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Methyl Orange pH Indicator Solution – 50 ml

Chemical formula: aqueous solution of Methyl Orange (4-dimethylaminoazobenzene-4′-sulfonicacid sodium salt)

Synonyms: pH indicator solution, acid-base titration indicator

Amount: 50 ml

Appearance and odour: dark red-amber liquid without appreciable odour.

Grade: reagent

Packaging: professional white HDPE 50 ml dropper bottle with screw-on conical protective cap. Labelled. For first use, cut a few mm off the top end of the dropper to render it operational. Replace protective cap for safe keeping.

Description and uses:

The colour of a methyl orange solution depends on the pH of the solution. Below pH = 3.1 it is a clear red, above 4.4 a clear yellow.

This makes it very suitable as an acid-base titration indicator, particularly for the titration of weak bases (ammonia and carbonates/bicarbonates for instance) with strong acids (HCl or H2SO4 typically). Add a few drops of the indicator solution to the sample of the solution to be titrated and titrate until the clear endpoint (transition from red to yellow) occurs.

Dispatch: depending on time of receipt of your order, your item will be dispatched either same day or next day at the latest.

Feedback & Complaints: not happy about something? Let us know and we’ll bend over backwards to overcome the problem.

Returns: returns are accepted on condition the item is returned to us, return cost paid by the buyer. For broken or demonstrably faulty items either replacement or refund will be issued.

CAS: 547-58-0 (pure methyl orange)

Price: £4.99