Phosphoric acid chromium (III) salt
Chromic Phosphate
CAS: 7789-04-0
Molecular Formula: CrO4P
Phosphoric acid chromium (III) salt - Names and Identifiers
| Name | Chromic Phosphate |
| Synonyms | arnaudon'sgreen Chromic phosphate Chromic Phosphate CHROMIC PHOSPHATE Chromium phosphate CHROMIUM PHOSPHATE Chromium(Ⅲ) Phosphate Chromium monophosphate CHROMIUM(III) PHOSPHATE CHRONIUM(III) PHOSPHATE trichromous diphosphate Chromium orthophosphate Chromium(III) orthophosphate Chromium(Ⅲ) phosphate hexahydrate Phosphoric acid chromium (III) salt Chromic phosphate [Chromium and chromium compounds] |
| CAS | 7789-04-0 |
| EINECS | 232-141-0 |
| InChI | InChI=1/3Cr.2H3O4P/c;;;2*1-5(2,3)4/h;;;2*(H3,1,2,3,4)/q3*+2;;/p-6 |
Phosphoric acid chromium (III) salt - Physico-chemical Properties
| Molecular Formula | CrO4P |
| Molar Mass | 146.97 |
| Density | 2.12g/mLat 25°C(lit.) |
| Melting Point | 120-140°C (dec.)(lit.) |
| Water Solubility | insoluble H2O; soluble acids [MER06] |
| Appearance | blue orthorhombic crystals |
| Storage Condition | Room Temprature |
| Stability | Stability |
| Physical and Chemical Properties | (1) CrPO4 = 146.9, blue-green powder. (2) CrPO4 · 2H2O = 183.00, purple crystal. The relative density of 2.42 (32.5/4 deg C). ③ CrPO4 · 6H2O = 255.06, melting point 100 ℃. The three are insoluble in water, soluble in acid and alkali solution. prepared by the interaction of chromium chloride and sodium phosphate solution. Used as coatings, paint pigments and ceramic colored glaze. |
| Use | For the dye and ceramic industry |
Phosphoric acid chromium (III) salt - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | 34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 1759 8/PG 1 |
| WGK Germany | 3 |
Phosphoric acid chromium (III) salt - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| preparation method | chromium phosphate is formed by the reaction of phosphoric acid and chromic anhydride (CrO3), by adding formaldehyde, hydrogen peroxide and other reducing agents, crO3 was reduced to Cr2O3 and subsequently combined with phosphoric acid to amorphous P2O5-Cr2O3 during heating. This inorganic polymer skeleton has high strength and elastic modulus, but due to the toxicity of Cr6, its application is relatively less. |
| Application | used in dyestuff and Ceramic Industry |
| category | toxic substances |
| flammability hazard characteristics | non-combustible; Toxic chromium and phosphorus oxide fumes generated from fire scene; |
| storage and transportation characteristics | The warehouse is low temperature, ventilated and dry, and stored separately from food raw materials |
| extinguishing agent | water, carbon dioxide, dry powder, sand |
| Occupational Standard | TWA 0.5 mg (chromium)/m3 |
Last Update：2024-04-10 22:29:15
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