Calcium sulfate dihydrate CAS 10101-41-4
Calcium sulfate dihydrate tseem hu ua "natural anhydrous gypsum". Cov tshuaj formula CaSO4. Molecular hnyav 136.14. Orthorhombic siv lead ua. kwv tij density 2.960, refractive index 1.569, 1.575, 1.613. Lwm soluble anhydrous gypsum: melting point 1450 ℃, txheeb ze ntom 2.89, refractive index 1.505, 1.548, decomposes thaum dawb kub. Nws cov hemihydrate feem ntau hu ua "burned gypsum" thiab "platinum calciformis", feem ntau nyob rau hauv daim ntawv ntawm cov hmoov dawb tsis-crystalline, nrog ib tug txheeb ze ntom ntawm 2.75. Nws cov dihydrate feem ntau hu ua "gypsum", uas yog dawb siv lead ua los yog hmoov, nrog ib tug txheeb ze ntom ntawm 2.32, refractive index 1.521, 1.523, 1.530, thiab poob tag nrho cov dej siv lead ua thaum rhuab mus rau 163 ℃. Cov ntaub ntawv tshuaj me ntsis soluble hauv dej, hydrochloric acid, nitric acid, soluble hauv kub sulfuric acid, insoluble hauv cawv. Cov khoom ntuj yog soluble hauv alkaline sulfate, sodium thiosulfate, thiab ammonium ntsev aqueous daws. Txoj kev npaj: Ntuj anhydrous gypsum yog tau los ntawm reacting CaO thiab SO3 nyob rau hauv liab kub. Soluble anhydrous gypsum yog tau los ntawm cua sov CaSO4 · 2H2O mus tas li qhov hnyav ntawm 200 ℃. Hemihydrate yog tau los ntawm calcining thiab dehydrating raw gypsum. Dihydrate yog tau los ntawm reacting calcium chloride nrog ammonium sulfate. Kev siv tseem ceeb ntawm calcium sulfate: Ntuj anhydrous gypsum feem ntau yog siv hauv tshuaj; soluble anhydrous gypsum tuaj yeem siv los ua kev kho kom zoo nkauj sab hauv, thiab tseem tuaj yeem siv los ua tshuaj, dej haus, thiab lwm yam.; hemihydrate feem ntau yog siv rau hauv cov khoom siv hauv tsev, thiab tuaj yeem siv los ua cov duab gypsum thiab cov ntaub ntawv ceramic; nws cov dihydrate yog siv los ua hemihydrate, fillers, thiab lwm yam.
| Yam khoom | Kev tshwm sim |
| Qhov tshwm sim | Dawb hmoov |
| Assay | ≥99% |
| Qhov tseeb | ua raws |
| HCl insoluble | ≤ 0.025% |
| Chloride | ≤0.002% |
| Nitrate | ≤0.002% |
| Ammonium ntsev | ≤ 0.005% |
| Carbonate | ≤ 0.05% |
| Hlau | ≤ 0.0005% |
| Hnyav hlau | ≤ 0.001% |
| Magnesium thiab alkali hlau | ≤ 0.2% |
Kev Siv Hluav Taws Xob
1. Scale inhibitor: Calcium sulfate dihydrate muaj qhov ua tau zoo ntawm kev ua haujlwm zoo thiab tuaj yeem siv rau kev kho dej hauv cov tshuab ua haujlwm kom tsis txhob scaling hauv cov kav dej thiab cov khoom siv thiab tswj kev ua haujlwm ntawm lub cev.
2. Cov khoom siv raw: Calcium sulfate dihydrate tuaj yeem siv los ua cov khoom siv raw rau kev npaj lwm yam tshuaj, xws li gypsum, gypsum board, gypsum hmoov, thiab lwm yam.
3. Cov ntaub ntawv hauv tsev: Hauv kev tsim kho kev lag luam, calcium sulfate dihydrate tuaj yeem siv los ua cov khoom siv gypsum hauv cov khoom siv hauv tsev rau kev kho kom zoo nkauj thiab kho cov phab ntsa, qab nthab, thiab lwm yam.
4. Mining ua tus neeg saib xyuas: Hauv kev ua cov mining, calcium sulfate dihydrate tuaj yeem siv los ua tus neeg sawv cev pabcuam hauv cov txheej txheem flotation thiab purification los txhawb kev sib cais thiab purification ntawm ores.
Kev Siv Agricultural
1. Cov av txias: Calcium sulfate dihydrate tuaj yeem kho pH ntawm cov av, txhim kho cov qauv hauv av, ua kom cov av fertility, thiab txhawb cov nroj tsuag kev loj hlob.
2. Pub additive: Raws li cov khoom siv calcium, calcium sulfate dihydrate tuaj yeem ntxiv cov calcium hauv cov tsiaj thiab txhawb cov tsiaj loj hlob thiab kev loj hlob ntawm cov pob txha.
3. Cov khoom siv tshuaj tua kab: Hauv kev ua liaj ua teb, calcium sulfate dihydrate tuaj yeem siv los ua cov khoom siv raw rau tshuaj tua kab, kev npaj tshuaj tua kab, tshuaj tua kab, thiab lwm yam.
Kev siv tshuaj kho mob
1. Pharmaceutical raw khoom: Calcium sulfate dihydrate tuaj yeem siv los ua cov khoom siv tshuaj rau kev npaj cov tshuaj calcium, antacids thiab lwm yam tshuaj los kho pob txha, hyperacidity thiab lwm yam kab mob.
2. Cov ntaub ntawv kho mob: Nws feem ntau yog siv los ua cov ntaub qhwv plaster rau kev txhim kho pob txha. Nws muaj cov yas zoo thiab ruaj khov thiab pab kho cov pob txha.
3. Cov ntaub ntawv kho hniav: Hauv kev kho hniav, calcium sulfate dihydrate tuaj yeem siv los ua cov pwm kho hniav thiab cov ntaub ntawv sau.
4. Kev hnav khaub ncaws: Nws muaj qee qhov nqus dej thiab huab cua permeability thiab tuaj yeem siv rau kev hnav khaub ncaws ntawm qee qhov txhab.
Kev siv zaub mov
1. Khoom noj khoom haus additives: Calcium sulfate dihydrate tuaj yeem kho cov pH ntawm cov zaub mov, ua kom tawv nqaij thiab saj ntawm cov zaub mov, thiab ua lub luag haujlwm ua coagulant hauv kev tsim cov khoom noj xws li taum paj.
2. Preservatives: Nws yog siv rau preservative kev kho mob ntawm cov zaub mov, dej haus, thiab lwm yam kom ntev lub neej txee ntawm zaub mov.
25kg / hnab
Calcium sulfate dihydrate CAS 10101-41-4
Calcium sulfate dihydrate CAS 10101-41-4
