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The salt is typically prepared by reduction of gold(III) chloride with thiosulfate: [3] 4 Na 2 S 2 O 3 + AuCl 3 → Na 3 [Au(S 2 O 3) 2] + Na 2 S 4 O 6 + 3 NaCl. The compound was first synthesized in 1845 by Mathurin-Joseph Fordos and A. Gélis who were researching chemicals used in the Daguerrotype photographic process.
Guía Roji (Roji's Guides) is a cartography company based in Mexico City. Guía Roji was created in 1928 by Joaquín Palacios Roji Lara. Since that year, the characteristic cover color of the map books has been red. The first maps showed the reduced size of Mexico City in the 1920s. In the late 1960s, the number of maps began to increase ...
The most common side effects include vomiting, nausea (feeling sick), hypernatremia (high blood levels of sodium), hypophosphatemia (low blood levels of phosphate) and hypokalemia (low blood levels of potassium). [2] Sodium thiosulfate (Pedmarqsi) was approved for medical use in the European Union in May 2023. [2]
Glucono-δ-lactone (GDL), also known as gluconolactone, is an organic compound with the formula (HOCH) 3 (HOCH 2 CH)CO 2. A colorless solid, it is an oxidized derivative of glucose . It is typically produced by the aerobic oxidation of glucose in the presence of the enzyme glucose oxidase .
Faujasite (FAU-type zeolite) is a mineral group in the zeolite family of silicate minerals.The group consists of faujasite-Na, faujasite-Mg and faujasite-Ca. They all share the same basic formula (Na 2,Ca,Mg) 3.5 [Al 7 Si 17 O 48]·32(H 2 O) by varying the amounts of sodium, magnesium and calcium. [1]
Magnesium nitrate reacts with alkali metal hydroxide to form the corresponding nitrate: Mg(NO 3) 2 + 2 NaOH → Mg(OH) 2 + 2 NaNO 3.. Since magnesium nitrate has a high affinity for water, heating the hexahydrate does not result in the dehydration of the salt, but rather its decomposition into magnesium oxide, oxygen, and nitrogen oxides:
Dissolution of MoO 3 in sodium hydroxide at 50–70 °C followed by crystallizing the filtered product. [3] If crystallized below 10 °C, the decahydrate forms. Above 10 °C, the dihydate crystallizes. The anhydrous salt is obtained by heating this product at 100 °C. MoO 3 + 2NaOH + H 2 O → Na 2 MoO 4 ·2H 2 O
H[AuCl 4] + NaCl → Na[AuCl 4] + HCl 2 H[AuCl 4] + Na 2 CO 3 → 2 Na[AuCl 4] + H 2 O + CO 2. However, more efficient preparation methods have been discovered recently. These are the addition of gold with sodium oxy-halogen salts and hydrochloric acid. [6]