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                          | Product Name | Phosphorous acid |  
                          | CAS RN | 13598-36-2 |  
                          | EINECS Number | 237-066-7 |  
                          | Molecular Formula | H3PO3 |  
                          | Molecular Weight | 88.0434 |  
                          | Physical and chemical property | Colorless crystals |  
                          | Use | Used as a reducing agent, nylon whitening agent, also used as Phosphorous acid salt, raw materials, pesticide intermediates.
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