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Potassium Hydroxide

Potassium Hydroxide

Also known as Caustic Potash, it is used in making natural liquid soaps. Also is used in many industrial applications, like making bio-diesel. Irritating and caustic to the skin, it is important to use care, wear gloves, safety goggles, and appropriate clothing and take proper cautions when using.

Due to its dangerous goods classification, we only ship Potassium Hydroxide within Canada and by Canpar Ground Courier.  There is a $35.00 Dangerous Goods Charge applied to all orders for shipping of the 55 lb bag size.  Smaller sizes are exempt as they are considered limited quantities by Transportation of Dangerous Goods Regulations. 


$35 Dangerous Chemical Shipping Surcharge will be added.

Potassium Hydroxide

Technical Information 

  • INCI: Potassium Hydroxide
  • CAS #: 1310-58-3
  • Purity: 91.1%
  • pH: 13.5

Technical Documents 

California Prop Statement:

This product is not on the CA Prop 65 List of Toxic Chemicals.

The following statement is made in order to comply with the reporting requirements of the California Safe Drinking Water and Toxic Enforcement Act of 1986. This product is not known to the State of California to cause cancer, birth defects or other reproductive harm. We are conforming to the regulation by reporting the existence, or lack thereof, of ingredients deemed reportable by the above-mentioned regulation via a Safety Data Sheet (SDS), in Section 15 "Regulatory Information." Additionally, ingredients from Natural Food Sources (NFS) are exempt from reporting in accordance with Title 27, § 25501(a).

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