What is the viscosity of sodium hydroxide?
What is the viscosity of sodium hydroxide?
around 78cp
Sodium hydroxide has a characteristic viscosity that adds to its storage difficulties and chemical hazards. At 68°F (20°C), a 50% NaOH solution will have a viscosity rating around 78cp (centipoise; 1cp = 1mPas). For reference, water is around 1.0cp at this temperature and olive oil around 85cp.
How is sodium hydroxide used in oil refining?
In the petroleum refining industry, caustic solutions (i.e., NaOH) are regularly used to remove H2S and organic sulfur compounds from hydrocarbon streams. Once H2S is reacted with NaOH, the solution becomes known as spent caustic or spent sulfidic caustic.
How does sodium hydroxide dissolve grease?
When most pipes are clogged it is with a combination of fats and grease. Cleaners that contain sodium hydroxide (either as a solid or already dissolved in water) convert the fats to soap, which dissolves in water. In addition, when sodium hydroxide dissolves in water a great deal of heat is given off.
What does NaOH do to a solution?
Neutralization. A base like sodium hydroxide can react with an acid to neutralize it. In this type of reaction, the hydroxide ion will accept a proton from the acid to form a molecule of water (H2O). Adding sodium hydroxide to a solution of an acid can neutralize some of the acid in the water.
What is the viscosity of sodium?
0.072 centipoise
The critical absolute viscosity of sodium is 0.072 centipoise and that of potassium 0.055 centipoise, the estimated precision being plus or minus 0.01 centipoise. The critical absolute viscosities of metals are higher than those of covalent or homopolar substances of van der Waals type.
Which is the main alkali used for neutralization of oil?
caustic soda
Alkaline neutralisation involves the reaction of free fatty acids with an alkaline solution. In the edible oil industry almost only caustic soda is used for this reaction, but potassium hydroxide is also used by a few producers.
What is the major use of sodium hydroxide?
Sodium hydroxide is used to produce soaps, rayon, paper, products that explode, dyes, and petroleum products. It can also be used in tasks such as processing cotton fabric, metal cleaning and processing, oxide coating, electroplating, and electrolytic extraction. It is often found in commercial drain and oven cleaners.
Is sodium hydroxide a liquid?
At room temperature, sodium hydroxide is a white, odorless solid. Liquid sodium hydroxide is colorless and has no odor. It can react violently with strong acids and with water. Sodium hydroxide is usually sold in pure form as white pellets or as a solution in water.
Is sodium hydroxide a strong base?
Because sodium hydroxide is a strong base that dissociates completely in solution to form hydroxide ions, if the concentration of hydroxide ions in solution is . 10 molar, so is the initial concentration of sodium hydroxide.
What is liquid sodium hydroxide?
Sodium hydroxide is sometimes called caustic soda or lye. It is a common ingrediet in cleaners and soaps. At room temperature, sodium hydroxide is a white, odorless solid. Liquid sodium hydroxide is colorless and has no odor. It can react violently with strong acids and with water.
Is sodium hydroxide a salt or a base?
Sodium hydroxide (caustic soda) is highly soluble in water, and sodium hydroxide solutions are strong bases.
What are the dangers of sodium hydroxide?
Sodium hydroxide is strongly irritating and corrosive.
What is the toxicity of sodium hydroxide?
Toxicity. Sodium hydroxide is corrosive to all tissues. Concentrated vapors lead to serious damage to the eyes and respiratory system. Oral ingestion of sodium hydroxide, which occurs frequently in children, causes severe tissue necrosis, with stricture formation of the esophagus, often resulting in death.
What does sodium hydroxide do to the pH?
As sodium hydroxide concentration increases, the hydrogen ion concentration decreases, and the pH of the solution increases . Drain cleaners and oven cleaners or concentrated lye sold at some hardware stores will typically have a pH from 13 to 14 — a highly alkaline pH.
What is the formula for sodium hydroxide?
Sodium Hydroxide is an ionic compound formed by two ions, Sodium Na+ and Hydroxide OH−. In order for these two polyatomic ions to bond the charges must be equal and opposite. Therefore, it take one +1 sodium ions to balance the one -1 hydroxide ion. This will make the formula for Sodium Hydroxide NaOH.
