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Methyl Orange

Contents

Key Stage 3

Meaning

Methyl Orange is an indicator dye that changes colour depending on the pH of a solution.

About Methyl Orange

Methyl Orange is orange when it is in a neutral solution.
Methyl Orange changes colour quickly between pH 4 and 3 to turn red at pH 3 and below.
Methyl Orange pH scale.

References

AQA

Methyl orange, page 150, GCSE Chemistry, CGP, AQA

Edexcel

Methyl orange, page 43, GCSE Chemistry; The Revision Guide, CGP, Edexcel
Methyl orange, pages 119, 186, 205, GCSE Chemistry, CGP, Edexcel