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7758-16-9
bosschem
7758-16-9
Disodium pytophosphate Basic information | |
Product Name: | Disodium pytophosphate |
CAS: | 7758-16-9 |
MF: | H2Na2O7P2 |
MW: | 221.94 |
EINECS: | 231-835-0 |
Product Categories: | Food Additives;Inorganics |
Mol File: | 7758-16-9.mol |
Disodium pytophosphate Chemical Properties | |
Melting point | decomposes 220℃ [MER06] |
density | (hexahydrate) 1.86 |
storage temp. | −70°C |
solubility | H2O: 0.1 M at 20 °C, clear, colorless |
form | white powder |
PH | 3.5-4.5 (20℃, 0.1M in H2O, freshly prepared) |
Water Solubility | Fully miscible in water. Insoluble in alcohol and ammonia. |
λmax | λ: 260 nm Amax: 0.11 |
λ: 280 nm Amax: 0.09 | |
Merck | 138643 |
Stability: | Stable. |
Test Items | Specification |
Appearance | White powder or grains |
Assay (Na2H2P2O7),% | 95.0 min |
Water insoluble,% | 1.0 max |
PH value (1% solution) | 3.7-4.4 |
Loss on drying,% | 0.5 max |
Arsenic, ppm | 2 max |
Fluoride, ppm | 30 max |
Heavy metal | 10 max |
Pb, ppm | 4 max |
Cd, ppm | 1 max |
Hg, ppm | 1 max |
Bulk density, g/l | 800-1150 |
Ror | 26-30 |
Disodium pytophosphate Basic information | |
Product Name: | Disodium pytophosphate |
CAS: | 7758-16-9 |
MF: | H2Na2O7P2 |
MW: | 221.94 |
EINECS: | 231-835-0 |
Product Categories: | Food Additives;Inorganics |
Mol File: | 7758-16-9.mol |
Disodium pytophosphate Chemical Properties | |
Melting point | decomposes 220℃ [MER06] |
density | (hexahydrate) 1.86 |
storage temp. | −70°C |
solubility | H2O: 0.1 M at 20 °C, clear, colorless |
form | white powder |
PH | 3.5-4.5 (20℃, 0.1M in H2O, freshly prepared) |
Water Solubility | Fully miscible in water. Insoluble in alcohol and ammonia. |
λmax | λ: 260 nm Amax: 0.11 |
λ: 280 nm Amax: 0.09 | |
Merck | 138643 |
Stability: | Stable. |
Test Items | Specification |
Appearance | White powder or grains |
Assay (Na2H2P2O7),% | 95.0 min |
Water insoluble,% | 1.0 max |
PH value (1% solution) | 3.7-4.4 |
Loss on drying,% | 0.5 max |
Arsenic, ppm | 2 max |
Fluoride, ppm | 30 max |
Heavy metal | 10 max |
Pb, ppm | 4 max |
Cd, ppm | 1 max |
Hg, ppm | 1 max |
Bulk density, g/l | 800-1150 |
Ror | 26-30 |