Magnesium acetate monohydrate

B. Phenylglyoxal. The phenylglyoxal hemimercaptal prepared as described in procedure A (69-74 g.) is dissolved in 400 ml. of warm chloroform, and 60 g. (0.30 mole) of powdered cupric acetate monohydrate is added in one portion to the well-stirred solution. The mixture is stirred at room temperature for 1 hour the solids are removed by suction filtration and washed with two 75-ml. portions of chloroform. The combined chloroform filtrate and washings are shaken in a separatory funnel with 75 ml. of water 20 g. of powdered sodium carbonate is added in small portions to the funnel, and the chloroform solution is shaken with the neutralized aqueous solution. (Cautionl Carbon dioxide is evolved.) The aqueous layer is separated and extracted with four 30-ml. portions of chloroform. The chloroform solutions are combined and dried with anhydrous magnesium sulfate, and the chloroform is removed under reduced pressure. The residue is fractionally distilled under reduced pressure to yield 43-49 g. (64-73%, based on ethyl benzoate) of anhydrous phenylglyoxal as a yellow liquid, b.p. 63-65° (0.5 mm.). 

Figure 1. Second-derivative ESR spectra of polycrystalline (A) potassium acetate, (B) calcium acetate monohydrate, and (C) magnesium acetate tetrahydrate irradiated and observed at 77°K. with 15db attenuation...

Lead styphnate monohydrate is precipitated as the basic salt from a mixture of solutions of magnesium styphnate and lead acetate followed by conversion to the normal form by acidification using dilute nitric acid (97—99). 

Femtrace Estrodiol acetate 0.45, 0.9, 1.8 mg Tablet Vasomotor symptom from menopause Estrogen receptor Povidone, lactose monohydrate, MCC, croscarmellose Na, silicon dioxide, magnesium stearate Warner Chilcott... 

Citric acid Citric acid monohydrate Ethylenediamine Glycine Hydrochloric acid Magnesium carbonate Magnesium oxide Potassium carbonate Potassium citrate Potassium metaphosphate Potassium phosphate Potassium phosphate dibasic Sodium acetate anhydrous Sodium citrate Sodium hydroxide Sodium lactate Sodium phosphate Sodium phosphate dibasic anhydrous Sodium phosphate dibasic heptahydrate Sodium tri metaphosphate... 

Preparation of barium styphnate monohydrate for practical applications is similar to preparation of LS. Magnesium styphnate is used as a starting material which reacts with barium nitrate, chloride, or acetate resulting in precipitation of barium styphnate. A reaction temperature of 60-85 °C is recommended. Product precipitates in form of the trihydrate, which dehydrates to the monohydrate by the slow addition of sufficiently dilute lutric acid [75]. It is difficult to re-crystallize in a suitable form and it is therefore recommended to use a crystal-modifying agent (e.g., carboxymethyl cellulose) [2, 26, 27]. 

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