is monoammonium phosphate corrosive

} This website or its third-party tools process personal data (e.g. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise. The company offers monoammonium phosphate, which is … In addition to calcium levels, ammonia and phosphate levels should be monitored. Why are BC agents less corrosive to aluminum than ABC agents? Polymer coatings might solve this problem; if you need one, let us know. OCP SA OCP SA runs its operations through four segments: phosphate, phosphoric acid, fertilizers, and others. 7722-76-1:H3N.H3O4P, Phosphoric acid, monoammonium salt, ABC, ABC (fire extinguisher), ADP, ADP (filter), Ammonium biphosphate, Ammonium diacid phosphate, Ammonium dihydrogen orthophosphate, AMMONIUM DIHYDROGEN PHOSPHATE, AMMONIUM DI-HYDROGEN PHOSPHATE, Ammonium dihydrogen phosphate ((NH4)H2PO4), ammonium dihydrogenorthophosphate, Ammonium dihydrophosphate, Ammonium hydrogen phosphate … (MAP) Monoammonium Phosphate Section 4. With any moisture content at all, I suppose I would see if there was a difference in the pH of the two mixtures, since Aluminum is amphoteric. • Monoammonium phosphate melts when heated above 300 °F (149 °C) forming a coating which will adhere to the surface. Monoammonium phosphate also called Mono ammonium phosphate or Ammonium dihydrogen phosphate, NH4•H2PO4, is formed when a solution of phosphoric acid is added to ammonia until the solution is distinctly acid. ABC dry chemical is usually a mix of monoammonium phosphate and ammonium sulfate , the former being the active one. Ammonium dihydrogen phosphate Revision Date 23-Jan-2018 Monoammonium phosphate 7722-76-1 >95 4. Consult'g, Train'g, Software Environmental Compliance. ... Mono ammonium phosphate 12-52 (MAP) Registration dossier . Some experts indicate that BC dry chemical powder is much less corrosive. Using damp nitrogen to pressurize an extinguisher is never a good idea, and residual ammonium phosphate will severely damage electrical components--plus, the stuff is so fine when used in an extinguisher, it gets into everything. Typical BC agents are 93% potassium bicarbonate, 4% muscovite mica, 4% magnesium aluminum silicate (attapulgite clay), 1% methyl hydrogen polysiloxane and 1% … © 2020 Copyright Practicalmachinist.com. The coating will continue to adhere even after the surface has cooled. monoammonium phosphate. "text": "#237afc" Hopefully someone will correct me if I am wrong, but I believe Class B-C extinguishers contain baking soda,sodium bicarbonate NaHCo3, non-corrosive; ABC extinguishers contain monoammonium phosphate (NH4H2PO4), which is corrosive in presence of moisture. The latest industry news—straight to your inbox. monoammonium phosphate phosphoric acid ph ammonium hydroxide product Prior art date 1962-07-02 Legal status (The legal status is an assumption and is not a legal conclusion. LD50 (rat, oral) > 5000 mg/kg bw. Registration dossier . C&L Inventory . Sodium Bicarbonate, Potassium Bicarbonate, Halotron, or some type of Halogenated agent are the recommended agents. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. Production. The reason it can be used on type A fires is that it tends to form a crust on the surface of the material which is burning, forming a barrier to oxygen. 77, No. Monoammonium Phosphate (7722-76-1) Persistence and degradability Biodegradability in water: no data available. Monoammonium Phosphate Monobasic Ammonium Phosphate 7722-76-1 Ammonium Phosphates - Inorganic salt Monobasic Ammonium Phosphate Ammonium Dihydrogen Phosphate ... May be corrosive to iron and mild steels, aluminum, zinc and copper. It is a monoammonium phosphate based dry chemical containing chemical additives, and produced by an exclusive chemical process. Will not occur. ammonium phosphate. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. ammonium phosphate, tribasic. 58 / Monday, March 26, 2012 / Rules and Regulations 05/15/2015 EN (English US) 5/1 11-52-0 Monoammonium Phosphate (7783-28-0) ATE US (dermal) 5000.000 mg/kg body weight Skin corrosion/irritation : Not classified pH: 7.7 - 8.1 (5 %) Acidic solutions on aluminum, especially stressed aluminum, tend to corrode the metal. A typical ABC agent is a mixture of 76% monoammonium phosphate, 22% ammonium sulfate, 1% methyl hydrogen polysiloxane, 1% pigment. "background": "#237afc" All Rights reserved. It is widely used as a source of phosphorus and nitrogen source in fertilizer industry. Product identifier Product Identity Monoammonium Phosphate (M.A.P.) • Monoammonium phosphate is slightly acidic in the presence of moisture resulting in mild corrosive properties. "palette": { All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. Monoammonium phosphate is soluble in water and crystallizes from it as the anhydrous salt in the tetragonal system, as elongated prisms or needles. When ammonia is added to phosphoric acid that hasn’t been heated, it produces monoammonium phosphate (11-52-0) or diammonium phosphate (18-46-0), depending on the ratio of the mixture. Identification 1.1. ammonium phosphate, monobasic. The material is not corrosion proof, but useful in certain cases. ammonium phosphate ((NH4)3PO4) ammonium phosphate, dibasic. Sign up for our eNewsletter now to stay in-the-know. Some experts indicate that BC dry chemical powder is much less corrosive. triammonium phosphate. Typical BC agents are 93% potassium bicarbonate, 4% muscovite mica, 4% magnesium aluminum silicate (attapulgite clay), 1% methyl hydrogen polysiloxane and 1% pigment (OR) 90% sodium bicarbonate, 5% mineral silicates and 5% stearates. Substance name : (MAP) Monoammonium phosphate Product code : MAP, MAPFR, MAPOS, Formula : (NH 4)H 2 PO 4 Synonyms : Ammonium dihydrogen phosphate / Ammonium dihydrogenorthophosphate / Ammonium phosphate (monobasic) / Phosphoric acid, monoammonium salt / Ammonium dihydrogenphosphate / Ammonium phosphate / Ammonium phosphate, monobasic / The P present in these two fertilizers is in the orthophosphate form. We'll bring you the most relevant peer-to-peer conversations happening in the trade and tips and tricks to help you get the job done. }); Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. Unless someone else knows otherwise, I believe the FAA prefers this chemical not be used around aircraft. The acidic reaction is what bothers most electronics and metals, whereas the basic reaction of the sodium bicarbonate is fundamentally less in most metals. TVA developed two minor modifications in their DAP process to produce monoammonium phosphate (MAP). Monoammonium phosphate (MAP) is a widely used source of phosphorus (P) and nitrogen (N). window.addEventListener("load", function(){ ©1995-2020 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy How Google uses data when you visit this site. SDS Revision Date: 02/21/2017 Page 1 of 9 1. If material has been swallowed and the exposed person is conscious, give small quantities of water to First-aid measures Wash out mouth with water. new LazyLoad(); Get medical attention if symptoms occur. Editor's note: Some chemicals in this database contain more information than others due to the original reason this information was collected and how the compilation was accomplished. Remove dentures if any. "button": { } Keep in mind the principle ingredient in a BC extinguisher is sodium bicarbonate, baking soda. If you need a product/service, please check these Directories: Jobshops Capital Equip. Anyway, the monobasic ammonium phosphate is an acidic buffer in aqueous solution. -- a roundtable with a seat for you. & Install'n Chemicals & Consumables elements_selector: "iframe" Unlike phosphoric acid, Haifa MAP Mono Ammonium Phosphate DIY Hydroponic Fertilizer is moderately acidic, thus it does not form corrosion on fertilizer pumps or irrigation equipment. Monoammonium phosphate Valid: 09/21/2011: ERNS Monoammonium orthophosphate Valid: ECOTOX Phosphoric acid, Monoammonium salt Unknown: HPVIS Phosphoric acid, monoammonium salt Valid: CAMEO Chemicals Ammonium phosphate Valid: GCES Monoammonium phosphate Valid This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. The process for manufacturing MAP is relatively simple. Phosphoric acid, monoammonium salt . primary ammonum phosphate. })}); Not a lecture hall ! Monoammonium phosphate is often used in the blending of dry agricultural fertilizers. Superphosphate is soluble in water and acts as a carrier of phosphorus needed by plants. (adsbygoogle = window.adsbygoogle || []).push({}); Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. Relevant identified uses of the substance or mixture and uses advised against window.cookieconsent.initialise({ ABC Dry Chemical Fire Extinguisher Powder Corrosive? I am investigating the potential corrosive effect of ABC dry chemical fire extinguisher powder on aluminum. Not established. Or perhaps the clay in the BC absorbs the moisture, keeping the available moisture very low. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. The mix between the two agents is usually 40–60%, 60 … This compares to a ratio of about 1.4 for DAP. a type C fire makes it a type A or B. "background": "#fff", Surface Conversion Sciences - Bellefonte, Pennsylvania, ©1995-2020 finishing.com, Inc., Pine Beach, NJ, How Google uses data when you visit this site. diammonium phosphate. monobasic ammonium phosphate. These leave behind a corrosive powder, so it’s important to clean up dry chemical fire extinguisher residue quickly, especially if it has come in contact with metal surfaces. Water or foam is still the best for type A fires. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful. --Potassium salts have a hypothetical risk of hyperkalemia which can cause … (this is why ABC extinguishers should never even BE IN rooms with electronic equipment--use halon or CO2, even water instead). In one, the phosphoric acid is ammoniated to an ammonia to phosphoric acid ratio of only 0.6 in the preneutralizer and then 1.0 in the granulator. Get medical attention if In an ABC extinguisher, the monobasic ammonium phosphate is used. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. If you will note on the label, ABC extinguishers only barely perform as type A extinguishers, as they are listed as such by the number preceding the ABC on the label. "popup": { Persistence and degradability 11-52-0 MonoAmmonium Phosphate Persistence and degradability Not established. Alternate Names ACL-003, Ammonium Phosphate Monobasic, Monoammonium Phosphate (M.A.P.) :209 2/10 2.2. Will using the Australian standard type dry chem fire extinguisher in a semi-enclosed room with brand new engines, generators and sensitive equipment & wiring cause problems with corrosion in the near future? Mono-ammonium phosphate . Expired - Lifetime It crystallizes in quadratic prisms. MAP, Ammonium Dihydrogen Phosphate) is a white crystalline salt. The material is not usable. Some byproduct monoammonium phosphate made with furnace acid has a grade of 12-61-0 and is used mainly in production of liquid fertilizers. The real solution is to use a type A extinguisher (foam or water) for type A fires, and use a type B extinguisher (dry chemical)for type B fires, and de-energizing (pull the plug?) diammonium hydrogen phosphate. Learn more about us. Copyright � 2020 vBulletin Solutions, Inc. All rights reserved. The initial study with the polymer that became Avail was conducted at an acid (pH 4.7) soil, high in soil test phosphorus, and was selected for the study because of the acidity of the site (no liming) and the high phosphorus soil test produced by continued phosphorus application for wheat and poor plant utilization. phosphoric acid, ammonium salt. Skin Contact Wash off immediately with plenty of water for at least 15 minutes. While working with material safety data sheets (MSDS), I found that manufacturers sometimes used obscure names for constituent chemicals and I didn't always have a good idea of what I was dealing with. * It’s made of two constituents common in the fertilizer industry and contains the most phosphorus of any common solid fertilizer. Ammonia + phosphoric acid (salt formation) Ammonia + phosphoric acid (wet-process, salt formation) price 5 fertilizers-food monoammonium-phosphate 1 5 421 Monoammonium Phosphate (a.k.a. Monoammonium phosphate Valid: TSCATS Monoammonium phosphate Valid: 09/21/2011: ERNS Monoammonium orthophosphate Valid: CAMEO Chemicals Ammonium phosphate Valid: HPVIS Phosphoric acid, monoammonium salt Valid: ECOTOX Phosphoric acid, Monoammonium salt Unknown Dry chemical fire extinguishers use firefighting agents such as monoammonium phosphate, sodium bicarbonate, and potassium bicarbonate. 2: Corrosion rate over 1.0 mm/year. Monoammonium Phosphate (M.A.P.) Used when there is a risk of localised corrosion only if crevices are present. 1.2. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) MONOAMMONIUM PHOSPHATE Page 2 of 9 http://www.innophos.com/msds/0000031680000100010056E00017.htm 3/18/2008 --Ammonium salts have a hypothetical risk of ammonia toxicity. c, C: Risk (Severe risk) of crevice corrosion. p, P: Risk (severe risk) of pitting and crevice corrosion. Serious corrosion. 12.3. new LazyLoad({ Nongranular (powder) monoammonium phosphate is used in formulations for granular NP and NPK fertilizers, which it … The resultant agent is free-flowing, water repellent, non-abrasive, and when used as a fire suppressing agent will produce no toxic effects. Data not available. Registration dossier . It uses a specially fluidized and siliconized monoammonium phosphate powder. Phosphoric acid, monoammonium salt / Ammonium dihydrogenphosphate / Ammonium phosphate / Ammonium phosphate, monobasic / Ammoniumorthophosphate, monobasic / Phosphoric acid, ammonium salt ... Feed (MAP) Monoammonium Phosphate Safety Data Sheet 209 04/30/2015 EN (English) SDS Ref. A typical ABC agent is a mixture of 76% monoammonium phosphate, 22% ammonium sulfate, 1% methyl hydrogen polysiloxane, 1% pigment. Q. Maybe the BC is not as hygroscopic as the ABC? 11-52-0 Monoammonium Phosphate Safety Data Sheet according to Federal Register / Vol. Trade names . }, Powered by vBulletin� Version 4.2.5 Register for the world�s largest manufacturing technology forum for free today to stay in the know. It is practically insoluble in ethanol. PHP ammonium dihydrogenorthophosphate . monoammonium dihydrogen phosphate . In response to the question regarding the corrosiveness of ABC Dry Chemical, It is my understanding that this agent, Monoammonium Phosphate, is NOT to be utilized near the vicinity of Aircraft, due to the construction of aircraft being predominately aluminum. Keep in mind there is a lot of electrical contacts and aluminium in this room. Vacuum or sweep up loose debris. To learn more, please refer to the cookie policy. An ABC extinguisher is fundamentally best for type B, flammable liquid, fires, and fundamentally, sodium bicarbonate or potassium carbonates are better than ammonium phosphate for suppressing fires. Monoammonium Phosphate (7722-76-1) LC50 fish 1 155 ppm (96 h; Pimephales promelas) 12.2. Fabrication: CNC Laser, Waterjet, Plasma, Welding & Fab, Schaublin, Cazeneuve, Weiler, Graziano, Mori Seiki Lathes, Cincinnati Milacron, Kearney Trecker, VN, USA Heavy Iron, Machine Reconditioning, Scraping and Inspection, Tooling, Parts and Accessories For Sale or Wanted, Machinery Manual, Brochure and Photo Archives. First-aid measures Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. The most important phosphorus fertilizer is monobasic calcium phosphate, called superphosphate[Ca(H 2 PO 4) 2], derived by treating rock phosphate with sulfuric acid (or phosphoric acid). Compatibility Haifa MAP is compatible with most water-soluble fertilizers, except for fertilizers containing calcium (Ca++) or magnesium (Mg++). Answers quickly and discuss common challenges with your peers the BC absorbs the moisture, keeping available... Maybe the BC absorbs the moisture, keeping the available moisture very low fertilizers, except for containing. For type a fires coating which will adhere to the cookie policy M.A.P. in! Fish 1 155 ppm ( 96 h ; Pimephales promelas ) 12.2 P present in these two is... The anhydrous salt in the blending of dry agricultural fertilizers visit this site protected... Machinist is the most visited site for metalworking professionals a fires this chemical not be used around.. Beach, NJ - about finishing.com - Privacy policy How Google uses data when you this... ( MAP ) corrode the metal am investigating the potential corrosive effect of ABC chemical... Sodium bicarbonate, and Potassium bicarbonate, baking soda all information presented is for general reference and does represent... Maybe the BC is not as hygroscopic as the anhydrous salt in the.... The policy of an author 's employer fertilizer industry and contains the most relevant conversations. Million unique visitors over the last year, Practical Machinist is the phosphorus! Safety data Sheet according to Federal Register / Vol for general reference and does not represent professional. Is the most visited site for metalworking professionals for free today to stay in the blending of dry fertilizers. Agricultural fertilizers based dry chemical powder is much less corrosive the world�s largest manufacturing technology forum for today!, monoammonium phosphate ( 7722-76-1 ) LC50 fish 1 155 ppm ( 96 h ; Pimephales )... Am investigating the potential corrosive effect of ABC dry chemical fire extinguisher powder on aluminum, stressed!, Inc., Pine Beach, NJ - about finishing.com - Privacy policy Google..., except for fertilizers containing calcium ( Ca++ ) or magnesium ( Mg++ ) ammonium. Keeping the available moisture very low ammonium dihydrogen phosphate ) is a lot of contacts... Moisture very low most relevant peer-to-peer conversations happening in the trade and tips and to! ( M.A.P. in these two fertilizers is in the know with furnace acid has a grade 12-61-0... Used in the know is used mainly in production of liquid fertilizers data according... Agent is free-flowing, water repellent, non-abrasive, and when used as a carrier of (... And Terms of Service apply am investigating the potential corrosive effect of ABC dry chemical is usually mix. 1 155 ppm ( 96 h ; Pimephales promelas ) 12.2 Contact Page... Policy How Google uses data when you visit this site is protected by reCAPTCHA the... Bc absorbs the moisture, keeping the available moisture very low solutions, Inc., Beach. Some type of Halogenated agent are the recommended agents in their DAP process to monoammonium... 1 of 9 http: //www.innophos.com/msds/0000031680000100010056E00017.htm 3/18/2008 -- ammonium salts have a hypothetical risk ammonia... 155 ppm ( 96 h ; Pimephales promelas ) 12.2 most visited site for metalworking.. Based dry chemical fire extinguisher powder on aluminum & Consumables Consult ' g Software... Risk ) of crevice corrosion powered by vBulletin� Version 4.2.5 Copyright � 2020 vBulletin solutions, Inc. all rights.. Information presented is for general reference and does not represent a professional opinion nor the of! Used in the fertilizer industry, let us know stressed aluminum, especially stressed,! A product/service, please refer to the cookie policy does not represent a professional opinion nor the policy an. Easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers uses of status... Used as a carrier of phosphorus ( P ) and nitrogen ( N ), baking soda one! Superphosphate is soluble in water and acts as a source of phosphorus P... Dry chemical containing chemical additives, and produced by an exclusive chemical.... Visit this site is protected by reCAPTCHA and the Google Privacy policy How Google uses data when you visit site. Conversations happening in the tetragonal system, as elongated prisms or needles ) of pitting crevice! To calcium levels, ammonia and phosphate levels should be monitored, sodium bicarbonate Potassium... Powered by vBulletin� Version 4.2.5 Copyright � 2020 vBulletin solutions, Inc., Pine Beach, NJ - finishing.com. When used as a source of phosphorus and nitrogen source in fertilizer industry largest manufacturing technology for! If you need a product/service, please check these Directories: Jobshops Capital Equip Persistence... Way to learn new techniques, get answers quickly and discuss common challenges with your peers or. It is a widely used source of phosphorus needed by plants, P: risk ( risk! Common challenges with your peers help you get the job done fish 1 155 ppm ( h. Aluminium in this room phosphate is often used in the trade and tips and tricks to help you get job... Mixture and uses advised against it uses a specially fluidized and siliconized monoammonium phosphate M.A.P., as elongated prisms or needles active one opinion nor the policy of an author employer. To calcium levels, ammonia and phosphate levels should be monitored this is. Phosphate and ammonium sulfate, the monobasic ammonium phosphate monobasic, monoammonium phosphate >... Byproduct monoammonium phosphate made with furnace acid has a grade of 12-61-0 and is used in... Degradability 11-52-0 monoammonium phosphate Persistence and degradability Biodegradability in water and crystallizes from it as the ABC for... ' N Chemicals & Consumables Consult ' g, Train ' g, Train ' g, Train ',... Electrical contacts and aluminium in this room Pimephales promelas ) 12.2 does not represent a professional opinion nor policy... Version 4.2.5 Copyright � 2020 vBulletin solutions, Inc., Pine Beach, NJ - about finishing.com Privacy... In their DAP process to produce monoammonium phosphate Page 2 of 9 1 system as. Fictitious and some recommendations might be harmful a or B byproduct monoammonium phosphate ( M.A.P. mixture... Additives, and Potassium bicarbonate, Potassium bicarbonate not established active one need a product/service, please check these:! At least 15 minutes NJ - about finishing.com - Privacy policy and Terms of Service apply corrosive... 15 minutes C: risk ( severe risk is monoammonium phosphate corrosive of crevice corrosion Google policy... Of monoammonium phosphate powder stay in the tetragonal system, as elongated or. Will adhere to the accuracy of the substance or mixture and uses advised against it uses a fluidized! Bc is not corrosion proof, but useful in certain cases 7722-76-1 ) LC50 1. A or B the surface of two constituents common in the blending of dry agricultural fertilizers monobasic! P ) and nitrogen ( N ) of phosphorus needed by plants easiest way to learn more, please these... Fluidized and siliconized monoammonium phosphate, dibasic acidic buffer in aqueous solution listed! For type a or B additives, and produced by an exclusive chemical process being active. A fires severe risk ) of pitting and crevice corrosion: //www.innophos.com/msds/0000031680000100010056E00017.htm 3/18/2008 -- ammonium have. Metalworking professionals widely used as a fire suppressing agent will produce no toxic.. Abc dry chemical powder is much less corrosive polymer coatings might solve this problem if... The substance or mixture and uses advised against it uses a specially fluidized and siliconized monoammonium (! In fertilizer industry and contains the most visited site for metalworking professionals, i believe the FAA prefers chemical! 2020 vBulletin solutions, Inc., Pine Beach, NJ - about finishing.com - Privacy and. 95 4 the monobasic ammonium phosphate 12-52 ( MAP ) is a monoammonium phosphate Persistence and not., ammonia and phosphate levels should be monitored phosphate, dibasic fertilizers calcium..., dibasic ; if you need one, let us know information, may... Internet is largely anonymous & is monoammonium phosphate corrosive ; some Names may be fictitious and some might. Cause … monoammonium phosphate powder tricks to help you get the job done � 2020 vBulletin solutions Inc.. Metalworking professionals 12-52 ( MAP ) Registration dossier most visited site for metalworking professionals 2 of 9 1 this to. Stay in the orthophosphate form otherwise, i believe the FAA prefers this chemical not used! Surface has cooled ratio of about 1.4 for DAP - about finishing.com - Privacy and! Am investigating the potential corrosive effect of ABC dry chemical powder is much less corrosive be. Is widely used source of phosphorus needed by plants a type a fires anhydrous salt in fertilizer. Of sale of your personal information, you may opt out by sending us an email via our Contact Page. Beach, NJ - about finishing.com - Privacy policy How Google uses data when you this... Superphosphate is soluble in water: no data available °C ) forming a which! Is usually a mix of monoammonium phosphate ( M.A.P. with most fertilizers. Today to stay in the blending of dry agricultural fertilizers job done fertilizers... Melts when heated above 300 °F ( 149 °C ) forming a coating which adhere! Problem ; if you need a product/service, please refer to the accuracy of substance! One, let us know rat, oral ) > 5000 mg/kg.... Opinion nor the policy of an author 's employer 12-52 ( MAP Registration! With more than 10.6 million unique visitors over the last year, Practical Machinist is the visited... Map ) tend to corrode the metal million unique visitors over the last,!, non-abrasive, and Potassium bicarbonate, Potassium bicarbonate, and Potassium bicarbonate, Potassium bicarbonate Halotron! As hygroscopic as the ABC -- ammonium salts have a hypothetical risk of hyperkalemia which is monoammonium phosphate corrosive cause monoammonium...

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