Etidronic Acid/ HEDP/CAS: 2809-21-4
Nkọwa Dị Mkpirikpi:
Aha ngwaahịa: Etidronic Acid
CAS: 2809-21-4
MF: C2H8O7P2
MW: 206.03
ỤDỊ:
Njupụta: 1.45 (60% aq.)
Ebe ọkụ: 198~199℃
Ngwaahịa dị ọcha bụ kristal ọcha. Ngwaahịa ụlọ ọrụ mmepụta ihe enweghị agba ma ọ bụ odo odo dị nro. Ọ na-agbaze ngwa ngwa na mmiri ma na-agbazekwa na methanol na ethanol. Hydroxyethylidene diphosphonic acid bụ ihe kemịkalụ a na-ejikarị eme ihe ma a na-ejikarị ya eme ihe na ọgwụgwọ mmiri ụlọ ọrụ mmepụta ihe, ngwaahịa nhicha ụlọ na ngwaahịa nlekọta onwe onye.
nkọwapụta
| ihe | Nkọwapụta |
| Ọdịdị | Kristal ọcha |
| Ọdịnaya dị n'ọrụ (dị ka asịd)% | ≥98.0% |
| Ọdịnaya na-arụ ọrụ (dị ka HEDP.H)20)% | ≥90.0% |
| PH(1%) | ≤2 |
| Asịd phosphoric (dị ka PO43-)% | ≤0.5 |
| Chloride (dị ka CI-)ppm | ≤100 |
| Fe ion ppm | ≤5 |
| Asịd phosphorous (dị ka PO33-)% | ≤0.8 |
Ojiji
Ngwaahịa a bụ isi ihe eji emepụta electroplating na-enweghị cyanide. Mgbe e mere ya ka ọ bụrụ ihe ngwọta electroplating ọla kọpa na-enweghị cyanide, ọ nwere ike njikọ dị mma mgbe ọ na-etinye oyi akwa ọla kọpa ozugbo na sodium iron. Mkpuchi ahụ dị nro ma nwee ezigbo mma. N'ozuzu, usoro nke ngwaahịa ahụ nwere ọdịnaya nke 60% bụ 100 - 120 ml/L. Usoro nke copper sulfate bụ 15 - 20 g/L. Na mgbakwunye, tupu electroplating, mikpuo akụkụ plating ahụ na ngwọta 1% - 2% nke ngwaahịa a iji mee ka akụkụ plating ahụ ghọọ ọnọdụ arụ ọrụ. Electroplating mgbe usoro a gasịrị nwere ike ime ka mmetụta ahụ ka mma. Hydroxyethylidene diphosphonic acid (HEDP) bụ ụdị ihe mgbakwunye electroplating ọhụrụ na-enweghị chlorine. A na-eji ya dị ka ihe nnọchi anya bụ isi maka ịkwado mma mmiri na sistemụ mmiri oyi na-agagharị, na-arụ ọrụ nke mgbochi corrosion na mgbochi nha. Ngwaahịa a bụ otu n'ime ihe nnọchi anya mmiri polyphosphonic acid organic. E nwekwara ụdị ngwaahịa ndị ọzọ a na-emepụta na China, dịka amino trimethylene phosphonic acid (ATMP): [CH2PO(OH)2]3N, na ethylenediamine tetra(methylene phosphonic acid) (EDTMP), wdg. E mepụtara asịd polyphosphonic organic na ngwụcha afọ 1960 ma a mata ha n'ihe dị ka afọ 1970. Mmalite nke ụdị ihe ndị a na-eme ka mmiri dị ọcha emeela ka teknụzụ ọgwụgwọ mmiri dị elu. Ma e jiri ya tụnyere polyphosphates inorganic, asịd polyphosphonic organic nwere ezigbo nkwụsi ike kemịkalụ, ọ dịghị mfe hydrolyze, ọ nwere ike iguzogide okpomọkụ dị elu, chọrọ obere dose nke ihe ahụ, ma nweekwa ihe onwunwe nke ma corrosion na scale inhibitor. Ha bụ ụdị ihe mgbochi corrosion cathodic na ụdị ihe mgbochi stoichiometric scale. Mgbe ejiri ya na ihe ndị ọzọ na-eme ka mmiri dị ọcha, ha na-egosi mmetụta synergistic zuru oke. Ha nwere ikike chelating dị mma maka ọtụtụ ion ígwè dị ka calcium, magnesium, copper, na zinc. Ha na-ebelata nnu ndị na-adịghị n'ime ígwè ndị a nke ọma, dịka CaSO4, CaCO3, MgSiO3, wdg. Ya mere, a na-ejikarị ha eme ihe n'ụzọ dị ukwuu na teknụzụ ọgwụgwọ mmiri. A na-eji ihe ndị na-eme ka mmiri dị n'ime mmiri eme ihe maka serine na pyranose echekwara.
Nkwakọ ngwaahịa na Mbupu
Nkwakọ ngwaahịa: 25kg dịka ihe ndị ahịa chọrọ.
Mbupu: bụ nke kemịkalụ a na-ahụkarị ma nwee ike ibuga ya site na ụgbọ okporo ígwè, oké osimiri na ikuku.
Debe ma chekwaa
Ndụ nchekwa: ọnwa 24 site na ụbọchị emepụtara ya na ngwugwu mbụ e meghebeghị emepe echekwara n'ebe dị jụụ na kpọrọ nkụ nke na-anaghị anwụ kpọmkwem, mmiri.
Ụlọ nkwakọba ihe ikuku, Ọkụ dị ala, Nkewapụrụ na ihe ndị na-eme ka oxidants, asịd.
