Methyl Orange
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Product Code : SCL-LC-12289
Methyl Orange (SKU SCL-LC-12289) is an azo-dye acid-base indicator that is red in acidic conditions and changes toward yellow-orange above a transition range of about pH 3.1–4.4. It can be used to detect titration endpoints, demonstrate pH ranges and compare indicators in school and college chemistry. Science Lab Supplies in Ambala, India, takes enquiries for it from schools, colleges, training institutes, tender contractors and distributors stocking school chemistry lab equipment in India.
Specifications
Methyl orange’s formula, colour behaviour, form options and storage needs are set out row by row. In short, the product is methyl orange sodium salt, C14H14N3NaO3S, CAS 547-58-0, which may arrive as a solid indicator or a ready solution; the label on each batch confirms form, strength and any solvent, and the quotation fixes grade and pack size.
| Specification | Value |
|---|---|
| SKU | SCL-LC-12289 |
| Indicator | Methyl orange (sodium salt) |
| Formula | C14H14N3NaO3S |
| CAS number | 547-58-0 |
| Indicator type | Azo dye acid-base indicator |
| Transition range | About pH 3.1–4.4, confirmed for the formulation |
| Colour in acid | Red |
| Colour above the range | Yellow-orange |
| Form | Powder, crystals or ready solution, confirmed on the label |
| PPE | Lab coat, gloves and eye protection |
| Solution preparation | Solid dissolved only by trained personnel to a written procedure |
| Dosing | Only the drops specified in the titration method |
| Storage | Tightly closed; cool, dry, ventilated; away from unnecessary light and moisture |
| Waste | Institutional chemical-waste rules |
| Not for | Food, cosmetic, medical, textile-dyeing or consumer use |
| Units per order | 1 x Methyl Orange pack or bottle |
| Documents | Safety Data Sheet, batch label, shelf-life detail, transport documents |
| Grade, concentration, pack size | Confirmed on the quotation |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Methyl Orange
Because its colour changes in the acidic region, the indicator suits titrations of strong acids against weak bases such as carbonates. The base sample can be measured with a pipette and a Pipette Filler Bulb into a Borosilicate Conical Flask, a few drops added, and the endpoint judged in good light.
- NCERT Class 10 science, Chapter 2: methyl orange as a synthetic acid-base indicator.
- CBSE Class 11 practicals: titrating sodium carbonate against hydrochloric acid with methyl orange.
- B.Sc. volumetric analysis: strong acid versus weak base titrations.
- Indicator comparison with phenolphthalein and litmus in introductory lessons.
Standard Scope of Supply
The supply is one pack or bottle of Methyl Orange with a batch label, the Safety Data Sheet, shelf-life detail and transport documents. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. The quotation states form and pack size.
Packing, MOQ and Lead Time
Request pricing for a single container or a full laboratory stock; the quotation will set out packing, delivery time and price for that quantity. Tell us whether you need solid or solution form, and add other indicators or glassware to the same enquiry.
Through its Importer-Exporter Code as a registered exporter, Science Lab Supplies can ship to buyers in Rwanda, South Africa, Qatar, Sri Lanka, Vietnam and Malaysia. Specify powder or ready solution in a message on the contact page, line up indicators side by side in the enquiry cart, or check the lab tender page for bid paperwork.
Frequently Asked Questions
What colour does Methyl Orange show in acid?
It is red in acidic conditions and changes toward yellow-orange above its transition range of about pH 3.1–4.4. Confirm the exact range for the supplied formulation before relying on it.
Is it supplied as powder or solution?
Either form may be supplied, and the quotation and label state which one you receive. If you need a ready-to-use solution, say so when you ask for a quote.
Who supplies the Methyl Orange?
Science Lab Supplies prepares the quotation and dispatches the indicator from Ambala, India, with a batch label and Safety Data Sheet, alone or with other titration reagents.
Is Methyl Orange suitable for school labs?
Yes, for supervised school and college titrations. Avoid ingesting it or breathing dust or vapour, and do not use it as a textile dye or for any medical purpose.
Related Indicators, pH Testers and Burette Ware
Indicator choice depends on the acid and base in the flask, so a lab can keep more than one indicator alongside a weak base, litmus paper and a pH meter for cross-checks, plus the burette and clamp for the titration. All of these can go on a single quotation.
- Phenolphthalein Solution Indicator — pink in alkaline conditions, CAS 77-09-8.
- Red Litmus Solution — red-to-blue indicator solution for identifying alkaline samples.
- Ammonium Hydroxide — aqueous ammonia, a weak alkali.
- Blue Litmus Paper — acids turn it red; bases and neutral samples leave it blue.
- pH Meter — digital pen-style meter, pH 0–14 at 0.1 pH resolution.
- Burette for Acids — 50 ml glass with a glass faucet and 0.1 ml divisions.
- Burette Clamp Chemistry Lab — spring-loaded jaws for a retort stand.
Browse the full Lab Chemicals range, the Chemistry Lab range, or all school lab equipment.
Last updated: 22 October 2026
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