Calcium sulfate hemihydrate CAS 10034-76-1
Calcium sulfate imatchedwanso gypsum yaiwisi, gypsum yolimba yaiwisi, Muriacite, gypsum ya anhydrous. Makristalo opanda mtundu wa orthorhombic (mtundu wa β) kapena makristasi a monoclinic (mtundu wa α). Kulemera kwa molekyulu 136.14. Kuchulukana kwa 2.960. Malo osungunuka 1193℃ (osinthidwa kuchokera ku mtundu wa β kukhala mtundu wa α), 1450℃ (mtundu wa α, ndikuwola). Amasungunuka pang'ono m'madzi (0.209 pa 20℃), amasungunuka mu asidi, mchere wa ammonium, sodium thiosulfate, sodium chloride solution ndi glycerol. Ngakhale madzi atawonjezeredwa, sangakhalenso calcium sulfate dihydrate. Ngati miyala yachilengedwe ya gypsum yatha madzi pansi pa 300℃, gypsum ya anhydrous yosungunuka m'madzi imatha kupangidwa; ngati gypsum yachilengedwe yatenthedwa kufika pa 600℃, gypsum ya anhydrous yosasungunuka imapangidwa. Pamene calcium sulfate kapena pulasitala ya Paris yosakanikirana ndi madzi okwanira, imauma pang'onopang'ono. Imagwiritsidwa ntchito ngati choletsa, chomatira, choyamwa chinyezi, ufa wopukuta, chodzaza mapepala, choyeretsera mpweya, bandeji ya pulasitala, ndi chopangidwa ndi manja. Gypsum imagwiritsidwa ntchito ngati zinthu zopangira simenti, ndipo imatha kusintha nthawi yoyika simenti. Imagwiritsidwa ntchito ngati cholumikizira popanga tofu, chakudya cha yisiti, chowongolera mtanda, komanso chothandizira chelating. Pali migodi yachilengedwe ya gypsum, ndipo zinthu zina zomwe zimapangidwa ndi makampani opanga phosphate zimakhala ndi calcium sulfate. Yankho la ammonium sulfate limakhudzana ndi yankho la calcium chloride, ndipo kusefa, kutsuka ndi kunyowetsa madzi kumatha kupanga chinthu choyera.
| Chinthu | Zotsatira |
| Maonekedwe | Ufa woyera |
| Kuyesa | ≥99% |
| Kumveka bwino | Kutsatira malamulo |
| HCl yosasungunuka | ≤0.025% |
| Chloride | ≤0.002% |
| Nitrate | ≤0.002% |
| Mchere wa Ammonium | ≤0.005% |
| Kaboneti | ≤0.05% |
| Chitsulo | ≤0.0005% |
| Chitsulo cholemera | ≤0.001% |
| Magnesium ndi zitsulo za alkali | ≤0.2% |
Kukonza chakudya:
Calcium sulfate ingagwiritsidwe ntchito ngati mankhwala ochizira ufa (monga mankhwala ochepetsa mphamvu ya benzoyl peroxide), ndipo imagwiritsidwa ntchito pamlingo wapamwamba wa magalamu 1.5 pa kilogalamu; imagwiritsidwa ntchito ngati chosakaniza pokonza chakudya. Imagwiritsidwa ntchito popanga tofu, ndipo pafupifupi magalamu 14-20 pa lita imodzi ya soya amawonjezeredwa ku mkaka wa soya (kuchuluka kwambiri kumabweretsa kuwawa). Imawonjezeredwa ku ufa wa tirigu pa 0.15% ndipo imagwiritsidwa ntchito ngati yisiti yowongolera chakudya ndi mtanda. Imawonjezeredwa ku tomato ndi mbatata zam'chitini ngati cholimbitsa minofu. Imagwiritsidwa ntchito ngati cholimbitsa madzi komanso chowonjezera kukoma popanga mowa. Ingagwiritsidwenso ntchito ngati chowonjezera pazakudya.
Kupanga mafakitale:
1. Makampani Omanga: Calcium sulfate ingagwiritsidwe ntchito mumakampani omanga pa zipangizo zomangira, zipangizo zotetezera kutentha, zokutira, zipangizo zolimbitsa, ndi zina zotero. Ndevu za calcium sulfate zimakhala ndi kukangana bwino, kusunga kutentha, kuteteza kutentha, kupewa moto, kuteteza kutentha kosagwiritsa ntchito kondakitala ndi zina, ndipo zimatha kusintha asbestos ngati zinthu zotsutsana, zinthu zotetezera kutentha, ndi zinthu zosagwira moto (zoletsa moto). Imagwiritsidwa ntchito ngati chothandizira mphamvu yoyambirira mu zosakaniza za konkriti, nthawi zambiri ndi mlingo wa pafupifupi 3%, kusintha nthawi yokhazikitsira ndikusakaniza ndi simenti. Calcium sulfate ikawonjezedwa ku konkriti, imakhala ndi mphamvu yoyambirira.
2. Makampani Opanga Mapepala: Calcium sulfate imagwiritsidwa ntchito m'makampani opanga mapepala kuti ilowe m'malo mwa gawo lina kapena zambiri za zamkati. Calcium sulfate yokhala ndi chiŵerengero chochepera kapena chofanana ndi 50 ingagwiritsidwe ntchito ngati chodzaza mapepala chapamwamba, chomwe chingawonjezere kwambiri kupanga mapepala, kuchepetsa kugwiritsa ntchito matabwa, komanso kuthandiza kuteteza chilengedwe ndikuchepetsa kuipitsa madzi otayira.
3. Makampani Opanga Mankhwala: Mu makampani opanga mankhwala, ingagwiritsidwe ntchito ngati chinthu cholimbitsa. Ndevu za calcium sulfate zomwe sizimaphikidwa ndi madzi zingagwiritsidwe ntchito mu pulasitiki kuti ziwonjezere mphamvu ya tinthu ta pulasitiki, kukana kutentha kwambiri, komanso kuchepetsa ndalama. Pakupanga mapulasitiki monga polyvinyl chloride, polyethylene, propylene, ndi polystyrene, imatha kupititsa patsogolo magwiridwe antchito osiyanasiyana a chinthucho, kukonza kusalala, kukhazikika kwa mawonekedwe, kutha kwa pamwamba, mphamvu yokoka, mphamvu yokoka, kupindika modulus yosalala ndi kutentha kwa kutentha, ndikuchepetsa kuwonongeka kwa zida. Monga chodzaza phula, imatha kukulitsa kwambiri malo ofewa a phula.
Ulimi:
Calcium sulfate ingagwiritsidwe ntchito ngati feteleza mu ulimi kuti ichepetse kuchuluka kwa alkali m'nthaka ndikuwonjezera magwiridwe antchito a nthaka.
Mankhwala:
Calcium sulfate imagwira ntchito zosiyanasiyana mumakampani opanga mankhwala. Ingagwiritsidwe ntchito pokonza mankhwala ndikupereka zosakaniza ndi zinthu zofunika pa mankhwala. Kuphatikiza apo, calcium sulfate imagwiritsidwanso ntchito popanga mapiritsi kuti atsimikizire kuti mapiritsiwo ndi olimba komanso ogwira ntchito. Nthawi yomweyo, imawonjezedwanso ku mankhwala otsukira mano kuti iwonjezere kapangidwe ndi ntchito ya mankhwala otsukira mano. Kugwiritsa ntchito kumeneku kukuwonetsa kufunika kwa calcium sulfate mumakampani opanga mankhwala, kupereka zosakaniza ndi zinthu zofunika kwambiri pa mankhwala.
25kg/thumba
Calcium sulfate hemihydrate CAS 10034-76-1
Calcium sulfate hemihydrate CAS 10034-76-1
