1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) HEDP 90% hmoov / HEDP 60% kua
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)
CAS No. 2809-21-4
Cov mis molecular: C2H8TUS7P2
Qhov hnyav molecular: 206.02
Qib: 60% kua; 90% hmoov
HEDP yog ib qho tshuaj organophosphoric acid corrosion inhibitor. Nws tuaj yeem chelate nrog Fe, Cu, thiab Zn ions los tsim cov chelating compounds ruaj khov. Nws tuaj yeem yaj cov khoom oxidized ntawm cov hlau no. HEDP qhia tau zoo heev ntawm qhov ntsuas thiab kev tiv thaiv xeb hauv qab qhov kub 250 ℃. HEDP muaj kev ruaj khov tshuaj zoo nyob rau hauv pH siab, nyuaj rau hydrolyzed, thiab nyuaj rau decompose nyob rau hauv lub teeb thiab cua sov ib txwm muaj. Nws cov kua qaub / alkali thiab chlorine oxidation kam rau siab zoo dua li lwm cov organophosphoric acids (ntsev). HEDP tuaj yeem cuam tshuam nrog cov hlau ions hauv dej system los tsim hexa-element chelating complex, nrog rau calcium ion tshwj xeeb. Yog li ntawd, HEDP muaj cov teebmeem zoo antiscale thiab pom tseeb. Thaum ua ke nrog lwm cov tshuaj kho dej, nws qhia tau tias muaj cov teebmeem synergistic zoo. Lub xeev khov kho ntawm HEDP yog hmoov siv lead ua, tsim nyog rau kev siv thaum lub caij ntuj no thiab thaj chaw khov. Vim nws qhov purity siab, nws tuaj yeem siv ua tus neeg sawv cev ntxuav hauv cov teb hluav taws xob thiab ua cov khoom ntxiv rau hauv cov tshuaj txhua hnub.
HEDP yog siv ua nplai thiab corrosion inhibition hauv circulating dej txias system, roj teb thiab low-pressure boilers nyob rau hauv teb xws li hluav taws xob fais fab, tshuaj lom neeg kev lag luam, metallurgy, chiv, thiab lwm yam. Hauv lub teeb woven kev lag luam, HEDP yog siv ua tshuaj ntxuav rau hlau thiab nonmetal. Hauv kev lag luam dyeing, HEDP siv ua peroxide stabilizer thiab dye-fixing agent; Hauv cov electroplating uas tsis yog cyanide, HEDP siv ua tus neeg sawv cev chelating. Qhov koob tshuaj ntawm 1-10mg/L yog qhov zoo dua li cov nplai inhibitor, 10-50mg/L ua cov tshuaj tiv thaiv xeb, thiab 1000-2000mg/L ua cov tshuaj ntxuav tes. Feem ntau, HEDP siv ua ke nrog polycarboxylic acid.
| Cov khoom | Cov Ntawv Qhia | |
|---|---|---|
| Qhov tsos | Ntshiab, Tsis muaj xim rau daj ntseg aqueous kua | Hmoov siv lead ua dawb |
| Cov ntsiab lus nquag (HEDP)% | 58.0-62.0 | 90.0 feeb |
| Cov ntsiab lus nquag (HEDP·H2TUS)% | - | 98.0 feeb |
| Phosphorus acid (raws li PO4)33-)% | 2.0 siab tshaj plaws | 0.8 siab tshaj |
| Phosphoric acid (raws li PO4)43-)% | 0.8 siab tshaj | 0.5 siab tshaj |
| Chloride (raws li Cl-)% | 0.02 siab tshaj | 0.01 siab tshaj |
| pH (1% dej tov) | 2.0 siab tshaj plaws | 2.0 siab tshaj plaws |
| Qhov Ceev (20 ℃) g / cm3 | 1.40 feeb | - |
| Fe, mg/L | siab tshaj 20.0 | siab tshaj 10.0 |
| Kev rho tawm Ca (mg CaCO3)3/g) | 500.0 feeb | - |
HEDP kua: 200L yas nruas, IBC (1000L), cov neeg siv khoom xav tau.
HEDP khoom: 25kg / hnab, cov neeg siv khoom xav tau.
Khaws cia rau kaum ob lub hlis hauv chav tsev ntxoov ntxoo thiab qhuav.
