Agent Name

Litmus

CAS Number

1393-92-6

Formula

Unspecified

Major Category

Dyes

Synonyms

Lackmus; Tornasol; Tournesol; [ChemIDplus] Lacmus; Turnsole; Lacca musica; Lacca coerulea; [Merck Index]

Category

Other Dyes

Description

Blue solid; [Merck Index] Dark blue odorless solid; [Acros Organics MSDS]

Sources/Uses

Found in a variety of lichen species; Used as a pH indicator and in microscopy; Has been used to color beverages; [Merck Index] "The litmus mixture has the CAS number 1393-92-6 and contains 10 to 15 different dyes. . . . Acid-base indicators on litmus owe their properties to a 7-hydroxyphenoxazone chromophore." [Wikipedia]

Links to Other NLM Databases
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Chemical Information

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