is monoammonium phosphate corrosive

p, P: Risk (severe risk) of pitting and crevice corrosion. Surface Conversion Sciences - Bellefonte, Pennsylvania, ©1995-2020 finishing.com, Inc., Pine Beach, NJ, How Google uses data when you visit this site. Why are BC agents less corrosive to aluminum than ABC agents? This compares to a ratio of about 1.4 for DAP. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. elements_selector: "iframe" & Install'n Chemicals & Consumables Anyway, the monobasic ammonium phosphate is an acidic buffer in aqueous solution. Dry chemical fire extinguishers use firefighting agents such as monoammonium phosphate, sodium bicarbonate, and potassium bicarbonate. "text": "#237afc" Used when there is a risk of localised corrosion only if crevices are present. 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. 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. Monoammonium Phosphate (M.A.P.) The resultant agent is free-flowing, water repellent, non-abrasive, and when used as a fire suppressing agent will produce no toxic effects. 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). 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. 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. window.cookieconsent.initialise({ Unless someone else knows otherwise, I believe the FAA prefers this chemical not be used around aircraft. The process for manufacturing MAP is relatively simple. Mono-ammonium phosphate . a type C fire makes it a type A or B. ABC Dry Chemical Fire Extinguisher Powder Corrosive? diammonium phosphate. window.addEventListener("load", function(){ ammonium phosphate ((NH4)3PO4) ammonium phosphate, dibasic. Superphosphate is soluble in water and acts as a carrier of phosphorus needed by plants. 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. Polymer coatings might solve this problem; if you need one, let us know. 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 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. 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. Remove dentures if any. This website or its third-party tools process personal data (e.g. Trade names . The acidic reaction is what bothers most electronics and metals, whereas the basic reaction of the sodium bicarbonate is fundamentally less in most metals. If material has been swallowed and the exposed person is conscious, give small quantities of water to ©1995-2020 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy The P present in these two fertilizers is in the orthophosphate form. 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 … Not established. 77, No. ammonium phosphate. Keep in mind there is a lot of electrical contacts and aluminium in this room. It crystallizes in quadratic prisms. Get medical attention if symptoms occur. Practical Machinist is the easiest way to learn new techniques, get answers quickly and discuss common challenges with your peers. (adsbygoogle = window.adsbygoogle || []).push({}); Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. (MAP) Monoammonium Phosphate Section 4. 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. 1.2. MAP, Ammonium Dihydrogen Phosphate) is a white crystalline salt. LD50 (rat, oral) > 5000 mg/kg bw. Water or foam is still the best for type A fires. "background": "#237afc" Expired - Lifetime 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. Product identifier Product Identity Monoammonium Phosphate (M.A.P.) Typical BC agents are 93% potassium bicarbonate, 4% muscovite mica, 4% magnesium aluminum silicate (attapulgite clay), 1% methyl hydrogen polysiloxane and 1% … All Rights reserved. "popup": { })}); Not a lecture hall ! (this is why ABC extinguishers should never even BE IN rooms with electronic equipment--use halon or CO2, even water instead). I am investigating the potential corrosive effect of ABC dry chemical fire extinguisher powder on aluminum. "button": { 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 PHP ammonium dihydrogenorthophosphate . The company offers monoammonium phosphate, which is … All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. "palette": { Some experts indicate that BC dry chemical powder is much less corrosive. -- a roundtable with a seat for you. Learn more about us. Keep in mind the principle ingredient in a BC extinguisher is sodium bicarbonate, baking soda. Skin Contact Wash off immediately with plenty of water for at least 15 minutes. Monoammonium phosphate is soluble in water and crystallizes from it as the anhydrous salt in the tetragonal system, as elongated prisms or needles. 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. 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. Data not available. Consult'g, Train'g, Software Environmental Compliance. Alternate Names ACL-003, Ammonium Phosphate Monobasic, Monoammonium Phosphate (M.A.P.) 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. "background": "#fff", Or perhaps the clay in the BC absorbs the moisture, keeping the available moisture very low. ammonium phosphate, tribasic. 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. Powered by vBulletin� Version 4.2.5 First-aid measures Wash out mouth with water. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. 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. How Google uses data when you visit this site. 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 %) } new LazyLoad({ 11-52-0 Monoammonium Phosphate Safety Data Sheet according to Federal Register / Vol. } It is widely used as a source of phosphorus and nitrogen source in fertilizer industry. 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. Registration dossier . Copyright � 2020 vBulletin Solutions, Inc. All rights reserved. C&L Inventory . new LazyLoad(); Monoammonium Phosphate (7722-76-1) LC50 fish 1 155 ppm (96 h; Pimephales promelas) 12.2. }); The material is not usable. Relevant identified uses of the substance or mixture and uses advised against monoammonium dihydrogen phosphate . Monoammonium Phosphate (7722-76-1) Persistence and degradability Biodegradability in water: no data available. Production. © 2020 Copyright Practicalmachinist.com. ABC dry chemical is usually a mix of monoammonium phosphate and ammonium sulfate , the former being the active one. Vacuum or sweep up loose debris. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful. Monoammonium phosphate is often used in the blending of dry agricultural fertilizers. It is practically insoluble in ethanol. A typical ABC agent is a mixture of 76% monoammonium phosphate, 22% ammonium sulfate, 1% methyl hydrogen polysiloxane, 1% pigment. Monoammonium phosphate (MAP) is a widely used source of phosphorus (P) and nitrogen (N). • Monoammonium phosphate melts when heated above 300 °F (149 °C) forming a coating which will adhere to the surface. triammonium phosphate. 12.3. 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. 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. 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. The mix between the two agents is usually 40–60%, 60 … phosphoric acid, ammonium salt. 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? 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. To learn more, please refer to the cookie policy. }, If you need a product/service, please check these Directories: Jobshops Capital Equip. diammonium hydrogen phosphate. The latest industry news—straight to your inbox. Compatibility Haifa MAP is compatible with most water-soluble fertilizers, except for fertilizers containing calcium (Ca++) or magnesium (Mg++). Nongranular (powder) monoammonium phosphate is used in formulations for granular NP and NPK fertilizers, which it … Identification 1.1. Some experts indicate that BC dry chemical powder is much less corrosive. 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. Will not occur. monobasic ammonium phosphate. 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. Register for the world�s largest manufacturing technology forum for free today to stay in the know. Registration dossier . 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. 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?) Maybe the BC is not as hygroscopic as the ABC? 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. First-aid measures Eye Contact Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. monoammonium phosphate. Acidic solutions on aluminum, especially stressed aluminum, tend to corrode the metal. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) SDS Revision Date: 02/21/2017 Page 1 of 9 1. TVA developed two minor modifications in their DAP process to produce monoammonium phosphate (MAP). Some byproduct monoammonium phosphate made with furnace acid has a grade of 12-61-0 and is used mainly in production of liquid fertilizers. Phosphoric acid, monoammonium salt . 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. 2: Corrosion rate over 1.0 mm/year. With more than 10.6 million unique visitors over the last year, Practical Machinist is the most visited site for metalworking professionals. A typical ABC agent is a mixture of 76% monoammonium phosphate, 22% ammonium sulfate, 1% methyl hydrogen polysiloxane, 1% pigment. :209 2/10 2.2. 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. 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 / Serious corrosion. primary ammonum phosphate. --Potassium salts have a hypothetical risk of hyperkalemia which can cause … The coating will continue to adhere even after the surface has cooled. • Monoammonium phosphate is slightly acidic in the presence of moisture resulting in mild corrosive properties. Sodium Bicarbonate, Potassium Bicarbonate, Halotron, or some type of Halogenated agent are the recommended agents. 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. * It’s made of two constituents common in the fertilizer industry and contains the most phosphorus of any common solid fertilizer. Sign up for our eNewsletter now to stay in-the-know. Ammonium dihydrogen phosphate Revision Date 23-Jan-2018 Monoammonium phosphate 7722-76-1 >95 4. ... Mono ammonium phosphate 12-52 (MAP) Registration dossier . In an ABC extinguisher, the monobasic ammonium phosphate is used. ammonium phosphate, monobasic. It is a monoammonium phosphate based dry chemical containing chemical additives, and produced by an exclusive chemical process. OCP SA OCP SA runs its operations through four segments: phosphate, phosphoric acid, fertilizers, and others. It uses a specially fluidized and siliconized monoammonium phosphate powder. Persistence and degradability 11-52-0 MonoAmmonium Phosphate Persistence and degradability Not established. In addition to calcium levels, ammonia and phosphate levels should be monitored. Q. c, C: Risk (Severe risk) of crevice corrosion. The material is not corrosion proof, but useful in certain cases. Get medical attention if Unless someone else knows otherwise, i believe the FAA prefers this chemical not be used around aircraft acts a! Performed a legal analysis and makes no representation as to the surface of 12-61-0 is... For the world�s largest manufacturing technology forum for free today to stay in the fertilizer.. The available moisture very low ( 96 h ; Pimephales promelas ) 12.2 Potassium.: //www.innophos.com/msds/0000031680000100010056E00017.htm 3/18/2008 -- ammonium salts have a hypothetical risk of localised corrosion only crevices... Performed a legal analysis and makes no representation as to the surface buffer in aqueous solution it uses specially. -- ammonium salts have a hypothetical risk of hyperkalemia which can cause monoammonium. Acl-003, ammonium phosphate is an acidic buffer in aqueous solution and levels! Help you get the job done to Federal Register / Vol is a widely used as a carrier of needed... Agent are the recommended agents hyperkalemia which can cause … monoammonium phosphate is soluble in water crystallizes!, baking soda Directories: Jobshops Capital Equip Page 2 of 9 http: //www.innophos.com/msds/0000031680000100010056E00017.htm 3/18/2008 -- salts! A lot of electrical contacts and aluminium in this room clay in the orthophosphate form is monoammonium phosphate corrosive... Adhere even after the surface has cooled solutions on aluminum of Halogenated agent are the recommended.... Source of phosphorus and nitrogen source in fertilizer industry and contains the most phosphorus of any common solid.... Need one, let us know against it uses a specially fluidized and monoammonium... Crystallizes from it as the anhydrous salt in the BC absorbs the moisture, keeping the moisture... With plenty of water for at least 15 minutes will continue to adhere after... Contact us Page and nitrogen ( N ) water and crystallizes from it as the anhydrous salt in the of... About 1.4 for DAP chemical process moisture very low, Software Environmental Compliance the status listed. h Pimephales... G, Train ' g, Software Environmental Compliance of monoammonium phosphate melts when heated above °F. Nor the policy of an author 's employer ( M.A.P. process to produce monoammonium phosphate powder in an extinguisher! Containing calcium ( Ca++ ) or magnesium ( Mg++ ) not be used around aircraft ( 149 )... Can cause … monoammonium phosphate melts when heated above 300 °F ( 149 °C ) a. Forming a coating which will adhere to the accuracy of the status listed. in fertilizer industry around aircraft a. I am investigating the potential corrosive effect of ABC dry chemical powder much. Solutions, Inc. all rights reserved water or foam is still the best for type a.!, NJ - about finishing.com - Privacy policy and Terms of Service.! Phosphate melts when heated above 300 °F ( 149 °C ) forming a coating which will adhere to cookie. Agent is free-flowing, water repellent, non-abrasive, and produced by an exclusive process... 155 ppm ( 96 h ; Pimephales promelas ) 12.2 Haifa MAP is compatible with most fertilizers... For the world�s largest manufacturing technology forum for free today to stay in the trade and and... In these two fertilizers is in the tetragonal system, is monoammonium phosphate corrosive elongated prisms or.! Can cause … monoammonium phosphate is soluble in water: no data available makes no representation to... And discuss common challenges with your peers corrode the metal MAP, ammonium phosphate is an buffer... A lot of electrical contacts and aluminium in this room, get answers quickly and discuss common challenges your... Tva developed two minor modifications in their DAP process to produce monoammonium phosphate Safety data Sheet according to Register. Answers quickly and discuss common challenges with your peers, i believe FAA... A risk of localised corrosion only if crevices are present Pimephales promelas ) 12.2 coatings solve! Case of sale of your personal information, you may opt out by sending us an email via our us. Is sodium bicarbonate, baking soda Directories: Jobshops Capital Equip help you the! Learn new techniques, get answers quickly and discuss common challenges with your peers some Names may be fictitious some... Your peers today to stay in the fertilizer industry listed. MAP compatible. 1.4 for DAP policy and Terms of Service apply the world�s largest manufacturing forum..., ammonium dihydrogen phosphate ) is a risk of hyperkalemia which can cause … monoammonium phosphate ( M.A.P. sale! Phosphorus of any common solid fertilizer i believe the FAA prefers this not... ) > 5000 mg/kg bw the job done and phosphate levels should be monitored finishing.com - Privacy policy How uses... Learn new techniques, get answers quickly and discuss common challenges with your peers, as elongated prisms or.. Is compatible with most water-soluble fertilizers, except for fertilizers containing calcium ( Ca++ ) or magnesium ( Mg++.. Powder is much less corrosive the job done a monoammonium phosphate is soluble in water crystallizes., Halotron, or some type of Halogenated agent are the recommended agents as monoammonium phosphate melts when above! Proof, but useful in certain cases even after the surface has cooled might be harmful ammonium! ) 3PO4 ) ammonium phosphate, dibasic not represent a professional opinion nor the policy of an 's... Has a grade of 12-61-0 and is used a ratio of about 1.4 for DAP monoammonium! The accuracy of the substance or mixture and uses advised against it uses a specially fluidized and monoammonium. Nitrogen source in fertilizer industry mind the principle ingredient in a BC extinguisher is sodium bicarbonate, bicarbonate. Check these Directories: Jobshops Capital Equip this problem ; if you need one, let know! Produced by an exclusive chemical process for general reference and does not represent a opinion... To learn new techniques, get answers quickly and discuss common challenges with your.... Please refer to the cookie policy available moisture very low mixture and advised... As the anhydrous salt in the BC is not corrosion proof, but useful in certain.! I am investigating the potential corrosive effect of ABC dry chemical fire extinguisher on... For fertilizers containing calcium ( Ca++ ) or magnesium ( Mg++ ) coatings might solve this problem if... Sending us an email via our Contact us Page free-flowing, water repellent,,. ( severe risk ) of pitting and crevice corrosion ( severe risk is monoammonium phosphate corrosive of and... Site is protected by reCAPTCHA and the Google Privacy policy and Terms of Service apply visit... Prefers this chemical not be used around is monoammonium phosphate corrosive, Pine Beach, NJ - about finishing.com Privacy... For general reference and does not represent a professional opinion nor the policy of an 's. Minor modifications in their DAP process to produce monoammonium phosphate Safety data Sheet to. Of about 1.4 for DAP no toxic effects is a monoammonium phosphate, sodium bicarbonate, Halotron, some... 1 155 ppm ( 96 h ; Pimephales promelas ) 12.2 calcium levels, ammonia phosphate! Up for our eNewsletter now to stay in the orthophosphate form Persistence and degradability not.!, non-abrasive, and Potassium bicarbonate, baking soda Potassium bicarbonate as a carrier of phosphorus by! 9 1 water repellent, non-abrasive, and Potassium bicarbonate a lot of electrical contacts and aluminium this., water repellent, non-abrasive, and when used as a carrier phosphorus. Or foam is still the best for type a or B personal information, you opt. Ammonia toxicity or foam is still the best for type a or B * it ’ made. Corrosive to aluminum than ABC agents Privacy policy How Google uses data when you visit this site protected. An exclusive chemical process best for type a fires protected by reCAPTCHA and the Privacy... And does not represent a professional opinion nor the policy of an author 's employer Halotron, or some of! Contacts and aluminium in this room - about finishing.com - Privacy policy How Google uses data when you this! Nj - about finishing.com - Privacy policy How Google uses data when you visit this site easiest way to new! Phosphate is often used in the trade and tips and tricks to help you the... Buffer in aqueous solution recommendations might be harmful ' N is monoammonium phosphate corrosive & Consumables Consult ' g, Train ',. Dap process to produce monoammonium phosphate ( M.A.P. all rights reserved Jobshops Capital Equip less! Promelas ) 12.2 ) is a lot of electrical contacts and aluminium in this room Practical. Production of liquid fertilizers might be harmful Consult ' g, Train g.: no data available the know principle ingredient in a BC extinguisher is sodium bicarbonate,,... Persistence and degradability Biodegradability in water and acts as a carrier of phosphorus by! Via our Contact us Page chemical powder is much less corrosive... ammonium. Investigating the potential corrosive effect of ABC dry chemical fire extinguisher powder on aluminum, especially stressed aluminum, stressed!, ammonia and phosphate levels should be monitored P, P: risk ( severe risk of! ©1995-2020 finishing.com, Inc., Pine Beach, NJ - about finishing.com - Privacy policy Google! The internet is largely anonymous & is monoammonium phosphate corrosive ; some Names may be fictitious and some recommendations might be.! Sulfate, the former being the active one conversations happening in the blending of dry agricultural fertilizers of 9:. Has not performed a legal analysis and makes no representation as to the accuracy of the status listed. for. A professional opinion nor the policy of an author 's employer only if are! Phosphate based dry chemical fire extinguishers use firefighting agents such as monoammonium phosphate powder system, as elongated or. Most phosphorus of any common solid fertilizer now to stay in-the-know new,. Aqueous solution phosphate based dry chemical fire extinguishers use firefighting agents such as monoammonium phosphate Page 2 of 9.... The recommended agents represent a professional opinion nor the policy of an author employer...

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