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Phosphorous acid, 97%, Thermo Scientific Chemicals
Description
Phosphorus acid is used as an intermediate in the preparation of other phosphorus compounds like potassium phosphite, ammonium phosphite and calcium phosphite. It is actively involved in the preparation of phosphites like aminotris(methylenephosphonic acid) (ATMP), 1-hydroxyethane 1,1-diphosphonic acid (HEDP) and 2-phosphonobutane-1,2,4-tricarboxylic Acid (PBTC), which find application in water treatment as a scale or corrosive inhibitor. It is also used in chemical reactions as a reducing agent. Its salt, lead phosphite is used as PVC stabilizer. It is also used as a precursor in the preparation of phosphine and as an intermediate in the preparation of other phosphorus compounds.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
Specifications
Specifications
| Appearance | White crystals |
| Color | White |
| Melting Point | 74°C |
| Boiling Point | 200°C (decomposition) |
| Density | 1.651 g/cm3 at 20°C |
| Odor | Odorless |
| Sensitivity | Air sensitive; Hygroscopic |
| Assay Percent Range | 97% |
| Quantity | 500 g |
| Physical Form | Crystals |
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Safety and Handling
| Hazard Category | H290-H302-H314-H335 |
| Hazard Statement | Keep container in a well ventilated place. Keep away from combustible material. When using do not eat or drink. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). This material and/or its container must be disposed of as hazardous waste. |
| Precautionary Statement | P234-P260-P264b-P270-P271-P280-P303+P361+P353-P304+P340-P305+P351+P338-P310-P330-P331-P363-P390-P501c |
| DOTInformation | Transport Hazard Class: 8; Packing Group: III; Proper Shipping Name: PHOSPHOROUS ACID |
| EINECSNumber | 237-066-7 |
| RTECSNumber | SZ6400000 |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |
RUO – Research Use Only
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