Establishments primarily engaged in manufacturing phosphatic fertilizer materials, or mixed fertilizers from phosphatic materials produced in the same establishment. Included are phosphoric acid; normal, enriched, and concentrated super-phosphates; ammonium phosphates; nitro-phosphates; and calcium meta-phosphates.
- Ammonium phosphates
- Calcium meta-phosphates
- Defluorinated phosphates
- Diammonium phosphates
- Fertilizers, mixed: made in plants producing phosphatic fertilizer
- Phosphoric acid
- Plant foods, mixed: made in plants producing phosphatic fertilizer
- Super-phosphates, ammoniated and not ammoniated