Agent Name

Methyl blue

CAS Number

28983-56-4

Major Category

Dyes

Synonyms

Acid Blue 93; Acid Leather Blue HER; Brilliant Lake Blue G; C.I. 42780; Cotton Blue; Helvetia Blue; Helvetia Blue I; Helvetia Blue Pure I; Ink Blue; Ink Blue BA; Ink Blue BJT; Ink Blue BJTBN 80; Ink Blue BJTBNA 80; Ink Blue BJTN; Ink Blue G; Ink Blue M; Ink Blue N; Ink Blue Special; Ink Blue WGS; Ink Blue WRS; Methyl Blue (6CI); Methyl Blue (biological stain); Modr Kysela 93 [Czech]; Orient Soluble Blue OBB; Orient Soluble Blue OBC; Pure Soluble Blue I; Silk Blue H; Sky Blue G; Solar Soluble Blue BN; Soluble Blue; Soluble Blue 8B; Special Soluble Blue HT; Water Blue B; Water Blue I Old Type 1240A; Water Blue IN; Benzenesulfonic acid, ((4-(bis(4-((sulfophenyl)amino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)amino)-, disodium salt; C.I. Acid Blue 93, disodium salt (8CI); Disodium ((4-(bis(4-((sulphonatophenyl)amino)phenyl)methylene)cyclohexa-2,5- dien-1-ylidene)amino)benzenesulphonate; [ChemIDplus]

Category

Di- and Triaryl Dyes

Description

Dark-blue powder; [Hawley]

Sources/Uses

Used as an antiseptic and biological stain; [Hawley]

Comments

Occupational asthma confirmed in a hospital worker exposed to EKG ink; [Malo]

Adverse Effects
Asthma

Yes

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: