5 Izicaciso Ezifihliwe ku-COA yaseKorea Ezihlukanisa i-Silica Yokuxubha Amazinyo Esezingeni Eliphezulu kwi-Commodity Grade

Kwadalwa ngo Ngokwamukisa

Awudingi ukuba ngusokhemisi ukuze ufunde iSilica Certificate of Analysis. Kodwa udinga ukwazi ukuthi yiziphi izinombolo ezibalulekile. Lapho umkhiqizi womuthi wokuxubha waseKorea ebuyisela i-COA yomphakeli waseShayina ngezicelo zokulungiswa, akwenzi ngenxa yobunzima. Bahlunga uhlobo oluthile lomkhiqizo — uhlobo olungabangeli ukwehluleka kokwakheka, izikhalo zabathengi, noma izinkinga zokulawula ezinyangeni eziyi-18 ngemuva kokukhiqizwa.

Nayi imininingwane emihlanu ku-COA ebhekiswe eKorea ekutshela ukuthi ubheka i-silica eqhutshwe ngokwezinga eliphezulu yomuthi wokuxubha noma into evamile esikhwameni esihle.

Usosayensi we-QA ehlola uhlu lokuhlola lwamaphuzu amahlanu e-silica Certificate of Analysis ye-silica ekhishwe ngamakhemikhali esezingeni lamazinyo

1. Ukulahlekelwa Ngokomisa ku-145°C — Hhayi ku-105°C

Lokho okusho ku-COA: "Ukulahlekelwa Ngokomisa (145°C, 4 h): ≤5.0%"

Lokho abaphakeli abaningi baseShayina abakukhombisayo: "Ukulahlekelwa Ngokomisa (105°C): ≤8.0–10.0%"

Izinga lokushisa akulona iphutha lokuthayipha. Kuyindlela esheshayo eyedwa yokuhlukanisa i-silica yezinga le-USP-NF kusuka ezintweni zasekhaya. Ku-105°C, ukala umswakama okhululekile. Ku-145°C, ukala umswakama okhululekile kanye namanzi aboshiwe kanye namaqembu e-hydroxyl angaphezulu athinta indlela i-silica esebenzisana ngayo nama-humectants (i-sorbitol, i-glycerin) kanye nezinto zokuqinisa kusisekelo somuthi wamazinyo.

Kungani abathengi baseKorea benakekela: umuthi wamazinyo uhlala eshalofini iminyaka emi-2–3. I-silica enokukhululwa komswakama oboshiwe okuphezulu ingabangela ukugqwala kweshubhu, ukugqwala kwesivalo, ukushintsha kwe-viscosity, kanye nokuhlukaniswa kwezigaba. I-LOD ka-145°C engaphansi kuka-5% isho ukuthi i-silica izinzile ekwakhiweni phakathi nayo yonke impilo yeshalofu.

Isixwayiso: Uma i-COA yomhlinzeki ibala i-LOD ku-105°C kodwa hhayi ku-145°C, kungenzeka ukuthi abakaze bayenze inhlolo yokuhlola ye-USP. Cela umphumela ka-145°C/4 h ngaphambi kokuba uzibophezele kukhonteyina.

2. I-Chloride Engaphansi kuka-0.1%

Lokho okusho ku-COA: "I-Chloride: <0.1%"

Lokho i-QB/T 2346 ekuvumelayo: "I-Chloride: ≤0.3%"

I-precipitated silica yenziwa ngokusabela kwe-sodium silicate ne-sulfuric acid. I-sodium chloride iwumkhiqizo oyinsalela. Ku-0.3%, i-chloride ayinabungozi ephepheni. Ku-tube yomuthi wokuxubha amazinyo, indaba ihlukile.

I-chloride isheshisa ukugqwala kwezinto zangaphakathi zamashubhu e-aluminium kanye nezingxenye zensimbi zokukhipha. Ingakhiqiza iphunga elincane elinosawoti elingabonakali ekuhlolweni kwelabhorethri kodwa elibonakala kalula kumthengi oxubha amazinyo. Futhi ingasebenzisana ne-sodium monofluorophosphate, inciphise i-fluoride etholakalayo ngokuhamba kwesikhathi. Ama-brand aseKorea — ikakhulukazi lawo adayisa imithi yokuxubha amazinyo ebucayi kanye neyezingane — acacisa ukuthi i-chloride ibe ngaphansi kuka-0.1% ngoba sezifunde lezi zifundo ngendlela enzima. Ukufinyelela lapho kudinga izigaba zokugeza ezengeziwe ezishiywa abakhiqizi bezinto zokudayisa ukuze bonge izindleko.

Umdwebo ocacisayo wama-ion e-chloride ne-sulfate egqwala ingaphakathi leshubhu lamazinyo le-aluminium

3. I-Sulfate Engaphansi kuka-0.5% — Kubalwe Ngokwehlukile

Okusho ku-COA: "Sulfate: <0.5%"

Okuboniswa yi-QB/T 2346: "Usawoti Wonke (njenge-Na₂SO₄ + NaCl): ≤2.0%"

Lena ilayini ekhohlisayo kakhulu ku-COA yaseShayina. "Usawoti wonke ≤2.0%" kuzwakala kukuhle kuze kube yilapho uqaphela ukuthi kuhlanganisa i-sulfate ne-chloride ndawonye. Umkhiqizo ungaba ne-sulfate engu-1.8% ne-chloride engu-0.1% futhi usadlule — kodwa leyo sulfate engu-1.8% izodala izinkinga zangempela:

• Ukulahlekelwa ukusobala: Kumuthi wamazinyo we-gel, i-sulfate encibilikile ithinta ukufanisa inkomba yokukhanya, kwenza i-gel ecwebezelayo njengekristalu ibe ngeyefu

• Ukunambitha: I-sodium sulfate inokunambitha okubabayo, okunomuthi emazingeni aphezulu

• Ukusebenzisana kwe-fluoride: Ama-ion e-sulfate ayancintisana ne-fluoride ku-matrix yokwakheka

• Ukugqwala kweshubhu: I-sulfate inolaka kakhulu kune-chloride kwi-aluminium engafakwanga umugqa

Abathengi baseKorea bafuna i-sulfate njengento ehlukile emgqeni wokugcina ngaphansi kuka-0.5%. Uma umphakeli wakho ebika kuphela usawoti ophelele, usuke ungaboni lutho.

4. I-pH 6.0–8.0 — Iwindi Elivikela I-fluoride

Lokho okushiwo ku-COA: "pH (5% slurry): 6.0–8.0"

Lokho i-QB/T 2346 ekuvumelayo: 5.5–8.5 kuye ngezinga

I-pH yomuthi wokuxubha ibaluleke kakhulu kunalokho abakhiqizi abaningi abakucabangayo. Ngaphansi kwe-pH 6.0, i-sodium monofluorophosphate ingahlukaniswa, kunciphise i-fluoride etholakalayo. Ngaphezu kwe-pH 8.0, ukwakheka kungacasula ulwelwesi lomlomo oluzwelayo futhi kusebenzisane nezinhlanganisela ze-flavour ezine-asidi. Iwindi lika-6.0–8.0 liyindawo ekahle yokuzinza kwe-fluoride, ukunethezeka komsebenzisi, kanye nokugcina i-flavour.

Ukufinyelela ku-6.0–8.0 akunzima eqenjini elilodwa. Ukufinyelela kukho wonke amaqembu — nge-standard deviation engaphansi kuka-0.3 — kudinga ukulawulwa kwe-pH okuvaliwe ngesikhathi sokukhishwa kanye nokugeza kokugcina. Abakhiqizi bezinto ezijwayelekile bavame ukusebenzisa i-pH noma yikuphi ukusuka ku-5.5 kuya ku-8.5 futhi bavumele i-COA ikhombise noma yini ephumayo.

5. I-Mercury ku-≤1 ppm — Ukuhlolwa Okungakenziwa Abathengisi Abaningi

Lokho okusho kukucaciso lwaseKorea: "I-Mercury: ≤1.0 ppm"

Lokho okudingwa yi-QB/T 2346: Lutho. I-Mercury ayifakiwe.

IKhodi Yezithako Zokudla yaseKorea igunyaza umkhawulo we-mercury ongu-1 ppm we-silicon dioxide. Ama-COA amaningi aseShayina awafaki i-mercury nhlobo ngoba izinga lasekhaya aliyidingi. Lokhu kudala igebe eliyingozi: umthwalo ungathunyelwa 100% ngokuhambisana ne-QB/T 2346 kodwa usenqatshwa emngceleni waseKorea ngenxa yedatha ye-mercury engekho.

Ngokwesimo, i-mercury ingena ku-silica ngokungcola okuncane ku-sodium silicate feedstock (ikakhulukazi uma i-silicate isuselwa emithonjeni yamaminerali ene-cinnabar noma okunye ukungcola okune-Hg). Abahlinzeki abathembekile bahlola yonke i-batch noma ngesikhathi esiqinisekisiwe besebenzisa i-ICP-MS noma ukuhlaziywa kwe-mercury okuqondile. Uma umhlinzeki wakho engakwazi ukukubonisa umbiko wokuhlolwa kwe-mercury onomkhawulo wokutholwa ongaphansi kwe-1 ppm, akakalungeli imakethe yaseKorea.

Ukuhlolwa kwelabhorethri ye-ICP-MS kwamasampula e-silica ekhishwe ngamakhemikhali ukuze kutholakale ukungcola kwe-mercury engaphansi kwe-1 ppm

Isengezo: Umugqa Ojwayelekile ku-COA

Bheka inkambu ethi "Standard" ku-COA. Umkhiqizo ojwayelekile ufundeka kanje: "QB/T 2346-2015". Umkhiqizo olungele iKorea ufundeka kanje: "USP-NF, QB/T 2346-2015" — futhi ngezinye izikhathi wengeza i-Korean Food Additives Code.

Leyo layini eyodwa ikutshela ukuthi umhlinzeki uhloliwe abathengi bamazwe ngamazwe, ulungise inqubo yakhe ukuze ihlangabezane nezimfuneko ze-pharmacopeial, futhi akacabangi ngokuthi ikhasimende lakho lifunani.

Indlela Yokusebenzisa Lolu Hlu Lokuhlola

Ngaphambi kokuvumela noma yikuphi ukuthunyelwa kwe-silica eKorea, khipha i-COA bese uhlola le migqa emihlanu:

1. Ukulahlekelwa kokomisa ku-145°C, amahora angu-4 — ≤5.0%?

2. I-Chloride — <0.1%?

3. I-Sulfate — ebhalwe ngokwehlukana, <0.5%?

4. I-pH (i-slurry engu-5%) — 6.0–8.0?

5. I-Mercury — ihloliwe, ≤1 ppm?

Uma noma yimuphi umugqa ungekho noma ungaphandle komkhawulo, i-silica isezingeni lempahla evamile — kungakhathaliseki ukuthi iwebhusayithi yomhlinzeki ithini. I-silica yamazinyo yekhwalithi ephezulu ayichazwa ngentengo noma igama lomkhiqizo. Ichazwa yilezi zinombolo ezinhlanu, futhi kufanele zibe ku-COA noma zingabi kho.

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