| 1 | Appearance | Yellowish-white crystalline powder. | White to yellowish-white, white or pale yellowish-brown, crystalline or amorphous powder or fibrous powder. | USP-NF/Ph.Eur/BP |
| 2 | Solubility | Complies | It dissolves in 10% KOH. | In-house |
| 3 | Identification (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the corresponding standard. | USP-NF |
| 4 | Identification (By chemical test 1) | Complies | A voluminous, gelatinous precipitate should form. | USP-NF/Ph.Eur/BP |
| 5 | Identification (By chemical test 2) | Complies | A heavy, gelatinous precipitate should form. | USP-NF |
| 6 | Identification (By chemical test 3) | Complies | No Voluminous gelatinous mass should form. | Ph.Eur/BP |
| 7 | Identification (By chemical test 4) | Complies | The isopropyl ether extract exhibits a deeper purplish hue than that from a blank. | USP-NF/Ph.Eur/BP |
| 8 | Arsenic | 0.42 ppm | NMT 3ppm | USP-NF/In-house |
| 9 | Lead | 0.46 ppm | NMT 10ppm | USP-NF/In-house |
| 10 | chloride | Less than 1.0% | NMT 1.0% | Ph.Eur/BP |
| 11 | pH | 1.9 | 1.5 - 3.5 | USP-NF |
| 12 | Loss on drying (105 °C, 4 hrs) | 13.2% | NMT 15.0% | USP-NF/Ph.Eur/BP |
| 13 | Sulfated ash | 5.20% | NMT 8.0% | Ph.Eur/BP |
| 14 | Total Ash | 2.60% | NMT 4.0% | USP-NF |
| 15 | Acid value | 296 | NLT 230 on the dried basis | USP-NF |
| 16 | Assay (on dried basis) | 21.8% | 19.0 - 25.0% | Ph.Eur/BP |
| 17 | Total aerobic microbial count | Less than 200 CFU/gm | NMT 200 CFU/gm | In-house |
| 18 | Salmonella | Absent/10gm | should be absent/10gm | In-house |
| 19 | Escherichia coli | Absent/gm | should be absent/gm | In-house |
| 20 | Particle Size Distribution | 100% | 99 - 100% (Thru 120 mesh) | In-house |