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Potassium Nitrate
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Potassium Nitrate
Bottles

Potassium Nitrate
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PP0650-500G PP0650-CAP PP0662-CONC PP0650-2.5KG PP0667-500ML PP0655-100GR PP0655-500GR PP0655-2.5KGR PP0650-100G
470302-190EA 13.45 USD
470302-190 470302-204 470302-194 470302-192 470302-198 470302-196 470302-202 470302-200 470302-188
Potassium Nitrate
Chemicals for Science Education
CAS Number: 7757-79-1
Formula: KNO3
Density: 2.1 g/mL
Boiling and Freezing Point: 400°C, 333°C
Solubility: Water, Glycerin, and Alcohol
Synonyms: Potash Nitrate, Saltpeter
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 oxidizer and irritant.
   
 

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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

To prepare a solution, determine the formula weight of the material, the concentration (Molarity) of the solution, and the amount of solution desired in Liters. Once this information has been obtained, use the following formula:
(Formula Weight) x (Concentration) x (Desired Volume) = Number of grams in desired volume of liquid

For a 1 M, 1 L solution:
(Formula Weight) x (1 mol/L) x (1 L) = x g added to 1-L volumetric flask. Dilute to a final volume of 1 L with DI Water.

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