Tsev / Khoom / Trisodium Phosphate / Ntsiab lus

Phosphoric Acid Company

Lub npe lag luam: phosphorous acid
CAS Naj Npawb: 13598-36-2
Formula﹕H₃PO₃
EINECS: 233-663-1
Lub cev lub cev: dawb crystal
UN: 2834 Ntim: 25KG / hnab

Xa kev nug

PROSPHOROUS ACID

Phosphorous acid (H₃PO₃) nthuav tawm cov tshuaj lom neeg tshwj xeeb vim nws cov qauv, uas nws muaj ib daim ntawv P=O thiab ob daim ntawv P-OH. Nws ua raws li diprotic acid, dissociating ob protons nyob rau hauv aqueous tov los tsim HPO₃²⁻ ions. Nws yog ib qho kev txo qis me me thiab tuaj yeem txo cov tebchaw xws li Ag⁺, Hg²⁺, thiab Cu²⁺ ions, feem ntau tsim cov hlau. Thaum tshav kub kub, nws decomposes rau hauv phosphoric acid (H₃PO₄) thiab phosphine gas (PH₃), uas yog tshuaj lom thiab flammable. Phosphorous acid yog dav siv nyob rau hauv kev ua liaj ua teb raws li ib tug fungicide thiab tshuaj synthesis rau zus tau tej cov phosphonates.

Cov khoom kuaj	Sawv

Assay (raws li H3PO3) Ntau dua lossis sib npaug rau %	98.5% Min

Sulfate (raws li SO4) Tsawg dua lossis sib npaug li %	0.006%Max

Chloride (raws li CL) Tsawg dua lossis sib npaug rau %	0.01% Max

Phosphate (raws li PO4) Tsawg dua lossis sib npaug li %	0.1% Max

Hnyav Hlau (Pb) Tsawg dua lossis sib npaug rau %	0.001%Max

Phosphorous acid yog siv los ua catalyst hauv esterification cov tshuaj tiv thaiv, uas yog qhov tseem ceeb hauv kev tsim cov esters rau ntau yam lag luam. Nws lub luag haujlwm ua tus catalyst ua kom ntseeg tau tias cov kev cuam tshuam tshwm sim ntawm tus nqi nrawm dua thiab qis dua qhov kub thiab txias, txhim kho kev ua haujlwm thiab txo kev siv hluav taws xob. Kev siv nws nyob rau hauv cov txheej txheem esterification yog muaj nyob rau hauv cov synthesis ntawm flavors, fragrances, thiab plasticizers. Cov kua qaub muaj peev xwm tsav cov kev cuam tshuam no yam tsis muaj kev phiv ntawm cov esters 'zoo ua rau nws nyiam catalyst nyob rau hauv ob qho tib si kev tshawb fawb labs thiab loj-scale industrial ntau lawm.

Phosphorous acid 1