Sodium sulphite anhydrous

This has the following composition Metol, 2 g sodium sulphite (anhydrous) 75 g hydroquinone, 8 g sodium carbonate (anhydrous), 37.5 g potassium bromide, 2 g water to make 1 L. Dissolve chemicals in order given. 

Sodium salicylate, C6H4(OH)COONa Sodium succinate, (CH2C00Na)2.6H20 Sodium sulphate (anhydrous), Na2S04 Sodium sulphite (anhydrous), Na2S03... 

BP Sodium sulphite anhydrous JP Dried sodium sulfite PhEur Nattii sulfis anhydricus USPNF Sodium sulfite anhydrous... 

Required Aniline, 20 ml. hydrochloric acid, 50 ml, sodium nitrite, 17 g. sodium carbonate (anhydrous) 17 g. sodium sulphite (7H2O), 115 g... 

Required Anhydrous sodium carbonate, 5 g. potassium permanganate, 10 g. benzyl chloride, 5 ml. sodium sulphite, ca. 20 g. 

Di-teo-propyl ether. The commercial product usually contains appreciable quantities of peroxides these should be removed by treatment with an acidified solution of a ferrous salt or with a solution of sodium sulphite (see under Diethyl ether). The ether is then dried with anhydrous calcium chloride and distilled. Pure di-iao-propyl ether has b.p. 68-5°/760 mm. 

Dissolve 47 g. (0-5 mole) of aniline in a mixture of concentrated hydrochloric acid and water (100 c.c. of each) and diazotise the well-cooled solution, in the manner repeatedly described, with a solution of 38 g. of sodium nitrite in 100 c.c. of water. Before diazotising the aniline, prepare as concentrated a solution as possible in water of 158 g. (1-25 mole) of neutral anhydrous sodium sulphite or of 315 g. of the hydrated (7 H20) salt. The sulphite content of this solution is equivalent to the amount of hydrochloric acid taken, and represents a 25 per cent excess in respect of the aniline. 

Methylaminophenol-sulphite Solution Dissolve 0.1 g of 4-methylaminophenol sulphate, 20 g sodium metabisulphite and 0.5 g anhydrous sodium sulphite in sufficient DW to produce 100 ml. 

Sodium sulphite (0-5m). Dissolve 6-3 g anhydrous sodium sulphite, Na2S03, or 12-6 g sodium sulphite heptahydrate, Na2S03.7H20, in water and dilute to 100 ml. 

Sodium sulphite, Na2S03.—The anhydrous sulphite can be prepared by heating equimolecular proportions of sodium hydrogen sulphite and sodium hydrogen carbonate 9... 

Colorimetric Assay for Sulphite in Urine Urine is die preferred sample but die method may also be used for stomach washings. Standard Sulphite Solutions. Dissolve 1.5746g of anhydrous sodium sulphite in sufficient water to produce 1000 ml. This solution contains 1 mg of SOj in 1 ml. Serially dilute this solution with water to produce solutions containing 0.5, 1.5, 3.0, 6.0, and 10.0 Lig of SO in 1 ml. 

SYNS DISODIUM SULFITE EXSICATED SODIUM SULHTE NATRIUMSULFID (GERMAN) SODIUM SULFITE, anhydrous SODIUM SULPHITE SULFTECH SULFUROUS ACID, SODIUM SALT (1 2)... 

Synonyms Anhydrous sodium sulfite Disodium sulfite Exsiccated sodium sulfite Sulftech Natriumsulfit (German) Sodium sulfite anhydrous Sodium sulphite Sulfurous acid Disodium salt Sodium salt (1 2)... 

To the filtrate thus obtained add about 0.1 g of sodium hydrosulphite (or sodium sulphite) and 7.5 g of anhydrous sodium acetate in about 13.5 g acetic anhydride at 40°C. 

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