Phosphoric acid yog qhov thib ob tsuas yog sulfuric acid raws li cov kua qaub ua lag luam thiab tsis tu ncua ranksin saum 10 cov tshuaj siv thoob ntiaj teb.States, tab sis nws yog siv nyob rau hauv ib tug xov tooj ntawm lwm yam kev siv. Phosphates tau siv los ua cov neeg tsim khoom thiab cov dej softeners. Tus neeg tsim khoom yog ib yam khoom ntxiv rau xab npum lossis tshuaj ntxuav tes kom ua kom lawv lub zog huv.
Phosphoric acid yog siv los ua ib qho nruab nrab hauv kev tsim cov khoom noj tsiaj, tshuaj kho dej, kho cov hlau saum npoo, etching tus neeg sawv cev, thiab cov khoom tu tus kheej xws li tshuaj txhuam hniav. Nws yog siv los ua catalyst hauv kev lag luam roj av thiab polymer. Phosphoricacid yog siv nyob rau hauv cov zaub mov raws li preservative, acidulant, thiab tsw enhancer; nws acidifies carbonateddrinks xws li Coca Cola thiab Pepsi, muab lawv ib tug tangy tsw. Phosphoric acid yog siv los ua arust remover thiab hlau ntxuav. Naval Jelly yog kwv yees li 25% phosphoric acid. Lwm cov kev siv rau phosphoric acid suav nrog kev tswj xyuas qhov pom ntawm iav, textile dyeing, roj hmab latexcoagulation, thiab kho hniav cements.
Phosphoric acid (H3PO4) yog qhov tseem ceeb tshaj plaws oxoacid ntawm phosphorus thiab nws txoj kev siv tseem ceeb yog hauv kev tsim cov chiv.
Nyob rau hauv tib neeg lub cev, phosphate yog lub ntsiab phosphorus-muaj compound. Phosphate yog ib qho inorganic compound thiab yog ntsev ntawm phosphoric acid. Nws tuaj yeem tsim cov organic esters nrog ntau yam sib txuas thiab cov no tseem ceeb hauv ntau cov txheej txheem biochemical. Phosphate muaj cov mis empirical PO43-. Nws yog tetrahedral molecule, qhov twg lub hauv paus phosphorus atom yog surrounded los ntawm plaub oxygen atoms.
Hauv cov kab ke lom neeg, phosphate feem ntau pom xws li cov ion dawb (inorganic phosphate) lossis ua ester tom qab cov tshuaj tiv thaiv nrog cov organic tebchaw (feem ntau hu ua organic phosphates). Inorganic phosphate (feem ntau txhais tau tias yog Pi) yog sib xyaw ntawm HPO42- thiab H2PO4- ntawm lub cev pH.