Product code RXSOL-60-6201-100Category Boiler Chemicals

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Overview

Lab Reagent Resulting colour is deep pink in alkaline medium.

Product description

Phenolphthalein Indicator Powder and solution manufacturer and supplier. Lab Reagent chemicals Resulting colour is deep pink in alkaline medium.

Applications

Product Name ::: Phenolphthalein ( White ) IP

CHEMICAL NAME ::: : 3, 3 Bis (p-Hydroxyphenyl) Phthalide
CAS NO. :::  : 77-09-08
MOLECULAR FORMULA : C20H1404

MOLECULAR WEIGHT : 318.32

Identification : Dissolve in dilute solution of alkali hydroxides & in hot solution of alkali carbonates forming red solution which is decolorized by dilute acids.
 

Where it is used

A strong acid- strong base titration is performed using a phenolphthalein indicator. Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10. It will appear pink in basic solutions and clear in acidic solutions.

Industries and related products

Question: How to make phenolphthalein TEST solution?

Ans: Dissolve 10.0 g of phenolphthalein powder in 750 mL of ethanol and dilute to 1 L with distilled water. Add 0.1 N sodium hydroxide (NaOH) solution dropwise to the first permanent faint pink end point. Color and pH range: colorless 8.3-10.0 red.

 

OTHER PH INDICATOR:

Thymolphthalein RXSOL-60-6605-733 is a phthalein dye used as an acid–base (pH) indicator. Its transition range is around pH 9.3–10.5. Below this pH, it is colorless; above, it is blue. 

 

Phenolphthalein's RXSOL-60-6201-100 common use is as an indicator in acid-base titrations. It also serves as a component of universal indicator, together with methyl red, bromothymol blue, and thymol blue. 
 
Phenolphthalein (pH indicator) indicator range below pH 8.3 above pH 10.0 ::: PINK COLOUR
8.3 ⇌ 10.0
 
 
Methyl red RXSOL-69-4935-270 (2-(N,N-dimethyl-4-aminophenyl) azobenzenecarboxylic acid), also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder.

Methyl red is a pH indicator;
it is red in pH under 4.4, yellow in pH over 6.2
4.4 ⇌ 6.2

Bromothymol blue RXSOL-60-6295-125 also known as bromothymol sulfone phthalein and BTB

 

Bromothymol blue is a pH indicator. 
it is yellow in pH under 6, Blue in pH over 7.6
6 ⇌ 7.6

Dosage

Phenolphthalein is used as an acid or base indicator where, in contact or presence of acid, it will turn colorless and with a base, it will turn into a fuchsia color. It is also a component in universal indicator, a solution consisting of a mixture of pH indicators (usually phenolphthalein, methyl red, bromothymol blue, and thymol blue).

Also known as

Phenolphthalein Indicator 100 Gram Powder Pack

Remarks

Phenolphthalein is basic indicator which remain colorless in acidic and neutral solution and turns pink or magenta in basic solution. If few drops of NaOH is added again to the same solution, the solution become basic and the pink color of the phenolphthalein reappears.

Delivery in Oman

Stocked at our warehouse in Barka, South Al Batinah, and delivered to Muscat, Sohar, Salalah, Duqm, Sur, Nizwa and other locations across Oman.