Tiourea
Tirohanga Whānui o te Hua
Ingoa Matū: Thiourea
Nama CAS: 62-56-6
Tātai Ngota: CH₄N₂S
Taumaha ngota: 76.12 karamu/mol
Āhua: Paura tioata mā, he kirikiri rānei; kāhore he kakara, he kakara paku rite ki te haukini rānei
Wairewatanga: Tino wairewa i roto i te wai (137 g/L i te 20°C), wairewa i roto i te etanoru, paku wairewa i roto i te etera me te āketo
He matū whanariki waro nui te Thiourea, he rite tōna hanganga ki te urea (e whakakapi ana i te ngota hāora ki te whanariki). He ahurei tōna tauhohenga matū, ā, he rauemi mata maha, he tāpiringa hoki puta noa i ngā mara ahumahi, ahuwhenua, me te taiwhanga. Nā ōna āhuatanga ā-tinana pumau me te tauhohenga ka taea te whakahaere, ka tutuki i a ia ngā paerewa kounga pakari mō ngā momo whakamahinga.
Ngā Āhuatanga Matua me ngā Painga
| Taonga | Whakatakotoranga | Painga Matua |
| Te Pūwāhi Rewa | 176 - 178°C (ka pirau i runga ake i te 180°C) | Te pumau o te wera i roto i ngā pāmahana tukatuka noa, e karo ana i te pirau wawe |
| Uara pH (1% wairewa) | 6.0 - 7.5 | Mai i te koretake ki te paku waikawa, ka hototahi ki te nuinga o ngā papa, engari kāore e puta he waikura, he taurite kore rānei o te pH. |
| Parakore (min) | 99.0% (taumata ahumahi); 99.5% (taumata rongoā) | Ka whakaitihia e te parakore teitei ngā poke ka pā ki te mahi a te hua, ka puta rānei ngā tauhohenga taha |
| Te Ihirangi o te Konganuku Taumaha (mōrahi) | 10 ppm (Pb, Cd, Hg katoa) | E tutuki ana i ngā paerewa taiao me te haumaru, e tika ana mō ngā tono e pā ana ki te kai, ki ngā tono rongoā rānei |
| Te ātete ki te wai | Iti (he iti noa te makuku e mimiti ana i te pāmahana rūma) | He ngāwari ki te penapena me te whakahaere, me te kore e piri, kia mau tonu ai te kounga i roto i te wā |
Ngā tono noa
Nā ngā āhuatanga matū ahurei o te Thiourea (hei tauira, te kaha ki te hanga matatini me ngā konganuku, te mahi hei kaiwhakaiti, me te whai wāhi ki te hanga heterocyclic) he mea nui rawa atu i roto i ngā ahumahi maha:
3.1 Ahumahi me te Whakarewa
Te Whakamahi me te Whakakikorua i te Mea Whakarewa: Whakamahia hei matū whakakoi i roto i te horoinga koura me te hiriwa (hei tauira, i roto i te tango koura kore-cyanide) hei whakarewa i ngā konganuku utu nui mai i ngā konganuku. He mea whakamārama me te whakaū i roto i te whakakikoruatanga hiko o te nikara, te parahi, me te konutea, hei whakapai ake i te ōritetanga me te kanapa o te paninga.
Te Ārai i te Waikura: Kua tāpirihia ki ngā wai whakamatao ahumahi, ki ngā otinga whakapūkara, me ngā wai mahi whakarewa hei hanga i tētahi kiriata tiaki i runga i ngā mata whakarewa, hei ārai i te waikura me te waikura waikawa.
3.2 Te Hanganga Matū
Rongoā me ngā Matū Ahuwhenua: He takawaenga matua i roto i te hanga sulfonamides (rongoā paturopi), homoni tairoi, me ngā patu taru (hei tauira, ngā patu taru i ahu mai i te thiourea hei whakahaere taru i roto i ngā hua).
Te Hanga Tae me te Pikitia: Whakamahia hei hanga i ngā matū thiazole me te imidazole, he wāhanga nui ēnei o ngā tae azo me ngā tae rauropi (hei tauira, mō ngā kakahu, kirihou, me ngā waituhi).
Ahumahi Rapa: Hei whakatere me te whakarerekē i te whakamomona, hei whakarei ake i te ngāwari o te rapa, te ātete ki te wera, me te ātete ki te koroheketanga i roto i ngā potae, ngā hiri, me ngā hua rapa.
3.3 Ngā Whakamahinga Taiwhanga me ngā Whakamahinga Motuhake
Matū Tātari: Whakamahia hei matū hei kimi me te ine i ngā konganuku taumaha (hei tauira, te selenium) mā te hanganga matatini.
Whakaahua: Hei kaiwhakamau me hei whakaiti i ngā whakaahua pango-mā, hei āwhina i te whakau i ngā whakaahua me te tango i ngā hiriwa halide kāore i kitea.
Haumaru me te Whakatutukitanga
4.1 Ngā Aratohu Haumaru
Te whakahaere: Āraia te manawa puehu, te pa tika rānei ki te kiri/kanohi. Mauria he mōhiti ārai puehu, he karapu nitrile, me te kopare manawa (N95, teitei ake rānei) ki ngā wāhi kāore i te pai te hau. Horoia pai ō ringaringa ki te hopi me te wai i muri i te pa atu.
Rokiroki: Rokirokihia ki roto i tētahi whare putunga hauhautanga, maroke, ā, he pai te hauhautanga, kia matara atu i ngā waikawa kaha (hei tauira, te waikawa hauwai), ngā matū whakahāora (hei tauira, te hauwai waikura), me ngā mura tuwhera. Whakamahia he HDPE hiri, he ipu muka rānei hei ārai i te mimiti me te poke o te makuku.
Te Whakakorenga: Whakakorea ngā para, ngā thiourea rānei kāore i whakamahia, kia rite ki ngā ture taiao ā-rohe (hei tauira, hei para ahumahi kore-morearea; kaua e tukua ki te oneone, ki te wai rānei).
4.2 Te Whakatutuki i ngā Ture
E tutuki ana i ngā Ture REACH (EU) (kua rēhitatia i raro i te rārangi REACH SVHC, kāore he here mō te whakamahinga ahumahi).
E tutuki ana i ngā Paerewa FDA (mō ngā tono pa-kai, hei tauira, hei aukati waikura i roto i ngā taputapu tukatuka kai).
E rite ana ki ngā Paerewa USP/NF (tohu rongoā) mō te whakamahi i roto i te hanga rongoā.
Kua whakamanahia e te ISO 9001 (whakahaere kounga) me te ISO 14001 (whakahaere taiao) mō ngā tukanga whakaputa.
Ngā Kaupapa Matua o te Pepa Raraunga Hangarau (TDS)
| Tawhā | Taumata Ahumahi | Te Tohu Rongoā | Tikanga Whakamātautau |
| Te parakore | ≥99.0% | ≥99.5% | Te Whakamātautau Wai Mahi-Teitei (HPLC) |
| Te Ihirangi Makuku | ≤0.5% | ≤0.3% | Te Whakatakotoranga a Karl Fischer |
| Te Ihirangi o te Pungarehu | ≤0.1% | ≤0.05% | Tātaritanga Ine-ā-papa |
| Rino (Fe) | ≤5 ppm | ≤2 ppm | Te Matawai Ngongo Atomika (AAS) |
| Ngā Mea Kore-Warewa i roto i te Wai | ≤0.01% | ≤0.005% | Tātari me te Whakamaroke |
He aha i whiriwhiri ai i tā mātou Thiourea?
Ngā Tohu Whakaritenga: Ka tukuna e mātou ngā tohu ahumahi, rongoā, me te taiwhanga hei whakatutuki i ngā hiahia motuhake a te kiritaki (hei tauira, he iti te ihirangi konganuku taumaha mō te whakamahinga rongoā).
Pūmau te Tukunga: Mā ā mātou whare whakaputa (me te kaha ā-tau o te 5,000 tāne) ka tukuna i te wā tika, ahakoa mō ngā ota nui (ngā pahu 20-500 kg).
Tautoko Hangarau: Ka whakaratohia e tā mātou tīma matū he ratonga kōrero i mua i te hoko (hei tauira, te taurite tono) me te tautoko i muri i te hoko (hei tauira, te whakatau raruraru mō ngā take tukatuka).
Te Hanganga Hoa-Taiao: Ka whakaitihia e tā mātou tukanga hangahanga ngā wai para me ngā tukunga, kia rite ai ki ngā whāinga oranga tonutanga o te ao.
Whakapā mai
Mō ngā utu, ngā tauira, ngā tuhinga TDS/COA katoa rānei, whakapā atu ki tā mātou tīma hokohoko:
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