Borax or boric acid [H3BO3] — Ingredient sheet

Borax or boric acid [H3BO3]

Boron compounds: borax is a sodium borate salt and boric acid (H3BO3) is a weak acid of boron.

Characteristics

• Boron is an essential micronutrient involved in building plant cell walls.
• The gap between boron deficiency and excess is narrower than for other nutrients.
• In the EU, boric acid and disodium tetraborate are listed as toxic for reproduction.
• Both dissolve in water; boric acid gives a weakly acidic solution.

Role in the preparation: Supplies the micronutrient boron in mineral preparations, dissolved in water.

Caution: Reproductive toxicants: avoid ingestion and dust, wear gloves and a mask, keep away from children, food and feed, and check local regulations before any use.

Sources: CropNutrition – Boron · Speciation.net – ECHA consultation on boric acid and borates as substances of very high concern (2010)

Documentary information: this is neither a recommendation for use nor a plant-protection or veterinary claim. Check your country's regulations before any use.