organic chemical with a great smell. It is made via the benzoin condensation of benzaldehyde (which is actually an addition reaction). As a catalyst I am using highly toxic potassium cyanide which is why you should not repeat
From playlist Organic Chemistry
Making Calcium Peroxide (CaO2)
In today’s video we are making calcium peroxide from sodium hydroxide, calcium chloride and hydrogen peroxide. Calcium peroxide is an oxidizing agent and it could be used to make oxygen by simply heating it. Our yield was low but we managed to make some. Just to put it somewhere: the produ
From playlist Inorganic Chemistry
Iodine and sodium thiosulfate redox titration calculations | A-Level Chemistry
I want to help you achieve the grades you (and I) know you are capable of; these grades are the stepping stone to your future. Even if you don't want to study science or maths further, the grades you get now will open doors in the future. Get exam ready for GCSE Maths https://primrosekitt
From playlist Oxford AQA International A-Level Chemistry | Revision Playlist
Titrating the eBay Ozone Generator (Ozone Ep2)
The 3g/h ozone tube works, but how much ozone does it actually make? And how do I use it without manually pumping it using my lungs? The ozone generator is titrated using iodide/thiosulfate. But if we can't even trust the Chinese eBay generator, can we even trust the Chinese eBay chemical
From playlist Ozone Generator
How to prepare the Iodine Clock Reaction
This is an interesting reaction where two clear solutions are mixed, then after a period of time a sudden and drastic color change occurs. I used the guide found at this link: http://www.nuffieldfoundation.org/practical-chemistry/iodine-clock-reaction
From playlist Syntheses and Demonstrations
Investigating How Concentration Affects Rates Of Reaction (Cross Experiment) | Chemistry Practicals
Hazel and Emilia demonstrate how concentration affects the rate of reaction using the cross experiment. Hydrochloric acid is reacted with sodium thiosulfate to produce a yellow precipitate of sulfur. The sulfur obscures a cross drawn on a white tile. By measuring how long it takes for the
From playlist Science Practicals //
6. Ellen Swallow Richards, Part 2
MIT 5.310 Laboratory Chemistry, Fall 2019 Instructor: John Dolhun View the complete course: https://ocw.mit.edu/5-310F19 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP63ZhyqhOGKbSBzcOovEbb6y In this second of three lectures in the Ellen Swallow Richards series, Dr. Do
From playlist MIT 5.310 Laboratory Chemistry, Fall 2019
GCSE Science Revision Chemistry "Required Practical 5: Rates of Reaction"
Find my revision workbooks here: https://www.freesciencelessons.co.uk/workbooks In this video, we explore the required practical on rates of reaction. We explore two different practicals that you need to know. We also look at the ideas of a hypothesis and reproducibility, which could be a
From playlist Chemistry Paper 2 Required Practicals
From playlist Organic Chemistry
IB Chemistry HL Chemistry lesson on Oxidation and Reduction
From playlist IB Chemistry
Making a deadly chemical in my parents' garage
Check out Displate for some awesome metal posters! https://displate.com/?art=5fce35d0f033f ------------------------------------------- When I started this channel, I worked in a lab. However, after I left that job I had to do all my chemistry and filming in my parents' garage. It was dang
From playlist Long Projects (25 min+)
Making Bromine From Pool Chlorine Tablets
In this video i am making bromine with TCCA (pool chemical), HCl and NaBr. Support my channel: https://www.patreon.com/chemiolis
From playlist Chemistry for home-labs and self-production
Ethyl Chloroacetate a Deadly Precursor to Many Pharmaceuticals
In this video ethyl chloroacetate which is a precursor to many pharmaceuticals will be prepared. We will make it by doing an esterification reaction involving chloroacetic acid, ethanol, sulfuric acid and a lot of patience. Ethyl chloroacetate is a toxic liquid used to make chloroacetamide
From playlist Organic Chemistry
How to Memorize The Polyatomic Ions - Formulas, Charges, Naming - Chemistry
This chemistry video tutorial explains how to memorize the polyatomic ions. It provides the name of the common polyatomic ions, the charges and their respective formulas as well. Common polyatomic ions include sulfate, nitrate, acetate, ammonium, hydroxide, sulfite, cyanide, phosphate, d
From playlist New AP & General Chemistry Video Playlist