Phenolphthalein 250 ml Manufacturer,Supplier and Exporter in India

Phenolphthalein 250 ml (Product Code: SCI-511/220) is an analytical reagent grade acid-base indicator used to mark the end point of titrations and to detect alkalis in school, college and university chemistry laboratories. The 250 ml capacity suits departments that run volumetric analysis practicals every week, and each pack is supplied with its MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.

Specifications

What Is Phenolphthalein Used For?

In an acid-base titration, a few drops of phenolphthalein are added to the acid in a conical flask. The mixture stays colourless while acid remains and turns a faint, lasting pink as soon as the alkali from the burette is in slight excess. That sharp colourless-to-pink change makes it the usual indicator when sodium hydroxide is titrated against hydrochloric, sulphuric, oxalic or acetic acid, which is why it appears on almost every chemistry lab equipment list in India for volumetric work.

Outside titration, phenolphthalein lets students see that limewater, ammonia solution and soap solution are alkaline, and it is one half of the ferroxyl indicator used in rusting experiments. Swirl the flask constantly near the end point and add alkali drop by drop so the first permanent pink is not overshot. Indicator solutions are often made up in alcohol, so keep the bottle closed and away from flames, wear goggles, and follow the MSDS.

Supplier

Jain Scientific Equipments Private Limited, which trades as ScienceLab, supplies Phenolphthalein 250 ml from Ambala, Haryana, alongside the burettes, conical flasks and alkalis used in the same titration. Laboratories can place indicator, glassware and reagents in one enquiry instead of dealing with several vendors. Company background is on the ScienceLab profile page.

Related Laboratory Equipment

A titration bench that uses Phenolphthalein 250 ml usually also needs:

• Burette, Class-B, with PTFE Key Stopcock — delivers the alkali drop by drop up to the pink end point.
• Conical Flask — holds the acid and indicator and is easy to swirl during titration.
• Sodium Hydroxide 500 g — the alkali most often titrated with this indicator.
• Oxalic Acid — a primary standard for standardising the alkali before unknowns are titrated.
• Phenolphthalein Solution — a separately listed indicator solution to compare before ordering.

More reagents and glassware are listed in the Laboratory Equipment category.

Frequently Asked Questions

What colour change does Phenolphthalein 250 ml show?
Phenolphthalein 250 ml stays colourless in acidic and neutral solutions and turns pink to magenta in alkaline solutions. In a titration, the first faint pink that persists after swirling marks the end point, the moment the added alkali is in slight excess over the acid.

Is phenolphthalein suitable for every titration?
No. Phenolphthalein suits titrations in which the alkali is strong, such as sodium hydroxide against hydrochloric, sulphuric, oxalic or acetic acid. When a weak base such as ammonia solution is titrated with a strong acid, methyl orange or methyl red gives a clearer end point.

What exactly is supplied under this listing?
Phenolphthalein 250 ml (SCI-511/220) is listed as an analytical reagent with a 250 ml capacity and an MSDS. The concentration and solvent are not stated, so ask us to confirm them with your quotation if your practical manual specifies a particular indicator strength.

What is the shelf life of Phenolphthalein 250 ml?
Shelf life depends on the chemical, its grade and storage conditions, so no fixed period is quoted for Phenolphthalein 250 ml. Ask us for the expiry date of the batch you are quoted, and keep the bottle tightly closed, away from heat and direct sunlight.

Who supplies Phenolphthalein 250 ml?
Phenolphthalein 250 ml is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India, to schools, colleges, dealers and testing laboratories in India and international markets. It can be quoted together with burettes, flasks and other titration reagents in a single enquiry.

What should a quotation request for this indicator include?
For Phenolphthalein 250 ml, state the number of bottles, the delivery address and any preferred indicator strength. Mention whether you also need burettes, conical flasks or sodium hydroxide, and include tender or vendor-registration forms if your institution requires them.

Request a Quote

For a Phenolphthalein 250 ml quotation, tell us how many bottles you need and where they should go through our contact page, or add the item to the enquiry cart together with the glassware for your titration benches. We will reply with pricing and dispatch details.

Last updated: 24 September 2026