Other Grade: BP
| Description | A fine white, light, amorphous powder, odorless |
| Identification (Al) | Positive |
| Chloride | Not more than 1.25% |
| Arsenic | Not more than 5ppm |
| Heavy Metals | Not more than 60ppm |
| Assay as Al(OH)3 | Not less than 47% and not more then 60% |
| Acid neutralizing capacity | Not more than 35 ml of 0.1 NaOH reqd. |
| PH of 4% w/v aq.solution | Not more than 10 |
| Solubility | Insoluble in water and in 95% ethanol |