International 164
165
Canada - Canadian General Standards Board Permitted Substances List – 166
167
Hydrogen peroxide is on the Canadian Organic Production Systems Permitted Substances Lists 168 (CAN/CGSB‑32.311-2006). It is listed for use as a fungicide. Sodium carbonate (soda ash) is considered a 169 natural substance in the Canadian system. Sodium carbonate peroxyhydrate is not included in any of the 170 Canadian permitted substance lists.