Material Safety Data Sheet
Toluidine Blue O
Section 1 - Chemical Product and Company Identification
MSDS Name: Toluidine Blue O
Catalog Numbers: S71363, BP107-10, T161-25
Synonyms: 3-Amino-7-(Dimethylamino)-2-Methylphenothiazin-5-ium Chloride; CI Basic Blue 17;
1 Reagent Lane
Fair Lawn, NJ 07410
For information, call: 201-796-7100
Emergency Number: 201-796-7100
For CHEMTREC assistance, call: 800-424-9300
For International CHEMTREC assistance, call: 703-527-3887
Section 2 - Composition, Information on Ingredients
Toluidine Blue O
Section 3 - Hazards Identification
Appearance: dark green solid.
Caution! May cause irritation. The toxicological properties of this material have not been fully investigated.
Target Organs: None.
Potential Health Effects
Eye: May cause eye irritation and possible damage. This product contains a cationic dye. Similar dyes
have caused permanent injury to the cornea and conjunctiva in documented exposure cases with human
or rabbit eyes.
Skin: May cause skin irritation.
Ingestion: The toxicological properties of this substance have not been fully investigated.
Inhalation: The toxicological properties of this substance have not been fully investigated.
Chronic: No information found.
Section 4 - First Aid Measures
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper
and lower eyelids. Get medical aid.
Skin: Immediately flush skin with plenty of water for at least 15 minutes while removing
contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Ingestion: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by
mouth to an unconscious person. Get medical aid immediately.