EDTA disodium iyọ (EDTA 2NA), CAS # 6381-92-6
Eru: EDTA 2NA
CAS #: 6381-92-6
Fọọmu Molecular: C10H14N2O8Na2.2H2O
Ìwọ̀n molikula: 372
Nlo: Kan si detergent, adjuvant dyeing, oluranlowo processing fun awọn okun, ohun ikunra, aropo ounjẹ, ajile ogbin ati bẹbẹ lọ.
Awọn pato:
Irisi: funfun lulú tabi funfun kirisita lulú
Òórùn: Kò sí òórùn
Kloride (Cl): ≤0.05%
Sulfate (SO4): ≤0.05%
Iron(Fe): ≤0.001%
Irin Eru (Pb): ≤0.001%
PH: 4-6
Mimọ: ≥99.0%
Ojuami yo: 252℃
Solubility: tiotuka ninu omi, die-die tiotuka ni ethanol, ether.
Iṣakojọpọ: 25KG / baagi
Ohun elo:
EDTA 2NA jẹ oluranlowo idiju pataki fun awọn ions irin ti o ṣaju ati awọn irin yiya sọtọ.A lo ọja yii bi ojutu ti n ṣatunṣe bleaching fun idagbasoke ohun elo aworan awọ ati sisẹ, ati iranlọwọ dyeing, oluranlowo itọju okun, ohun ikunra, oogun, ounjẹ, iṣelọpọ microfertilizer kemikali ogbin, anticoagulant ẹjẹ, oluranlowo complexing, detergent, stabilizer, roba sintetiki, polymerization. initiator ati eru irin pipo onínọmbà oluranlowo, bbl Ninu eto ibẹrẹ idinku chlorinated fun SBR polymerization, disodium EDTA ti wa ni lo bi awọn kan paati ti nṣiṣe lọwọ oluranlowo, o kun fun complexing irin ions ati idari awọn oṣuwọn ti polymerization lenu.
Ilana iṣelọpọ:
1.Slowly fi adalu iṣuu soda cyanide ati formaldehyde si ojutu olomi ti ethylenediamine ni ipin kan, ki o si kọja afẹfẹ ni 85 ℃ labẹ titẹ dinku lati yọ amonia gaasi kuro.Lẹhin ifesi, ṣatunṣe iye Ph si 4.5 pẹlu sulfuric acid ogidi, ati lẹhinna decolorize, àlẹmọ, ṣojumọ, crystallize ati lọtọ, ati gbẹ lati gba ọja ti o pari.
2.Mix 100kg ti chloroacetic acid, 100kg ti yinyin ati 135kg ti 30% NaOH ojutu, fi 18kg ti 83% ~ 84% ethylenediamine labẹ gbigbọn, ki o si pa a ni 15 ℃ fun 1h.Laiyara ṣafikun ojutu 30% NaOH ni awọn ipele titi ti oludasiṣẹ yoo di ipilẹ, ki o tọju ni iwọn otutu yara fun wakati 12.Ooru si 90 ℃, ṣafikun erogba ti a mu ṣiṣẹ lati de awọ.Filtrate ti wa ni titunse si 4.5 Ph pẹlu hydrochloric acid ati ki o ogidi ati filtered ni 90 ℃;filtrate ti wa ni tutu, crystallized, niya ati ki o fo, ati ki o si dahùn o ni 70 ℃ lati gba awọn ti pari ọja.
3.Made nipasẹ iṣẹ ti ethylenediaminetetraacetic acid ati iṣuu soda hydroxide ojutu: Ni 2L flask ifaseyin ti o ni ipese pẹlu aruwo, fi 292g ethylenediaminetetraacetic acid ati omi 1.2L.Fi 200mL ti 30% iṣuu soda hydroxide ojutu labẹ saropo ati ooru titi gbogbo iṣesi yoo fi pari.Ṣafikun 20% hydrochloric acid ati yomi si pH = 4.5, ooru si 90 ℃ ati ṣojumọ, àlẹmọ.Filtrate ti wa ni tutu ati awọn kirisita ti wa ni precipitated.Jade ati lọtọ, wẹ pẹlu omi distilled, gbẹ ni 70℃, ati gba ọja EDTA 2NA.
4.Add ethylenediaminetetraacetic acid ati omi si enameled ojò ifasẹyin, fi iṣuu soda hydroxide ojutu labẹ gbigbọn, ooru titi gbogbo iṣesi, fi hydrochloric acid si pH 4.5, ooru si 90 ° C ati idojukọ, àlẹmọ, filtrate ti wa ni tutu, àlẹmọ jade. awọn kirisita, wẹ pẹlu omi, gbẹ ni 70°C, ki o si gba EDTA 2NA.
