Barium chloride dihydrate

A solution of 257 g. (1.05 moles) of barium chloride dihydrate in about 500 cc. of hot water is added to the reaction mixture, with vigorous shaking, and the mixture is heated on a steam bath for one-half hour. A heavy precipitate of the barium salt of the amino acid separates at once. After cooling to room temperature, the barium salt is collected on a suction filter, transferred to a beaker, and washed with two 250-cc. portions of hot water (8o°). After drying at ioo°, the barium salt weighs 225-230 g. (80-82 per cent of the theoretical amount). 

C03-0015. Determine the chemical formulas of barium chloride dihydrate, chromium(III) hydroxide, and sulfur trioxide. 

Any sulfate ions resulting from oxidation of sulfite should be removed otherwise they will be converted to sulfuric acid in the subsequent procedure and destroy sultone. Ordinarily, 12-13 g. of barium chloride dihydrate is required. The end point of the addition is conveniently determined with tetrahydroquinone indicator used in spot tests on filter paper [cf. Ind. Eng. Chem., Anal. Ed., 9, 331 (1937)]. 

A mixture of 132.5 g. (1.05 moles) of sodium sulfite, 99.5 g. (0.5 mole) of bis-4-chlorobutyl ether (Note 1), and 450 ml. of water is placed in a creased 1-1. three-necked flask fitted with an efficient sealed stirrer and a reflux condenser. The third neck of the flask is closed with a stopper, and the mixture is heated and stirred vigorously under reflux until the ether has dissolved (Note 2). At the end of this time, heating is discontinued, and 60 ml. of concentrated c.p. hydrochloric acid is cautiously added to the solution. The mixture is then boiled with stirring until sulfur dioxide is no longer evolved. Solid barium chloride dihydrate (or a 10% aqueous solution of this salt) is added to the hot solution (Note 3) until all sulfate has been precipitated then the barium sulfate is removed by suction filtration through a layer of filter aid. 

Barium chlorate monohydrate, 6 116 Barium chloride, 3 362 acute lethal dose, 3 372t Barium chloride dihydrate, 3 362 Barium chromate(V), physical properties, 6 528t... 

If a technician wishes to prepare a solution containing 55.3 mg of barium, how many grams of barium chloride dihydrate does he or she need to weigh ... 

Dietz DD, Elwell MR, Davis WE Jr, et al Subchronic toxicity of barium chloride dihydrate administered to rats and mice in the drinking water. Fundam Appl Toxicol 19 527-537, 1992... 

Preparation of Potassium Trioxalatoferrate(III). First prepare barium oxalate. To do this, add a solution of 2.5 g of barium chloride dihydrate in 6 ml of water to a solution of 1.5 g of sodium oxalate in 40 ml of water. Filter off the formed crystals on a Buchner funnel and wash them several times with cold water. 

Barium chloride dihydrate N-(4-Aminobenzoyl)-L-glutamic acid 2,4,5,6-Tetraaminopyrimidine sulfate hydrate... 

Barium chloride (0-25m). Dissolve 61-1 g barium chloride dihydrate, BaCl2.2H20, in water and dilute to 1 litre. 

Summary Barium styphnate is easily prepared by reacting styphnic acid with ammonia solution forming ammonium styphnate. This ammonium styphnate is then converted into the water insoluble barium styphnate by addition of barium chloride dihydrate. The product is then filtered-off, washed, and then dried. Commercial Industrial note For related, or similar information, see Serial No. 360,756, July 28th, 1970, by Atlas Chemical Industries, to Harold F. Bluhm, Tamaqua PA. Part or parts of this laboratory process may be protected by international, and/or commercial/industrial processes. Before using this process to legally manufacture the mentioned explosive, with intent to sell, consult any protected commercial or industrial processes related to, similar to, or additional to, the process discussed in this procedure. This process may be used to legally prepare the mentioned explosive for laboratory, educational, or research purposes. 

Procedure Add and dissolve 20 milliliters of 28 to 30% ammonium solution into 400 milliliters of water. Thereafter, add 20 grams of styphnic acid, and stir the mixture vigorously for about 20 minutes (at the end of 20 minutes, a clear solution will result). Then, heat the mixture to 80 Celsius. While the mixture begins to heat-up to 80 Celsius, prepare a solution by adding and dissolving 20 grams of barium chloride dihydrate into 150 milliliters of water. When the styphnic acid mixture reaches about 80 Celsius, add the barium chloride dihydrate solution over a period of about 4 minutes while constantly stirring the styphnic acid mixture. Note a yellow precipitate will form immediately after the first addition of the barium chloride dihydrate. After the addition of the barium chloride dihydrate solution, remove the heat source and allow the reaction mixture to cool to room temperature. Then place the reaction mixture into a cold-water bath for 30 minutes. Afterwards, filter-off the precipitated product, wash with 200 milliliters of water, 100 milliliters of acetone, and then vacuum dry or air-dry the product. The result will be a yellow solid with very uniform particle size. 

AIP04 aluminum phosphate 7784-30-7 23.00 2.4981 1 456 BaCI2H402 barium chloride dihydrate 10326-27-9 25.00 3 0970 1... 

Preparation of Hydroxylamine Chloride. Dissolve 7 g of sodium hydroxide in 30 ml of water and saturate the solution with sulphur dioxide to an acid reaction, after which pass the stream of gas through the solution for another five minutes (in a fume cupboard ). Add the solution dropwise with continuous stirring to a solution containing 5.5 g of sodium nitrite in 9 ml of water cooled by a mixture of ice and salt. See that the temperature does not rise above 0 °C. Pour the solution into a round-bottomed flask, dilute it to a volume of 150 ml, and heat it to boiling on an electrical flask heater. Perform complete precipitation of the sulphate ions with a solution of barium chloride prepared by dissolving 37 g of barium chloride dihydrate in 45 ml of water. 

One such experiment that was changed involved the determination of a formula of a hydrate salt (27). The original experiment utilized toxic barium chloride dihydrate, Bunsen burners, and disposal of the dehydrated salt at the... 

Both anhydrous barium chloride [10361-37-2], BaQ2, mol wt 208.25, density 3.856 g/mL, and barium chloride dihydrate [10326-27-9], BaQ2 21 f 0, mol wt 244.28, density 3.097 g/mL, are produced from a filtered aqueous solution formed by the reaction of hydrochloric acid and BaC03 or BaS. If BaS is used, the H2S generated must be appropriately handled The solubility of BaQ2 in water is... 

Barium chloride dihydrate BaCl3-2H30 10326-27-9 244.264 wh monoci cry -120 dec 3.097 37.0 I FtOH... 

Ammonium chloride NH Cl -36.7 Barium chloride dihydrate BaCl3.2HjO -100... 

---