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Contact Supplier| Grade | BPC'63 | NF-X |
|---|---|---|
| Acidity | 1 ml of 0.1 N NaOH to change color | 1 ml of 0.1 N NaOH to neutralize |
| Identification | Should give characteristic reactions of calcium and hypophosphite | Should give characteristic reactions of calcium and hypophosphite |
| Arsenic | Max 4 ppm | Complies to Limit test |
| Barium | No Turbidity or precipitates formed | - |
| Lead | Max. 10 ppm | - |
| Solubility | 1part dissolves slowly in 7 parts of water and solution is Clear and colorless. Insoluble in alcohol | 1.0 gm dissolves slowly in 6.5 ml of water and solution is Clear and colorless. Insoluble in alcohol |
| Phosphate and insoluble matter | Max 0.1% | - |
| Heavy Metals | - | Max. 20 ppm |
| Loss On Drying | - | Not More than 3% @ 105oC for 1 hour |
| Water Insoluble Substances | - | Max. 5 mg per gm of substance |
| Phosphorous Compounds | - | No offensive odour is developed |
| Assay | 98.0 to 101.0 % | Not Less than 98% |