What is 4-Bromophenol used for?

4-Bromophenol is used as an intermediate in medicine grade. It is also used as a phenol that is used in Stille reactions. It is used in the intermediate of organic synthesis, flame retardant and pharmaceutical industry.

Is 4-bromophenol acidic or basic?

4-Bromophenol is an extremely weak basic (essentially neutral) compound (based on its pKa).

What is 4-Bromophenol soluble in?


Flash Point >110°C (230°F)
Solubility Information It is insoluble in water. It is soluble in 5%ethanol.
Formula Weight 173.01
Percent Purity 99%
Chemical Name or Material 4-Bromophenol

Does 4-bromophenol dissolve in water?

4-Bromophenol Properties Boiling point: 235-236 °C (lit.) It is insoluble in water. It is soluble in 5%ethanol.

What does biphenyl smell like?

pleasant Biphenyl is insoluble in water, but soluble in typical organic solvents. The biphenyl molecule consists of two connected phenyl rings. … Biphenyl.

Appearance Colorless to pale-yellow crystals
Odor pleasant
Density 1.04 g/cm3
Melting point 69.2 °C (156.6 °F; 342.3 K)

What is bromophenol blue indicator?

Bromophenol blue (3′,3″,5′,5″-tetrabromophenolsulfonphthalein, BPB, albutest) is used as a pH indicator, an electrophoretic color marker, and a dye. It can be prepared by slowly adding excess bromine to a hot solution of phenolsulfonphthalein in glacial acetic acid.

What is bromophenol blue used for?

Bromophenol Blue is a pH indicator, and a dye appearing as a strong blue color. It is often used as a tracking dye during agarose or polyacrylamide gel electrophoresis.

How do you store bromophenol blue?

For long term storage, we suggest that bromophenol blue be stored as supplied at room temperature. It should be stable for at least two years. Bromophenol blue is supplied as a crystalline solid. A stock solution may be made by dissolving the bromophenol blue in the solvent of choice.

What is the pH range of bromophenol blue?

6.0-7.6 pH 9 blue, pH 10 blue-violet, pH 11 to 14 violet. …

Indicator 7.0 Bromophenol blue
pH Range 6.0-7.6
Acid yellow
Alkali blue

What is bromination of phenol?

Bromination of phenol is a substitution reaction. Where the bromine replaces hydrogen present in the benzene ring of phenol. In the water solvent when phenol treated with Br2. gives a polybromo derivative in which all hydrogen atoms at ortho, meta, and para positions with respect to the −OH.

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What is the pKa of P nitrophenol?

3D Structure for HMDB0001232 (4-Nitrophenol)

Property Value Source
pKa (Strongest Acidic) 7.07 ChemAxon
pKa (Strongest Basic) -7.1 ChemAxon
Physiological Charge 0 ChemAxon
Hydrogen Acceptor Count 3 ChemAxon

What is the Iupac name of benzophenone?


IUPAC Name diphenylmethanone
Alternative Names BENZOPHENONE diphenylmethanone Diphenyl ketone
Molecular Formula C13H10O
Molar Mass 182.222 g/mol
InChI InChI=1S/C13H10O/c14-13(11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10H

What is pH phenol?

The pH of a typical dilute solution of phenol in water is likely to be around 5 – 6 (depending on its concentration). That means that a very dilute solution isn’t really acidic enough to turn litmus paper fully red. Litmus paper is blue at pH 8 and red at pH 5.

How many position isomers are possible for bromophenol?

Monobromrophenols have three isomers because there is only one bromine atom that can occupy one of three ring positions on the phenol molecule; 2-bromophenol, for example, is the isomer that has a bromine atom in the ortho position.

How will you perform phenol to p bromophenol?

You have to brominate Phenol in carbon disulfide to obtain 4-Bromophenol. At -30° C, 4-bromophenol is yielded by 97% and at +30° C, the yield is 82%.

What is biphenyl used for?

Biphenyl is used in organic syntheses, heat transfer fluids, dye carriers, food preservatives, as an intermediate for polychlorinated biphenyls, and as a fungistat in the packaging of citrus fruits.

What is the point group of biphenyl?

18 In the gas phase, biphenyl in its lowest-energy conformation belongs to the D 2 point group.

What is the difference between biphenyl and diphenyl?

As nouns the difference between diphenyl and biphenyl is that diphenyl is (organic compound) an alternative name of biphenyl while biphenyl is (organic compound|uncountable) a colourless solid hydrocarbon, c12h10, consisting of two benzene rings linked together.

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What color is BCG?

Bromocresol green Bromocresol green (BCG) is a dye of the triphenylmethane family (triarylmethane dyes). … Bromocresol green.

ChemSpider 6209
ECHA InfoCard 100.000.885
EC Number 200-972-8

What is methyl orange indicator?

Methyl orange is a pH indicator frequently used in titration because of its clear and distinct color variance at different pH values. Methyl orange shows red color in acidic medium and yellow color in basic medium.

Why is bromophenol blue yellow?

Bromophenol Blue is a pH indicator dye that turns yellow under acidic conditions. Bromophenol Blue has a pI below pH 4.0. The concentrated dye solution may have a reddish or greenish cast to the color. … If the pH gradient of the gel includes the pI of the dye, it will turn yellow at its pI.

Is thymol blue a pH indicator?

Thymol blue (thymolsulfonephthalein) is a brownish-green or reddish-brown crystalline powder that is used as a pH indicator. It is insoluble in water but soluble in alcohol and dilute alkali solutions. It transitions from red to yellow at pH 1.2–2.8 and from yellow to blue at pH 8.0–9.6.

How does Bromothymol blue work?

Bromothymol blue (BMB) is an indicator dye that turns yellow in the presence of acid. When carbon dioxide is added to the solution, it creates carbonic acid, lowering the pH of the solution. BMB is blue when the pH is greater than 7.6, green when the pH is between 6-7.6, and yellow when the pH is less than 6.

Is Bromothymol blue the same as bromophenol blue?

These indicators are normally used over a fairly short range of pH values (indicated in the table above). As a pH indicator, bromothymol blue, for example, would be useful between from about pH 6.0 to pH 7.6. …

Indicator Bromophenol blue
Low pH color yellow
Transition pH range 3.0–4.6
High pH color purple
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Is bromophenol blue soluble in water?

3.2. Soluble in water (about 0.4 g/100 mL); more soluble in methyl and ethyl alcohol, and in benzene.

Does bromophenol blue dissolve in water?

Bromophenol Blue, Water Soluble is used as an acid-base indicator and a gel electrophoresis color marker. As an acid-base indicator its useful range lies between pH 3.0 and 4.6. At pH 3.0 it is blue and at pH 4.6 it changes to yellow.

Is bromophenol blue fluorescent?

Sample buffers containing bromophenol blue and certain other dyes will fluoresce and can contribute to increased background fluorescence.

How do I calculate pH?

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = – log [H3O+].

Which solution has highest pH?

Sodium hydroxide, NaOH N a O H , and ammonia, NH3 N H 3 , are both basic solutions and will have pH values greater than 7. However, sodium hydroxide is a strong base, while ammonia is a weak base. Therefore, (c). 0.1 M NaOH N a O H will have the highest pH.

Why is bromocresol green a good indicator?

Bromocresol green is used for this purpose because it exhibits a color change within the pH range of 3.8 to 5.4. Titrations are performed to determine the overall pH and concentration of a solution. An indicator is added to a solution based on whether it is acidic or basic and what pH is being tested for.

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