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Methyl Orange
Methyl Orange (Product Code: SCL-894/190) is an acid-base indicator used to show the end point when a strong acid is titrated against sodium carbonate or another weak base in school and college chemistry labs. It is red in acidic solution and yellow in neutral or alkaline solution, and comes as a liquid in a 500 ml analytical reagent bottle with an MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, as a staple of any acid base indicator kit.
Specifications
| Parameter | Detail |
|---|---|
| Product | Methyl orange acid-base indicator |
| Supplied as | Liquid |
| Capacity | 500 ml |
| Grade | Analytical reagent |
| Safety documentation | Supplied with MSDS |
| Indicator colours | Red in acid, yellow in neutral and alkaline solution |
| Shelf life | Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. |
| Product code | SCL-894/190 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Methyl Orange Used For?
In the standard volumetric exercise, a pipetted volume of sodium carbonate solution is placed in a conical flask with two or three drops of methyl orange and titrated with hydrochloric acid from a burette until the yellow colour just turns orange. The same pairing is used to standardise the acid before it goes into a titration kit for school and college students, and to estimate the alkalinity of water samples.
Methyl orange is not suitable when a weak acid such as acetic or oxalic acid is titrated against sodium hydroxide, because its colour changes well before the equivalence point; phenolphthalein is used for those titrations instead. Only a few drops are needed per titration, so transfer a small working quantity to a dropping bottle for the bench and keep the stock bottle closed and out of direct sunlight. The dye stains skin and clothing, so rinse splashes promptly and wipe drips from burette tips and bench surfaces.
Supplier
Methyl Orange is supplied by Jain Scientific Equipments Private Limited, an Ambala, Haryana company trading as ScienceLab. It sources indicators and other titration reagents for schools, colleges and distributors in India and international markets, so they can be quoted with burettes and flasks in one enquiry. You can read about the company on our company profile.
Related Chemistry Lab Products
Reagents and glassware for an acid-base titration using methyl orange:
- Sodium Carbonate — the standard base titrated against acid with this indicator
- Hydrochloric Acid Dilute — the acid most often titrated with methyl orange
- Phenolphthalein Solution — the companion indicator for weak-acid titrations
- Burette — delivers the acid in measured amounts up to the end point
- Conical Flask — holds the base and indicator while the titration is carried out
More indicators and volumetric glassware are listed in the Chemistry Lab category.
Frequently Asked Questions
Who supplies Methyl Orange SCL-894/190?
Methyl Orange (SCL-894/190) is supplied by Jain Scientific Equipments Pvt Ltd, trading as ScienceLab, Ambala, Haryana, India. The indicator is sent as a liquid in a 500 ml analytical reagent bottle, with an MSDS, to schools, colleges and distributors in India and international markets.
What colour change marks the end point with methyl orange?
When acid is added to a base containing Methyl Orange, the solution changes from yellow to orange; take the first permanent orange tint as the end point. If it turns fully red, the end point has been overshot.
When should phenolphthalein be used instead of methyl orange?
Phenolphthalein replaces Methyl Orange when a weak acid, such as acetic or oxalic acid, is titrated against a strong base. Methyl Orange suits titrations of a strong acid against a strong or weak base, such as hydrochloric acid against sodium carbonate.
What concentration is the Methyl Orange indicator?
Methyl Orange is supplied as a liquid in a 500 ml bottle, but the concentration is not stated in this listing. If your practical manual specifies one, check with us through the contact page before ordering.
What is the shelf life of Methyl Orange?
Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. Keep the Methyl Orange stock bottle tightly closed and away from direct sunlight between practicals.
How many drops of methyl orange should be used?
Usually two or three drops of Methyl Orange are enough for each titration. Using the same number every time keeps the end-point colour consistent across a set of readings and makes the results easier to compare.
Request a Quote
For Methyl Orange, code SCL-894/190, request a quotation on our contact page or add it to the enquiry cart together with the sodium carbonate, burettes and conical flasks for your titrations.
Last updated: 24 September 2026
