1-Hydroxyethylidene-1,1-Diphosphonic Acid
CAS Nr . 2809-21-4
Cov mis mos molecular: C2H8O7P2
Molecular Luj: 206.02
Hauj lwm lawm
HEDP
| CAS Nr . 2809-21-4 | |
| Molecular Formula: C2H8O7P2 | Molecular Luj: 206.02 |
| Cov qauv qauv: |
|
Cov khoom
HEDP yog organophosphoric acid corrosion inhibitor. Nws tuaj yeem chelate nrog Fe, Cu, thiab Zn ions los tsim cov chelate ruaj khov. HEDP qhia tau hais tias zoo heev nplai thiab corrosion inhibition cuam tshuam nyob rau hauv kub 250 degree. HEDP muaj cov tshuaj lom neeg ruaj khov zoo nyob rau hauv tus nqi pH siab, nyuaj rau hydrolyzed, thiab nyuaj rau decomposed nyob rau hauv lub teeb thiab cua sov. Nws cov kua qaub / alkali thiab chlorine oxidation kam rau ua zoo dua li lwm cov organophosphoric acids (ntsev). HEDP tuaj yeem hnov mob nrog cov hlau ions hauv dej los tsim hexa-cov ntsiab lus chelating complex, nrog rau calcium ion tshwj xeeb. Yog li ntawd, HEDP muaj kev tiv thaiv zoo thiab pom qhov pib tshwm sim. Thaum tsim ua ke nrog lwm cov tshuaj kho dej, nws qhia tau hais tias muaj txiaj ntsig zoo.
Lub xeev ntawm HEDP yog siv lead ua hmoov, haum rau kev siv nyob rau lub caij ntuj no thiab khov hauv cheeb tsam. Vim nws cov purity siab, nws tuaj yeem siv los ua tus neeg saib xyuas hauv hluav taws xob thiab ua cov tshuaj ntxiv hauv cov tshuaj niaj hnub.
Specification
|
Cov khoom |
Index |
|
|
Qhov tshwm sim |
Ntshiab, Colorless rau daj ntseg daj aqueous tov |
Dawb crystal hmoov |
|
Cov ntsiab lus nquag (HEDP)% |
58.0-62.0 |
9 0,0mn |
|
Cov ntsiab lus nquag (HEDP·H2O)% |
- |
98.0 nqi |
|
Phosphorous acid (raws li PO33-)% |
2.0 max |
0.8 max |
|
Phosphoric acid (raws li PO43- )% |
0.8 max |
0.5 max |
|
Chloride (raws li Cl-)% |
0.02 max |
0.01 max |
|
pH (1% dej tov) |
2.0 max |
2.0 max |
|
Qhov ceev (20 degree) g / cm33 |
1.40 min |
- |
|
Fe, mg/L |
max 20.0 Nws |
10.0 max |
|
Ca sequestration (mg CaCO3/g) |
500,0 min |
|
Synonyms
HEDP;HEDP(A); HEDPA;
Etidronic acid;
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid;
Hydroxyethylidene-1,1-diphosphonicacid (HEDP);
1-Hydroxyethylidedeniphosphonic Acid;
Hydroxyethylidene Diphosphonic acid (HEDP);
1-Hydroxy-1,1-Ethanediyl ester;
Oxyethylidedeniphosphonic Acid (OEDP)
Оксиэтилидендифосфоновая кислота(ОЭДФ -кислота )
Ntim thiab Cia
HEDP kua: 200L yas nruas, IBC (1000L), cov neeg siv khoom xav tau.
HEDP khoom: 25kg / hnab, cov neeg siv khoom xav tau.
Cia rau kaum ob lub hlis nyob rau hauv chav tsev shady thiab qhuav qhov chaw.
Kev Tiv Thaiv Kev Nyab Xeeb
Acidity, Tsis txhob sib cuag nrog lub qhov muag thiab tawv nqaij, ib zaug tiv tauj, yaug nrog dej.
Kev siv
HEDP yog siv los ua nplai thiab kev tiv thaiv corrosion nyob rau hauv cov dej txias txias, roj teb thiab qis - siab boilers hauv teb xws li hluav taws xob fais fab, tshuaj lom neeg kev lag luam, metallurgy, chiv, thiab lwm yam. Hauv kev lag luam dyeing, HEDP yog siv los ua peroxide stabilizer thiab dye- kho tus neeg sawv cev; Hauv uas tsis yog -cyanide electroplating, HEDP yog siv los ua tus neeg sawv cev chelating. Qhov ntau npaum li cas ntawm 1-10mg / L yog nyiam raws li nplai inhibitor, 10-50mg / L raws li corrosion inhibitor, thiab 1000-2000mg / L ua tshuaj ntxuav. Feem ntau, HEDP yog siv ua ke nrog polycarboxylic acid.
Cim npe nrov: 1-hydroxyethylidene-1,1-diphosphonic acid, Tuam Tshoj 1-hydroxyethylidene-1,1-diphosphonic acid manufacturers, lwm tus neeg, Hoobkas
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