calcium sulfate

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Synonyms for calcium sulfate

a white salt (CaSO4)

References in periodicals archive ?
Post-berseem higher SAR values might be due to highest salt accumulation which enhanced CaCO3 and CaSO4 precipitation leading to high Na+ concentration and thus SAR.
En el caso Caso4 se realizan algunos eventos de capacitacion (entre ellos de la tematica TIC).
Sodium alginate solution (2%) was prepared with distilled water, sodium tripolyphosphate (Na TPP) and CaSO4 1.
A12O3 3H2SO4 A12(SO4)3 + 3H2O (1) Fe2O3 + 3H2SO4 Fe2(SO4)3 + 3H2O (2) CaCO3 + H2SO4 CaSO4 + H2O + CO2 (3) TiO2+H2SO4 TiOSO4 + H2O (4)
However, to maintain the total hardness, the salts of CaSO4 and MgSO4 (to increase hardness) while ethylenediaminetetraacetic acid (EDTA) and its sodium salt were used to decrease the water hardness.
Previous studies suggest that as the salt concentration in soil solution increases Ca2+ precipitates as CaCO3 and, to a lesser extent as CaSO4, leaving preponderance of Na+ in soil solution that subsequently induces Na+ adsorption on the cation exchange sites (Suarez, 1981) and increases soil pH.
Careful observation of correlation coefficients among the ionic components suggests that NaCl, CaSO4, MgSO4, MgCl2, HNO3, NH4NO3, NH4SO4 and (NH4)2SO4 are predominant species combinations.
In order to maintain the total hardness of water, salts of MgSO4 and CaSO4 were added to increase the hardness while EDTA was used to decrease the water hardness.
Ettringite is stable in the presence of excess CaSO4 and solid Ca(OH)2 at pH = 10.
2H2O Mica: XY2-3 Z4O10 (OH, F) 2: X= K, Na, Ba, Ca, CS (H3O), NH4 Y= Al, Mg, Fe+2, Li, Cr, Mn, V, Zn Z= Si, Al, Fe+3, Be,Ti Quartz: SiO2 PLASTER OF PARIS (Gypsum cement): CaSO4.
Faiz and Gautam [27] have reported that poor vehicle maintenance, misuse of lubricant, and adulter- ation of gasoline and diesel fuels is a persistent problem in vehicles that are in use in south Asia and may have possibly exacerbated emission levels Careful observation among the ionic components (Table-2) suggests that NaCl, CaSO4, MgSO4, MgCl2, HNO3, NH4NO3, NH4SO4 and (NH4)2SO4 are predominant species combinations.
However, to maintain the total hardness, the salts of CaSO4 and MgSO4 (to increase hardness), while ethylenediaminetetraacetic acid and its sodium salts (EDTA) were used to decrease water hardness.