Is bromothymol blue soluble in water?

Is bromothymol blue soluble in water?

The dye is sparingly soluble in water, almost insoluble in acid solution, whereas it is readily soluble in alcohol (Pharm. A’ord.). Bromothymol blue has been used for estimating the pH of the tear fluid outside the eye or direct in the conjunctival sac.

What is the role of bromothymol blue?

The main uses of bromothymol blue are for testing pH and for testing photosynthesis and respiration. Bromothymol blue has a blue color when in basic conditions (pH over 7), a green color in neutral conditions (pH of 7), and a yellow color in acidic conditions (pH under 7).

What is the use of phenolphthalein?

Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes.

Does phenolphthalein turn pink in water?

Phenolphthalein is a weak acid and is colorless in solution although its ion is pink. Adding hydroxide ions (OH-, as found in bases) will change the phenolphthalein into its ion and turn the solution pink.

What Colour does methyl orange turn in base?

yellow
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.

Is it safe to put mothballs in your house?

Mothballs should not be placed in closets, attics, basements, storage chests or trunks, garment bags or other spaces other than in tightly closed containers as explained above. Gasses from the mothballs escape into the air and can cause respiratory problems.

Why are moth balls bad?

Moth balls contain a toxic chemical, either naphthalene or paradichlorobenzene. Both become a gas when exposed to air and cause that pungent moth ball smell. These gases are irritating to the eyes and lungs and may cause headache, dizziness and nausea. They are both suspected of causing cancer.

What is the pH of pure water?

7
The measurement of alkalinity and pH is needed to determine the corrosivity of the water. The pH of pure water (H20) is 7 at 25 °C, but when exposed to the carbon dioxide in the atmosphere this equilibrium results in a pH of approximately 5.2 because CO2 in the air dissolves in the water and forms carbonic acid.

What are the uses of bromothymol blue?

Uses of Bromothymol blue – C 27 H 28 Br 2 O 5 S 1 In conjunction with phenol red, bromothymol blue was used to monitor the activity of the fungal asparaginase enzyme with… 2 In obstetrics, bromothymol is used to detect premature membrane rupture. Typically, amniotic fluid has a pH > 7.2, so… More

What happens when carbon dioxide reacts with bromothymol blue?

As carbon dioxide increases, the solution turns yellow. Bromothymol blue is a large compound with three benzene rings with two bromines (where the ‘bromo’ in the name comes from), a sulfur attached to three oxygens (a ‘thym’ group), and an alcohol (the -ol suffix).

Does bromothymol dissolve in alcohol?

The alcohol can be used to make it easier to dissolve the bromothymol in water, since bromothymol is highly soluble in alcohol but dissolves with difficulty in water. The bromothymol blue powder can cause skin and eye irritation, as well as acute toxicity if swallowed.

What happens if you swallow bromothymol?

The bromothymol blue powder can cause skin and eye irritation, as well as acute toxicity if swallowed. Small unintentional digestion has seen no issues, but high levels can cause nausea and vomiting, even death. Incidental swallowing can be treated by drinking water.