Aluminom Monostearate CAS 7047-84-9 Assay (Al2O3) 14.5 ~ 16.5%

Aluminom monostearate
Dihydroxy (stearato) aluminom [7047-84-9].
Aluminom Monostearate bụ ngwakọta nke aluminom nwere ngwakọta nke acids organic siri ike enwetara site na abụba, yana nke kachasị nke mgbanwe nha nke aluminom monostearate na aluminom monopalmitate.O nwere ihe nke na-erughị 14.5 pasent na ọ bụghị karịa 16.5 pasent nke Al2O3, gbakọọ na a mịrị amị ndabere.
Nkwakọ ngwaahịa na nchekwa - Chekwaa n'ime igbe emechiri nke ọma.
njirimara-
A: Kpoo 1 g na ngwakọta nke 25 mL mmiri na 5 ml nke hydrochloric acid maka 1 hour, dochie mmiri ka ọ na-ekpochapụ: fatty acids na-atọhapụ, na-ese n'elu dị ka mmanu oyi akwa n'elu mmiri mmiri, na mmiri. oyi akwa na-anabata ule maka Aluminom <191>.
B: Gwakọta nke ọma 25 g na 100 ml nke ether na flask 500-mL, tinye 150 ml nke 3 N hydrochloric acid, tinye condenser nke mmiri jụrụ oyi, na ikpo ọkụ na mmiri ịsa ahụ n'okpuru reflux maka nkeji iri na ise.Jụụ, ma bufee akwa abụọ ahụ na nkewa site na enyemaka nke 100 ml ọzọ nke ether.Ma jijiji nke ukwuu, ma kwe ka akwa ahụ kewaa.Wepu mmiri oyi akwa, ma saa akwa ether na akụkụ atọ 30-mL nke mmiri.Nyefee akwa akwa ether na obere beaker, kpoo ọkụ na mmiri ịsa mmiri ruo mgbe ether ewepụla na fatty acids doro anya, ma kpoo acids na 105 ° maka nkeji 20: okpomọkụ siri ike (lee Fats and Fixed oil 401) nke Fatty acids adịghị n'okpuru 54 °.
Ọnwụ na ihicha <731>-Kọchaa ya na 80 maka awa 16: ọ na-efunahụ karịa 2.0% nke ibu ya.
Arsenic, Usoro m <211> - Kwadebe Nkwadebe Nnwale dị ka ndị a.Na 3.75 g tinye 12.5 ml nke hydrochloric acid na 0,5 ml nke bromine TS, na ikpo ọkụ na uzuoku bat ruo mgbe a transperent oyi akwa nke gbazee fatty acid ụdị.Tinye 50 ml mmiri, kpoo ọkụ na efere ọkụ ruo mgbe olu dị ihe dị ka 25 ml, na nyochaa mgbe ọ na-ekpo ọkụ.Jụụ, gbanye nzacha na mmiri na 50 ml, na 10-mL aliquot nke ngwọta a tinye 2.5 ml nke hydrochloric acid, wee jiri mmiri na-agbaze na 55 ml: ihe ngwọta na-emezu ihe achọrọ nke ule ahụ, mgbakwunye nke 20. mL nke 7 N sulfuric acid akọwapụtara maka usoro ewepụrụ.Oke bụ 4 ppm.
Ọla dị arọ-Na 2 g dị n'ime iko 250-mL tinye 20 ml mmiri na 10 ml nke hydrochloric acid.Tinye obere oghere n'olu nke flask ahụ, ma sie nwayọọ nwayọọ, dochie mmiri ka ọ na-ekpochapụ, ruo mgbe acid fatty kewapụrụ na oyi akwa doro anya.Jụọ ngwa ngwa site n'ịtụgharị n'okpuru iyi mmiri oyi ruo mgbe acid fatty siri ike.Dechaa site na nzacha ejiri 3 N hydrochloric acid saa ya na mbụ, saa ya ruo mgbe nzacha na nzacha jikọtara ya ruru 50 ml, wee gwakọta ya.Na 20 ml nke nzacha a na-agbakọ na-agbakwunye 6 N ammonium hydroxide, na-agbada, ruo mgbe turbidity na-adịgide adịgide na-etolite.Tinye 1 N acetic acid ruo mgbe mmiri ozuzo na-agbaze, wee gbakwunye 2 mL karịa, ma gbakwunye mmiri iji mee 40 ml.Tinye 1.2 mL nke thioacetamide-glycerin base TS na 2 mL nke pH 3.5 Acetate Buffer, ma kwe ka guzoro maka nkeji 5: agba aja aja ọ bụla a na-emepụta adịghị agba ọchịchịrị karịa nke nchịkwa nchịkwa nke a kwadebere site na 10 mL nke nzacha mmiri na 2 mL. nke Ngwọta Ngwọta Ọkọlọtọ (lee Heavy Metals <231>) nwere 10 µg nke lead kwa ml, wee gbanye ya na mmiri ruo 20 ml wee mesoo ya n'otu ụzọ ahụ.Oke oke bụ 50 μg kwa g.
Assay-Tụrụ nke ọma 5 g nke Aluminom Monostearate na platinum crucible kpuchiri ekpuchi nke agbanyere na mbụ maka nkeji 20, jụrụ oyi n'elu magnesium perchlorate na-ekpo ọkụ ma tụọ ya.Kpoo ite ahụ nke ọma, na-ahapụghị ka ihe atụ ahụ gbanye ọkụ, ma jiri nwayọọ nwayọọ mụbaa okpomọkụ ruo mgbe ntụ na-acha ọcha.Na-agbanye ntụ maka nkeji 20 mgbe e wepụrụ ihe ndị dị ndụ, ma dị jụụ.Gbakwunye mmiri 15 ml, jiri obere iko elekere kpuchie ite ahụ, wee sie nwayọ maka nkeji 5, jiri obere mkpara na-akpali akpali mebie nnukwu kpọmkpọ ntụ ọ bụla.Wepu ihe ngwọta ahụ site na mpempe nzacha na-enweghị ntụ, na-ejigide ọtụtụ ntụ n'ime ite ahụ.Tinyegharịa mmịpụta ahụ na mmiri ugboro abụọ, na-agafe ihe ngwọta site na otu nzacha.Nyefee ntụ na nzacha site na mmiri dị mma, ma jiri mmiri ọkụ na-asa ihe ahụ na ihe fọdụrụ ugboro atọ.Nyefee akwụkwọ nzacha na ihe fọdụrụ na crucible, kpọrọ nkụ, ma gbanye ọkụ maka nkeji 20 mgbe akwụkwọ nzacha ahụ gbachara.Na-esote oge mgbanye ọkụ, kpuchie crucible, dị jụụ na magnesium perchlorate na-ekpo ọkụ maka nkeji iri na ise, ma tụọ ihe fọdụrụ nke Al2O3 ngwa ngwa.Tinyegharịa mgbanye ahụ ruo mgbe a ga-enweta ịdị arọ mgbe niile, na-eji oge mgbanye nkeji 20 na oge oyi nkeji iri na ise.Site na ịdị arọ nke ihe fọdụrụ na crucible, gbakọọ ọdịnaya nke Al2O3.