Toluidine Blue O

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TT0194-100ML TT0191-10G TT0192-15ML
470302-954EA 24.8 CAD
470302-954 470302-952 470302-956
Toluidine Blue O
Chemicals for Science Education
CAS Number: 92-31-9
Formula: C15H16CIN3S
Density: 1.008 g/mL
Solubility: Water and Alcohol
Synonyms: Basic Blue 17 and Tolonium Chloride, C.I. No 52040
Shelf Life: 36 Months

Note: The chemical specifications for some items on this product page may differ from the specifications listed above. For more information, consult the Safety Data Sheet or contact your Ward's representative.

This product is designed for educational and teaching laboratories, and no certificate of analysis is available.



   
 

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Disposal

This disposal method is published for your convenience. You MUST have checked with your federal, state, and local regulations before using this method and these methods are only applicable for small laboratory sized quantities.

The disposal of this chemical does not need pretreatment and it is not necessary for any chemical reaction to be conducted before it is disposed into a landfill or down the school drain. HOWEVER, there are numerous conditions that should be met which are outlined below before this can be discharged.

If the material is in the solid form, it can be buried in a landfill if:
 a. Local regulations have been confirmed that this material can be disposed of in a landfill.
 b. Chemical is packed into a cardboard box with an appropriate amount of packing material.
 c. Cardboard box is sealed with durable tape.

If the material is in an aqueous form, it can be poured down the drain with excess water if:
 a. Local and State regulations have been checked and you have verified that this material is suitable for this type of disposal
 b. The school drain is connected to the sanitary sewer system.
 c. The quantity that you are disposing of is minimal. A good rule of thumb is less than 250 mL.
 d. Combinations of chemicals are not going down the drain at the same time.
 e. A twenty-fold excess of water is used when washing the chemical down the drain.

A good resource to contact is the local wastewater treatment facility as they can give you guidance and be a resource on drain disposal.

Solution Prep

Add 1 g of toluidine blue O and 0.5 mL of concentrated hydrochloric acid together. A paste will form. Add to the paste 100 mL of DI water.

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