Sulfuric acid specific gravity

Stannous Sulfate. Stannous sulfate (tin(Il) sulfate), mol wt 214.75, SnSO, is a white crystalline powder which decomposes above 360°C. Because of internal redox reactions and a residue of acid moisture, the commercial product tends to discolor and degrade at ca 60°C. It is soluble in concentrated sulfuric acid and in water (330 g/L at 25°C). The solubihty in sulfuric acid solutions decreases as the concentration of free sulfuric acid increases. Stannous sulfate can be prepared from the reaction of excess sulfuric acid (specific gravity 1.53) and granulated tin for several days at 100°C until the reaction has ceased. Stannous sulfate is extracted with water and the aqueous solution evaporates in vacuo. Methanol is used to remove excess acid. It is also prepared by reaction of stannous oxide and sulfuric acid and by the direct electrolysis of high grade tin metal in sulfuric acid solutions of moderate strength in cells with anion-exchange membranes (36). 

A.1 Sulfuric Acid Specific Gravity at Constant Temperature... 

Oxides of Nitrogen. To determine their concentration, 0.01 A potassium permanganate and sulfuric acid (specific gravity 1.84 at 15.6° C.) are required. A 0.005A sodium carbonate solution containing 0.1 mole of potassium permanganate (11) is used as an absorbant for oxides of nitrogen. 

Polyester elastomer is soluble in cresol, concentrated sulfuric acid, and trifluo-roacetic acid. Specific gravity ranges from 1.17 to 1.25. The elastomer burns very slowly with a yellow flame with blue tip. It gives off sooty smoke and a sweet characteristic odor. Infrared spectroscopy and DSC are preferred method for positive identification of the elastomer. 

Example Sulfuric acid has the molecular weight 98.08. If the concentrated acid assays 95.5% and has the specific gravity 1.84, the volume required for 1 liter of a 0.1 molar solution is... 

Sulfuric Acid. Sulfuric acid is a dense, colorless Hquid at room temperature, having specific gravity as shown in Figure 3 (50). Historically, the concentration of sulfuric acid has been reported as specific gravity (sp gr) in degrees Baumn. In the United States, the Baumn scale is calculated by the following formula ... 

Descriptions of sulfuric acid analytical procedures not specified by ASTM are available (32,152). Federal specifications also describe the requited method of analysis. Concentrations of 78 wt % and 93 wt % H2SO4 are commonly measured indirectly by determining specific gravity. Higher acid concentrations are normally determined by titration with a base, or by sonic velocity or other physical property for plant control. Sonic velocity has been found to be quite accurate for strength analysis of both filming and nonfuming acid. 

Traditionally, sodium dichromate dihydrate is mixed with 66° Bh (specific gravity = 1.84) sulfuric acid in a heavy-walled cast-iron or steel reactor. The mixture is heated externally, and the reactor is provided with a sweep agitator. Water is driven off and the hydrous bisulfate melts at about 160°C. As the temperature is slowly increased, the molten bisulfate provides an excellent heat-transfer medium for melting the chromic acid at 197°C without appreciable decomposition. As soon as the chromic acid melts, the agitator is stopped and the mixture separates into a heavy layer of molten chromic acid and a light layer of molten bisulfate. The chromic acid is tapped and flaked on water cooled roUs to produce the customary commercial form. The bisulfate contains dissolved CrO and soluble and insoluble chromic sulfates. Environmental considerations dictate purification and return of the bisulfate to the treating operation. 

Assay of hydrogen cyanide can be done by specific gravity or silver nitrate titration. Sulfur dioxide in hydrogen cyanide can be deterrnined by infrared analysis or by reaction of excess standard iodine solution and titration, using standard sodium thiosulfate or by measurement of total acidity by... 

Nickel was first isolated in 1751, and a relatively pure metal was prepared in 1804. In nature, nickel is found primarily as oxide and sulfide ores (USPHS 1977). It has high electrical and thermal conductivities and is resistant to corrosion at environmental temperatures between -20°C and +30°C (Chau and Kulikovsky-Cordeiro 1995). Nickel, also known as carbonyl nickel powder or C.I. No. 77775, has a CAS number of 7440-02-0. Metallic nickel is a hard, lustrous, silvery white metal with a specific gravity of 8.9, a melting point of about 1455°C, and a boiling point at about 2732°C. It is insoluble in water and ammonium hydroxide, soluble in dilute nitric acid or aqua regia, and slightly soluble in hydrochloric and sulfuric acid. Nickel has an atomic weight of 58.71. Nickel is... 

How many milliliters of 90% (w/w) sulfuric acid having a specific gravity of 1.788 should be used in preparing a liter of 8% (w/v) acid ... 

In the following year, however, he concluded that tire mineral contained neither bismuth sulfide nor antimony, that the gold was an essential constituent of it, and that it contained an unknown metal. In an investigation lasting three years and consisting of more than fifty tests, he determined the specific gravity of the mineral and noted the radish odor of the white smoke which passed off when the new metal was heated, the red color which the metal imparts to sulfuric acid, and the black precipitate which this solution gives when diluted with water (3). 

But here is another piece of recent news.. .. It is a new simple body which will find its place between chlorine and iodine. The author of this discovery is M. Ballard of Montpellier. This new body, which he calls muride, is found in sea water. He has extracted it from the mother liquor of Montpellier brines by saturating them with chlorine and distilling. He obtains a dark red liquid substance boiling at 47°. The vapor resembles that of nitrous acid. Its specific gravity is 3. One preserves it under concentrated sulfuric... 

G = specific gravity of sample Aldehydes (as acetaldehyde). Reagents Sodium metabisulfite solution (0.1N). Dissolve 4.75 to 5.00g of sodium metabisulfite in sufficient water to make 1000ml of solution. Adjust die pH of the solution to 3.5 by adding 0.5N sulfuric acid. Make up a fresh solution daily. Do not use this solution after the pH drops below 3-0... 

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