D-Serine CAS 312-84-5 HD-Ser-OH Assay 99.0~101.0% Factory High Quality

Acidity pH
Tora 0.30g yechigadzirwa ichi, wedzera 30ml yemvura kuti inyunguduke, uye kuyera maererano nemutemo (General mutemo 0631).Iko pH kukosha kunofanira kuva 5.5 ~ 6.5.
Transmittance of Solution
tora 1.0g yechigadzirwa ichi, wedzera mvura 20ml kuti inyunguduke, maererano neultraviolet-visible spectrophotometry (General mutemo 0401), sarudza transmittance pakureba kwe430mn, kwete pasi pe98.0%.
Chloride
Tora 0.25g yechigadzirwa ichi uye utarise maererano nemutemo (General mutemo 0801).Kuenzaniswa nemhinduro yekutonga yakagadzirwa ne5.0 ml yeyakajairwa sodium chloride mhinduro, haifanirwe kuve yakanyanya kuomeswa (0.02%).
Sulfate
Tora 1.0g yechigadzirwa ichi uye utarise maererano nemutemo (General mutemo 0802).Kuenzaniswa nemhinduro yekudzora yakagadzirwa 2.0 ml yeyakajairwa potassium sulfate solution, haifanirwe kuve yakanyanya kuomeswa (0.02%).
Ammonium Munyu
tora 0.10g yechigadzirwa ichi uye utarise maererano nemutemo (General mutemo 0808).Kuenzaniswa nemhinduro yekudzora yakagadzirwa 2.0 ml yeyakajairwa ammonium chloride mhinduro, haifanirwe kudzika (0.02%).
Mamwe maAmino Acids
Tora huwandu hwakakodzera hwechigadzirwa ichi, wedzera mvura kuti inyunguduke uye inyungurudze kuita mhinduro ine nezve 20mg pa lml seyedzo mhinduro;Tora 1ml yekuenzanisa kuyerwa uye uiise mu 200ml yekuyeresa flask, dilue kusvika pachiyero nemvura, zunza zvakanaka, sechigadziro chekutonga;Tora chiyero chakakodzera cheserine reference uye methionine reference maererano, uye nzvimbo mune imwechete yekuyeresa flask, mvura yakawedzerwa kuti inyunguduke uye yakanyungudutswa kugadzirira mhinduro ine inenge 0.4mg imwe neimwe pa1ml segadziriro-yakakodzera sarudzo.Zvinoenderana neyakatetepa layer chromatography (General 0502) bvunzo, tora mhinduro nhatu dziri pamusoro imwe neimwe 5 u1, zvichiteerana, pane imwechete silica gel G nhete layer plate, ine n-butanol-mvura-glacial acetic acid (3:1:1) yekusimudzira, mushure mekuiswa, kuomeswa kwemhepo, kupfapfaidza ninhydrin muacetone solution (1-50), kupisa pa80 ° C kusvika makwapa aonekwa, uye kuongorora nekukurumidza.Iyo yekudzora mhinduro inofanirwa kuratidza yakajeka nzvimbo, uye iyo system inoshanda mhinduro inofanirwa kuratidza maviri akapatsanurwa makwapa.Kana mhinduro yekuedza ichiratidza mavara asina kuchena, ruvara harufanire kunge rwakadzika (0.5%) kupfuura nzvimbo huru yemhinduro yekutonga.
Kurasika paKuomesa
tora chigadzirwa ichi, chakaoma pa105 ℃ kwemaawa matatu, kurasikirwa kwehuremu hakufaniri kudarika 0.2% (General mutemo 0831).
Residue paIgnition
Kwete kupfuura 0.1% (General mutemo 0841).
Iron Munyu
Tora 1.0g yechigadzirwa ichi uye utarise zvinoenderana nemutemo (General mutemo 0807).Kana ichienzaniswa neyakagadziriswa mhinduro yakagadzirwa ne0.001% yeyakajairwa iron solution, haizove yakadzika ().
Heavy Metals
Tora 2.G yechigadzirwa ichi, wedzera 23ml yemvura kuti inyunguduke, wedzera 2ml yeacetate buffer (pH3.5), uye tarisa maererano nemutemo (mutemo wekutanga wemitemo yakawanda 0821), ine simbi inorema haifaniri kudarika zvikamu gumi. pamiriyoni.
Arsenic Munyu
Tora chigadzirwa ichi 2. G, wedzera mvura 23ml yakanyungudutswa, wedzera hydrochloric acid 5ml, maererano nemutemo wekuongorora (General Principles 0822 mutemo wekutanga), inofanira kuenderana nemitemo (0.0001%).
Bacterial Endotoxin
Tora chigadzirwa ichi, tarisa maererano nemutemo (General 1143), huwandu hwe endotoxin mune imwe neimwe lg serine inofanira kunge iri pasi pe12EU.(Yejekiseni)
312-84-5 - Content Determination
Tora chigadzirwa ichi chinenge 0.1g, kunyatsoyera kuyera, wedzera anhydrous formic acid 1 ml kuti inyunguduke, wedzera glacial acetic acid 25ml, maererano ne potentiometric titration method (General 0701), ine perchloric acid titration solution (0.1 mol/L) titration, uye mhedzisiro yetitration yakagadziriswa nebvunzo isina chinhu.Imwe neimwe 1 ml ye perchloric acid titration solution (0.1 mol / L) inoenderana ne10.51 mg yeC3H7N03.