Thiourea
Chidule cha Zamalonda
Dzina la Mankhwala: Thiourea
Nambala ya CAS: 62-56-6
Fomula ya Molekyulu: CH₄N₂S
Kulemera kwa Mamolekyulu: 76.12 g/mol
Mawonekedwe: Ufa woyera wa kristalo kapena ma prill; wopanda fungo kapena wokhala ndi fungo lofanana ndi la ammonia
Kusungunuka: Kusungunuka kwambiri m'madzi (137 g/L pa 20°C), kumasungunuka mu ethanol, kumasungunuka pang'ono mu ether ndi acetone
Thiourea ndi mankhwala ofunikira a sulfure okhala ndi kapangidwe kofanana ndi urea (m'malo mwa atomu ya okosijeni ndi sulfure). Amawonetsa mphamvu yapadera ya mankhwala, zomwe zimapangitsa kuti ikhale yopangira zinthu zosiyanasiyana komanso yowonjezera m'mafakitale, ulimi, ndi labotale. Ndi mphamvu zokhazikika komanso mphamvu zowongolera, imakwaniritsa miyezo yokhwima yaukadaulo pazochitika zosiyanasiyana zogwiritsidwa ntchito.
Katundu Wofunika & Ubwino
| Katundu | Kufotokozera | Ubwino Wapakati |
| Malo Osungunuka | 176 - 178°C (imawola pamwamba pa 180°C) | Kukhazikika kwa kutentha mkati mwa kutentha kwanthawi zonse, kupewa kuwonongeka msanga |
| pH Value (1% yankho lamadzi) | 6.0 - 7.5 | Yosalowerera kapena kukhala ndi asidi pang'ono, imagwirizana ndi zinthu zambiri popanda kuyambitsa dzimbiri kapena kusalingana kwa pH |
| Chiyero (mphindi) | 99.0% (kalasi yamafakitale); 99.5% (kalasi yamankhwala) | Kuyera kwambiri kumachepetsa zinyalala zomwe zingakhudze magwiridwe antchito a chinthucho kapena kuyambitsa zotsatira zoyipa |
| Kuchuluka kwa Heavy Metal (kuchuluka) | 10 ppm (zonse za Pb, Cd, Hg) | Zimakwaniritsa miyezo ya chilengedwe ndi chitetezo, zoyenera kugwiritsidwa ntchito pokhudzana ndi chakudya kapena mankhwala |
| Hygroscopicity | Yotsika (imayamwa chinyezi chochepa kutentha kwa chipinda) | Zosavuta kusunga ndi kusamalira popanda kuphwanyika, kuonetsetsa kuti zinthu zikuyenda bwino pakapita nthawi |
Mapulogalamu Odziwika
Mankhwala apadera a Thiourea (monga kuthekera kopanga zinthu zomangira ndi zitsulo, kugwira ntchito ngati chochepetsera, ndikuchita nawo kupanga heterocyclic) zimapangitsa kuti ikhale yofunika kwambiri m'mafakitale osiyanasiyana:
3.1 Zamalonda ndi Zachitsulo
Kuyeretsa ndi Kuyika Zitsulo: Kumagwiritsidwa ntchito ngati chopangira zinthu zosakaniza mu kuyeretsa golide ndi siliva (monga, mu kuchotsa golide wopanda cyanide) kuti asungunule zitsulo zamtengo wapatali kuchokera ku miyala. Kumagwira ntchito ngati chowunikira komanso chokhazikika mu nickel, mkuwa, ndi zinc electroplating, ndikuwonjezera kufanana kwa utoto ndi kunyezimira.
Kuletsa Kudzimbidwa: Kuwonjezeredwa ku zoziziritsira mafakitale, njira zophikira, ndi madzi ogwirira ntchito zachitsulo kuti apange filimu yoteteza pamwamba pa zitsulo, kuteteza dzimbiri ndi dzimbiri la asidi.
3.2 Kupanga Mankhwala
Mankhwala ndi Ma Agrochemicals: Njira yofunika kwambiri popanga ma sulfonamides (mankhwala oletsa mabakiteriya), mahomoni a chithokomiro, ndi mankhwala ophera udzu (monga mankhwala ophera udzu ochokera ku thiourea oletsa udzu m'mbewu).
Kupanga Utoto ndi Utoto: Amagwiritsidwa ntchito popanga zinthu zochokera ku thiazole ndi imidazole, zomwe ndi zigawo zofunika kwambiri za utoto wa azo ndi utoto wachilengedwe (monga nsalu, mapulasitiki, ndi inki).
Makampani Opanga Mphira: Amagwira ntchito ngati chowonjezera mphamvu ya vulcanization ndi modifier, kuwonjezera kusinthasintha kwa mphira, kukana kutentha, komanso kukana kukalamba m'matayala, zisindikizo, ndi zinthu za mphira.
3.3 Kugwiritsa Ntchito Zachipatala ndi Zapadera
Chemistry Yosanthula: Imagwiritsidwa ntchito ngati reagent kuti izindikire ndikuwerengera zitsulo zolemera (monga, selenium) kudzera mu mapangidwe ovuta.
Kujambula Zithunzi: Kumagwira ntchito ngati chothandizira kukonza ndi kuchepetsa zithunzi zakuda ndi zoyera, kuthandiza kukhazikika kwa zithunzi ndikuchotsa siliva wosadziwika.
Chitetezo ndi Kutsatira Malamulo
4.1 Malangizo Oteteza
Kugwira: Pewani kupopera fumbi kapena kukhudzana mwachindunji ndi khungu/maso. Valani magalasi oteteza fumbi, magolovesi a nitrile, ndi chigoba chopumira (N95 kapena kupitirira apo) m'malo opanda mpweya wabwino. Sambani m'manja bwino ndi sopo ndi madzi mutakhudza.
Kusungira: Sungani m'nyumba yosungiramo zinthu yozizira, youma, komanso yodutsa mpweya wabwino kutali ndi ma asidi amphamvu (monga hydrochloric acid), zinthu zophera poizoni (monga hydrogen peroxide), ndi malawi otseguka. Gwiritsani ntchito HDPE yotsekedwa kapena ma drum a ulusi kuti mupewe kuyamwa ndi kuipitsidwa kwa chinyezi.
Kutaya: Kutaya zinyalala kapena zinthu zina zosagwiritsidwa ntchito motsatira malamulo a zachilengedwe (monga zinyalala za mafakitale zomwe sizili zoopsa; kupewa kutulutsa zinyalala m'nthaka kapena m'madzi).
4.2 Kutsatira Malamulo
Amatsatira malamulo a REACH (EU) (olembetsedwa pansi pa mndandanda wa REACH SVHC, palibe zoletsa zogwiritsidwa ntchito m'mafakitale).
Zimakwaniritsa Miyezo ya FDA (yomwe imagwiritsidwa ntchito pokhudzana ndi chakudya, mwachitsanzo, ngati choletsa dzimbiri mu zida zopangira chakudya).
Zimagwirizana ndi Miyezo ya USP/NF (gulu la mankhwala) kuti zigwiritsidwe ntchito popanga mankhwala.
Yovomerezedwa ndi ISO 9001 (kasamalidwe kabwino) ndi ISO 14001 (kasamalidwe ka chilengedwe) pa ntchito zopangira.
Mfundo Zazikulu za Technical Data Sheet (TDS)
| Chizindikiro | Giredi ya Mafakitale | Kalasi ya Mankhwala | Njira Yoyesera |
| Chiyero | ≥99.0% | ≥99.5% | Chromatography Yamadzimadzi Yogwira Ntchito Kwambiri (HPLC) |
| Chinyezi Chokwanira | ≤0.5% | ≤0.3% | Karl Fischer Titration |
| Zamkati mwa Phulusa | ≤0.1% | ≤0.05% | Kusanthula kwa Gravimetric |
| Chitsulo (Fe) | ≤5 ppm | ≤2 ppm | Kuzindikira kwa Atomic Absorption Spectroscopy (AAS) |
| Zinthu Zosasungunuka M'madzi | ≤0.01% | ≤0.005% | Kusefa ndi Kuuma |
N’chifukwa Chiyani Tiyenera Kusankha Thiourea Yathu?
Magiredi Opangidwa Mwamakonda: Timapereka magiredi a mafakitale, azamankhwala, ndi a labotale kuti tikwaniritse zosowa za makasitomala (monga, kuchuluka kwa zitsulo zolemera zochepa zomwe zimagwiritsidwa ntchito ndi mankhwala).
Kupereka Kokhazikika: Malo athu opangira zinthu (omwe ali ndi mphamvu zokwana matani 5,000 pachaka) amatsimikizira kuti zinthuzo zimafika pa nthawi yake, ngakhale pa maoda ambiri (20-500 kg).
Thandizo la Ukadaulo: Gulu lathu la akatswiri a zamankhwala limapereka upangiri wa malonda asanayambe kugulitsa (monga, kufananiza mapulogalamu) ndi chithandizo cha pambuyo pogulitsa (monga, kuthetsa mavuto okhudzana ndi kukonza).
Kupanga Kosawononga Chilengedwe: Njira yathu yopangira zinthu imachepetsa madzi otayira ndi mpweya woipa, mogwirizana ndi zolinga zokhazikika padziko lonse lapansi.
Lumikizanani nafe
Kuti mudziwe mitengo, zitsanzo, kapena zikalata zonse za TDS/COA, funsani gulu lathu logulitsa:
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