What is 2 naphthol used for?

Asked By: Samou Cameira | Last Updated: 26th April, 2020
Category: business and finance commodities
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2-Naphthol has several different uses including dyes, pigments, fats, oils, insecticides, pharmaceuticals, perfumes, antiseptics, synthesis of fungicides, and antioxidants for rubber.

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Then, what does 2 naphthol smell like?

noun Chemistry. either of two isomeric hydroxyl derivatives, C10H7OH, of naphthalene (alpha-naphthol or 1-naphthol and beta-naphthol or 2-naphthol), white or yellowish crystals, with a phenolic odor, that darken on exposure to light: used chiefly in dyes, drugs, perfumes, and insecticides.

Also Know, is 2 naphthol acid or base? NaOH is a strong inorganic base and both benzoic acid (a carboxylic acid) and 2-naphthol (a weak acid) are ionized to a salt in the presence of NaOH.

Consequently, what is the Colour of 2 naphthol?

2-Naphthol, or β-naphthol, is a fluorescent colorless (or occasionally yellow) crystalline solid with the formula C10H7OH.

Is 2 naphthol an alcohol?

Both isomers are soluble in simple alcohols, ethers, and chloroform. 2-Naphthol is a widely used intermediate for the production of dyes and other compounds.

CHEBI:10432 - 2-naphthol.

ChEBI Name 2-naphthol
Definition A naphthol carrying a hydroxy group at position 2.

34 Related Question Answers Found

Can 2 naphthol hydrogen bond with water?

Although the host framework formed by cefadroxil is very different, the remaining cavities are quite similar, because the same guest molecule can be accommodated. In all types of structures, β-naphthol is hydrogen bonded to a water molecule.

Is 2 naphthol soluble in water?

The naphthols are insoluble in water. They are phenols, soluble in alkaline solution and substantive to cotton, particularly in the presence of salt.

How do you make 2 naphthol?

  1. Preparation of 2-naphthol solution. To 0.30 grams of 2-naphthol, add 10 mL of 2.0 M NaOH solution and 20 mL of water.
  2. Preparation of 4-nitrobenzenediazonium chloride solution. Place 0.14 grams of 4-nitroaniline into a 30 mL beaker, add 3 mL of water and 1.0 mL of 6.0 M HCl solution.
  3. Preparation of the Para Red Dye.

What is the difference between alpha naphthol and beta naphthol?

Alpha naphthol which is also known as the 1-naphthol is a fluroscent organic chemical substance. It's chemical formula is C10H7OH. It is the isomer of 2-naphthol. Beta naphthol which is also known as the 2-naphthanol is a crystalline organic chemical substance.

Is Alpha naphthol soluble in water?

Naphthols are slightly soluble in water but readily soluble in short alcohols, ethers chlorinated solvents, and caustic alkalis.

What is the formula of beta naphthol?


Is naphthalene soluble in water?

Answer and Explanation: Naphthalene is insoluble in water because it is non-polar. This means that it cannot participate in dipole-dipole interactions or hydrogen bonding

Is 2 naphthol soluble in NaOH?

2-naphthol is slightly soluble in water, but dissolves more readily in a basic solution because it is a weak acid. 20ml of 0.2M naoh is added to 50ml of 0.2M ch3cooh to give 70ml of solution.

What is naphthol dye?

Naphthol dyes are insoluble azo dyestuffs that are produced on the fiber by applying a Naphthol to the fiber and then combining it with a diazotized base or salt at a low temperature to produce an insoluble dye molecule within the fiber.

Why does naphthol react with sodium hydroxide?

this is because Naphthol is a weak acid. for a substance to react with NaOH, it has to be acidic in nature. meaning that should be a proton donor . ethanol is an alcohol and is not acidic in nature while naphthol is acidic in nature, hence it will donate a proton to the base hence the reaction will take place.

What is the melting point of 2 naphthol?

2-Naphthol Properties
Melting point: 120-122 °C(lit.) Boiling point: 285-286 °C(lit.)

Is 2 naphthol soluble in HCl?

Because this was a solubility test, 2-naphthol(brown looking) didn't dissolve in HCl.

What kind of compound is alpha naphthol?

1-Naphthol, or α-naphthol, is a fluorescent organic compound with the formula C10H7OH. It is a white solid. It is an isomer of 2-naphthol differing by the location of the hydroxyl group on the naphthalene ring.

How do you make beta naphthol?

Beta naphthol sodium salt may be prepared by adding the sodium naphthalene sodium salt to a reaction solvent containing water and an organic solvent and hydrolyzing (S130). The hydrolysis may be carried out by dropwise addition of a second basic solution to the naphthalene sodium salt.

Is 2 naphthol a neutral compound?

The pKa's of benzoic acid and 2-naphthol are 4.17 and 9.5, respectively, while naphthalene is a neutral compound. Since benzoic acid is much more acidic than 2-naphthol, the weak base, sodium bicarbonate, will be able to effectively remove benzoic acid's acidic hydrogen.

How do you make Alpha naphthol solution?

Alpha naphthol -5.0g Ethanol absolute -95.0ml Dissolve the alpha-naphthol in the ethanol with constant stiring. Potassium hydroxide -40.0g Creatine -0.3g Distilled water -100.0ml Dissolve the potassium hydroxide in 75ml of distilled water. The solution will become warm. Allow to cool to room temperature.

Is beta naphthol aromatic or aliphatic?

Naphthol can exist as one of two isomers (compounds with the same chemical formula, but different atom connectivity): 1-naphthol or 2-naphthol. The two isomers differ by which carbon in the naphthalene ring the hydroxyl group is bonded to. Another important structural feature of naphthol is that it's aromatic.