| CAS | 127-08-2 | INS | 261(E261?i) | ||
| Molecular??formula | C2H3KO | ||||
| Properties |
Colorless?or?white?crystalline?powder.Slightly?acid?taste, easy?deliquescence. |
||||
|
Quality Specifications |
?Standard Item |
BP2012 | ACS?Grade | USP35 | EP7.0 |
| Content | ≥99.0% | ≥99.0%? |
99.0%?~? ?100.5%? ?(Dry?basis)? |
99.0%?~? ?101.0%? ?(Dry?basis)? |
|
| pH?test |
7.5?-?9.0?(1 ??in?20?soln) |
6.5-9.0 (5%? ?solution at?25.0℃) |
7.5?~ 8.5?(5% Solution) |
7.5-9.0 | |
|
Loss on drying |
≤8.0%??? ?(150℃,?2?h) |
----------- | ≤?1.0% | ≤?3% | |
|
Heavy Metals? |
≤?2?mg/kg | ≤5ppm | ≤?0.002% | ≤4ppm | |
| Sodium? | ----------- | ≤0.03% | ----------- | ≤0.5% | |
|
Insoluble matter? |
----------- | ≤0.005% | ----------- | ----------- | |
|
Chloride (Cl) |
----------- | ≤0.003% | ----------- | ≤200ppm | |
|
Phosphate (PO4) |
----------- | ≤0.001% | ----------- | ----------- | |
|
Sulfate (SO4) |
----------- | ≤0.002% | ----------- | ≤200ppm | |
| Iron(Fe) | ----------- | ≤5ppm | ----------- | ≤20ppm | |
| Calcium(Ca) | ----------- | ≤0.005%? | ----------- | ----------- | |
|
Magnesium (Mg) |
----------- | ≤0.002% | ----------- | ----------- | |
|
Reducing substances |
----------- | ----------- | ----------- | passed?test | |
|
Aluminum salts |
----------- | ----------- | ----------- | ≤1ppm | |