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Aluminium sulfate is rarely, if ever, encountered as the anhydrous salt. It forms a number of different hydrates, of which the hexadecahydrate Al 2 (SO 4) 3 ·16H 2 O and octadecahydrate Al 2 (SO 4) 3 ·18H 2 O are the most common. The heptadecahydrate, whose formula can be written as [Al(H 2 O) 6] 2 (SO 4) 3 ·5H 2 O, occurs naturally as the ...
Other related compounds, sometimes called sodium aluminate, prepared by reaction of Na 2 O and Al 2 O 3 are Na 5 AlO 4 which contains discrete AlO 4 5− anions, Na 7 Al 3 O 8 and Na 17 Al 5 O 16 which contain complex polymeric anions, and NaAl 11 O 17, once mistakenly believed to be β-alumina, a phase of aluminium oxide.
Sodium aluminium sulfate is the inorganic compound with the chemical formula NaAl(SO 4) 2 ·12H 2 O (sometimes written Na 2 SO 4 ·Al 2 (SO 4) 3 ·24H 2 O). Also known as soda alum, sodium alum, or SAS, this white solid is used in the manufacture of baking powder and as a food additive. Its official mineral name is alum-Na (IMA symbol: Aum-Na [3]).
2 Al + 2 NaOH + 2 H 2 O → 2 NaAlO 2 + 3 H 2 Sodium aluminate is an inorganic chemical that is used as an effective source of aluminium hydroxide for many industrial and technical applications. Pure sodium aluminate (anhydrous) is a white crystalline solid having a formula variously given as NaAlO 2 , Na 3 AlO 3 , Na[Al(OH) 4 ] , Na 2 O·Al 2 ...
2 ·12H 2 O. An alum (/ ˈ æ l ə m /) is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula X Al(SO 4) 2 ·12 H 2 O, such that X is a monovalent cation such as potassium or ammonium. [1] By itself, "alum" often refers to potassium alum, with the formula KAl(SO 4) 2 ·12 H 2 O.
Al(OH) 3 + NaOH → NaAl(OH) 4. Except for SiO 2, the other components of bauxite do not dissolve in base. Upon filtering the basic mixture, Fe 2 O 3 is removed. When the Bayer liquor is cooled, Al(OH) 3 precipitates, leaving the silicates in solution. NaAl(OH) 4 → NaOH + Al(OH) 3. The solid Al(OH) 3 Gibbsite is then calcined (heated to over ...
2 NaOH(aq) + H 2 SO 4 (aq) → Na 2 SO 4 (aq) + 2 H 2 O(l) ΔH = -112.5 kJ (highly exothermic) In the laboratory it can also be synthesized from the reaction between sodium bicarbonate and magnesium sulfate, by precipitating magnesium carbonate. 2 NaHCO 3 + MgSO 4 → Na 2 SO 4 + MgCO 3 + CO 2 + H 2 O
C 13 H 8 N 3 NaO 5 (Na salt) C 13 H 9 N 3 O 5 (acid) Molar mass: 309.21 g mol −1 (Na salt) 287.23 g mol −1 (acid) HazardsSigma-Aldrich Co., ALIZARINE YELLOW R. Retrieved on 09 April 2023. GHS labelling: