如东华云化工有限公司
Rudong Huayun Chemical Co., Ltd.
Main phosphorous acid and phosphite series
The main product is phosphorous acid
如东华云化工有限公司
Rudong Huayun Chemical Co., Ltd.
Main phosphorous acid and phosphite series
The main product is phosphorous acid
PRODUCTS
Huayun Chemical
Diammonium phosphonate
CAS No.: 51503-61-8
Molecular formula: （NH4）2HPO3 ·H20
Structure: 
Quality Index:
| Content % | ≥98 |
| （P2O5）% | ≥50 |
| （N）% | ≥19 |
| Water insoluble matter % | ≤0.1 |
| PH | 7.5-8 |
| Appearance | White or colorless crystal |
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