Crystal Violet

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CC0461-500ML CC0461-100ML CC0450-25G CC0455-100ML CC0450-10G CC0456-500ML
470300-938EA 55.95 USD
470300-938 470300-948 470300-946 470300-944 470300-942 470300-940
Crystal Violet
Chemicals for Science Education
CAS Number: 548-62-9
Formula: C25H30CIN3
Freezing Point: Decomposes
Solubility: Alcohol and Water
Synonyms: Gentian Violet, Basic Violet 3, C.I. No. 42555
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.

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

Caution: This product is flammable and toxic.




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

Use a 0.02% aqueous solution as a pH indicator. Add 0.02 g of crystal violet in 75 ml of DI water. Dilute to a final volume of 100 ml with DI water. For use as a stain for bacteria, Add 2 g of crystal violet to 20 ml of 95% ethyl alcohol. Add 0.8 g of ammonium oxalate monohydrate