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Inhalation: Take precautions to prevent a fire (e.g. Which of the following correctly lists the five atoms in order of increasing size (smallest to largest)? Strictly speaking the abbreviation would be MEKP, but the shorthand MEK is frequently found. Methyl ethyl ketone peroxide (MEKP) was used as a hardener. Press question mark to learn the rest of the keyboard shortcuts. New comments cannot be posted and votes cannot be cast. Which means "The top lager of the condensate....? The retted stem of the roselle plants was washed in running water and the fibers were removed manually. MEKP is methyl ethyl ketone peroxide, which is the catalyst for polyester resin. By using our Services or clicking I agree, you agree to our use of cookies. remove sources of ignition).Move victim to fresh air. Post your questions about chemistry, whether they're school related or just out of general interest. MEKP is a colorless, oily liquid whereas acetone peroxide is a white powder at STP ; MEKP is slightly less sensitive to shock and temperature, and more stable in storage. This quality is convenient for distillation of moisture in certain applications. But it can be used safely in dilute solutions, like benzoyl peroxide that many use to treat acne. Strictly speaking the abbreviation would be MEKP, but the shorthand MEK is frequently found. (surfing) The chemical methyl ethyl ketone peroxide which is used as a catalyst to harden the fibreglass resin in surfboard manufacture and repair. The fibers were then cleaned and dried in sunlight for 4 days. Join Yahoo Answers and get 100 points today. I never paid attention in chemistry but I know that the difference may be as simple as one atom bonding way over yonder instead of right here :p. MEK is methyl ethyl ketone. (organic compound) methyl ethyl ketone (surfing) The chemical methyl ethyl ketone peroxide which is used as a catalyst to harden the fibreglass resin in surfboard manufacture and repair. Unsaturated polyester resin was used as matrix, methyl ethyl ketone peroxide (MEKP) was used as a catalyst, and cobalt naphthenate was used as an accelerator. Still have questions? Methyl ethyl ketone is a nice smelling liquid often used as an organic industrial solvent. (If I’m remembering anything I’ve learned correctly at all). MEK is methyl ethyl ketone. watchbands, belts).Flush … Therefore there is one carbon on one side of the C=O (the methyl group) and there are two carbons on the other side (the ethyl group). MEK is a natural component of many foods, including apple juice, beans, chicken, honey and a variety of cheeses. The reaction of polyester will occur at the thickest cross section sending out a wave of heat, which cures resin to a solid glass-like hardness. History hasn't been kind to fighters on comeback trail, Obama crushed by Colbert in 'waste basket-ball', Chappelle's Netflix show removed at his request. These compounds have been out there a long time in the chemistry books, problem is that the internet has opened them to many folks who should not make or use them but sometimes do.. Also please don't use this sub to cheat on your exams!! Their respective properties are presented in a table below:. MEK will not work as a catalyst for resin. MEKP is an organic peroxide. The properties of sisal, banana, and naturally woven coconut sheath fiber (untreated) are shown in Table 3.1. This is apparently a thing now that people are writing exams from home. Methyl ethyl ketone is a nice smelling liquid often used as an organic industrial solvent. ? I'm an aircraft mechanic and I use both of these solvents interchangeably, on almost a daily basis. I assume MPK would be methyl propyl ketone. Therefore there is one carbon on one side of the C=O (the methyl group) and there are two carbons on the other side (the ethyl group). These were procured from Vasavibala Resins (P) Ltd, Chennai, Tamil Nadu-India. Synonyms for MEK are 2-butanone, ethyl methyl ketone, and methyl acetone. Call a Poison Centre or doctor if the victim feels unwell. We send our large stuff out to get repainted lol, MEK/MPK it's usually only used to soften up sealant, but you gotta be quick to wipe it off of any paint you might get it on or itll just liquify it, as I'm sure you already know. MEK is both less soluble and less volatile than acetone. Get your answers by asking now. Initialism. It reacts with the resin to turn it from a liquid to a solid (cure it). They both smell pretty similar, and I assume, based on the SDS, they're both just as toxic and gnarly. Roselle plants were collected from Selangor, Malaysia. I assume MPK would be methyl propyl ketone. Unlike Acetone, MEK forms an azeotrope with water, which means that methyl ethyl ketone and water mix together to form a constant boiling point that cannot be affected by distillation. MEK is methyl ethyl ketone. MEKP Ratio Chart Polyester Resin Polyester resin cures by an exothermic (heat) reaction created by promoters (cobalt & amine) and activator Methyl Ethel Ketone Peroxide (MEKP). Methyl ethyl ketone peroxide (MEKP) is an organic peroxide, a high explosive similar to acetone peroxide.MEKP is a colorless, oily liquid whereas acetone peroxide is a white powder at STP; MEKP is slightly less sensitive to shock and temperature, and more stable in storage.Depending on the experimental conditions, several different adducts of methyl ethyl ketone and hydrogen peroxide are … Roselle fibers were extracted using a water retting process over 14 days. It is a four carbon chain with an oxygen double bonded to the second carbon. It can be made when you mix MEK and hydrogen peroxide under the right conditions. Methyl ethyl ketone peroxide (MEKP) is an organic peroxide, a high explosive similar to acetone peroxide. MEKP is an oily colorless liquid, with a faint acetone-like smell (some sources say mint), slightly soluble in water, but miscible with various organic solvents. Cookies help us deliver our Services. Fox paid 7-figure settlement over bogus conspiracy story, Crucial new data on the efficacy of cloth masks, 'Voice' singer's tough night in Knockout Rounds, Snubbed former Nike exec auctioning rare Jordan shoes, David Maas, NBA halftime showman, dies of COVID-19, Education Dept. Please do not post entire problem sets or questions that you haven't attempted to answer yourself. Catalyst Chart for polyester resin, gel coat and vinyl ester marine resins. Why? It is a four carbon chain with an oxygen double bonded to the second carbon. Press J to jump to the feed. Given hypothetical elements Q, R, S and T that are found on the same period. MEK is a Food and Drug Administration (FDA)-approved indirect food additive for adhesives and polymers. It can be made when you mix MEK and hydrogen peroxide under the right conditions. The methyl ethyl ketone (MEK) peroxide which is easily made is an explosive when concentrated. The reaction of polyester will occur at the thickest cross section sending out a wave of heat, which cures resin to a solid glass-like hardness. Methyl ethyl ketone peroxide (MEKP) is an organic peroxide used in the marine industry. Catalyst Chart Volume of Catalyst to Be Used with Polyester Resins Methyl Ethyl Ketone Peroxide-Percent by Weight 1% 1.25% 1.5% 1.75% Resin(1) Volume Drop cc oz Drop cc oz Drop cc oz Drop cc oz 4 ounce 32 1-1/4 1/32 40 1-1/2 3/64 48 1-3/4 1/16 56 2 1/16+ About methyl ethyl ketone peroxide (MEKP) MEKP is a catalyst used in the composites industry for polyester and vinyl ester resins. Is this 'Charlie Brown' scene racially problematic? In biology class today my teacher played a porn video to show what they were talking about Should I talk to the principal to get her fired. MEKP Ratio Chart Polyester Resin Polyester resin cures by an exothermic (heat) reaction created by promoters (cobalt & amine) and activator Methyl Ethel Ketone Peroxide (MEKP). In this case, we again have one carbon on one side of the C=O, but now the other side has three carbons, which is called a propyl group. The methyl ethyl ketone (MEK) peroxide which is easily made is an explosive when concentrated. As a chemist working in the aerospace industry and specifically on coatings, why are you not following the spec and process for the job? Explosive Methyl ethyl ketone peroxide is a primary explosive, sensitive to shock and friction, though less so than TATP , with a detonation velocity of 5200 m/s. removes tool for defrauded students, CDC to shorten quarantine for those exposed to virus. ( Initialism ) ( head ) (organic compound) methyl ethyl ketone. These two are quite different. Follow up question: since MEK is smaller would it be a tad stronger in some since there would be more of a dipole? In that case, there is a five carbon chain with an oxygen double bonded to the second carbon.

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